1202 lines
48 KiB
Python
Executable file
1202 lines
48 KiB
Python
Executable file
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import os
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import sys
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sys.path.append('/usr/scripts/gestion')
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sys.path.append('/usr/scripts/lc_ldap')
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from config import NETs, blacklist_sanctions, blacklist_sanctions_soft, blacklist_bridage_upload, mac_komaz, mac_titanic, adm_users, accueil_route
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import pwd
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import config.firewall
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import lc_ldap
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import socket
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from ipset import IpsetError, Ipset
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from iptools import AddrInNet, NetSubnets, IpSubnet, NetInNets
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import subprocess
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import syslog
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from affich_tools import anim, OK, cprint
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squeeze = os.uname()[2] < '3'
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#: Nom de la machine exécutant le script
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hostname = socket.gethostname()
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#: Chaines par défaut d'iptables
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default_chains = ['INPUT', 'OUTPUT', 'FORWARD', 'PREROUTING', 'POSTROUTING']
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#: Tables d'iptables
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tables = ['raw', 'mangle', 'filter', 'nat']
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#: Association des interfaces de ``hostname``
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dev = hostname in config.firewall.dev.keys() and config.firewall.dev[hostname] or {}
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def pretty_print(table, chain):
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"""Affiche quelle chaine est en train d'être construite dans quelle table de NetFilter"""
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anim('\t%s dans %s' % (chain, table))
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class TcError(Exception):
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""" Gestion des erreurs de tc """
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def __init__(self,cmd,err_code,output):
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self.cmd=cmd
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self.err_code=err_code
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self.output=output
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syslog.syslog(syslog.LOG_ERR,"%s : status %s,%s" % (cmd,err_code,output))
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def __str__(self):
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return "%s\n status : %s\n %s" % (self.cmd,self.err_code,self.output)
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def tc(cmd, block=True):
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""" Interface de tc """
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params = ['/sbin/tc']
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params.extend(cmd.split())
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p = subprocess.Popen(params , stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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if block:
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status = p.wait()
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stdoutdata, stderrdata = p.communicate()
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if status:
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raise TcError(' '.join(params), status, stdoutdata + stderrdata)
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return stdoutdata + stderrdata
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class firewall_base(object) :
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"""Classe de base du pare-feu implémentant l'association mac-ip (pour les machines filaires) et les blacklists hard"""
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def machines(self):
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"""Renvois la liste de toutes les machines"""
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if self._machines:
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return self._machines
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self._machines, self._adherents = conn.allMachinesAdherents()
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return self._machines
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def adherents(self):
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"""Renvois la liste de tous les adhérents"""
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if self._adherents:
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return self._adherents
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self._machines, self._adherents = conn.allMachinesAdherents()
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self._adherents = [ adh for adh in self._adherents if adh.paiement_ok ]
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return self._adherents
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def blacklisted_machines(self):
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"""Renvois la liste de toutes les machines ayant une blackliste actives"""
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if self._blacklisted_machines:
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return self._blacklisted_machines
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if self._machines:
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self._blacklisted_machines = [ machine for machine in self._machines if machine.blacklist_actif() ]
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return self._blacklisted_machines
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blacklisted = [ machine for machine in conn.search("blacklist=*",sizelimit=4096) if machine.blacklist_actif() ]
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self._blacklisted_machines = set()
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for item in blacklisted:
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if isinstance(item, lc_ldap.proprio):
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self._blacklisted_machines = self._blacklisted_machines.union(item.machines())
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elif isinstance(item, lc_ldap.machine):
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self._blacklisted_machines.add(item)
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else:
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print >> sys.stderr, 'Objet %s inconnu blacklisté' % a.__class__.__name__
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return self._blacklisted_machines
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def blacklisted_adherents(self):
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"""Renvois la liste de tous les adhérents ayant une blackliste active"""
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if self._blacklisted_adherents:
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return self._blacklisted_adherents
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self._blacklisted_adherents = filter(lambda adh: adh.blacklist_actif(), self.adherents())
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return self._blacklisted_adherents
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def add(self, table, chain, rule):
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"""Ajoute la règle ``rule`` à la chaine ``chain`` dans la table ``table``"""
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if not chain in self.chain_list[table]:
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self.chain_list[table].append(chain)
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self.rules_list[table][chain]=[]
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self.rules_list[table][chain].append(rule)
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def delete(self, table=None, chain=None):
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"""Supprime ``chain`` de ``table`` si fournis, sinon supprime ``table``, sinon toutes les tables"""
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if not table:
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for table in tables:
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self.delete(table, chain)
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if not chain:
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for chain in self.chain_list[table]:
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self.delete(table, chain)
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if not chain in self.chain_list[table]:
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return
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if not chain in default_chains:
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self.chain_list[table].remove(chain)
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del(self.rules_list[table][chain])
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else:
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self.rules_list[table][chain]=[]
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def flush(self, table=None, chain=None):
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"""Vide ``chain`` dans ``table`` si fournis, sinon vide toutes
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les chaines de ``table``, sinon vide toutes les chaines de toutes les tables"""
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if not table:
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for table in tables:
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self.flush(table, chain)
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if not chain:
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for chain in self.chain_list[table]:
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self.flush(table, chain)
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if not chain in self.chain_list[table]:
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self.chain_list[table].append(chain)
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self.rules_list[table][chain]=[]
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def restore(self, table=None, chains=[], noflush=False):
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"""Restores les règles du pare-feu dans le noyau en appelant ``iptables-restore``.
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Si ``table`` est fournis, on ne restore que table.
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Si ``noflush`` n'est pas à ``True`` tout le contenu précédent est supprimé"""
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str=self.format(chains)
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f=open('/tmp/ipt_rules', 'w')
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f.write(str)
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f.close()
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params = ['/sbin/iptables-restore']
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if noflush:
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params.append('--noflush')
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if table and table in ['raw', 'mangle', 'filter', 'nat']:
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params.append('--table')
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params.append(table)
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p = subprocess.Popen(params , stdin=subprocess.PIPE)
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p.communicate(input=str)
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def apply(self, table, chain):
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"""Applique les règles de ``chain`` dans ``table``"""
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if not chain in self.chain_list[table]:
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return
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self.restore(table, [chain], noflush=True)
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self.delete(table, chain)
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def format(self, chains=[]):
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"""Transforme la structure interne des règles du pare-feu en celle comprise par ``iptables-restore``"""
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str = ''
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for table in self.chain_list.keys():
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str += '*%s\n' % table
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for chain in self.chain_list[table]:
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if not chains or chain in chains or chain in default_chains:
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str += ':%s %s [0:0]\n' % (chain, chain in default_chains and 'ACCEPT' or '-')
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for chain in self.chain_list[table]:
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if not chains or chain in chains :
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for rule in self.rules_list[table][chain]:
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str += '-A %s %s\n' % (chain, rule)
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str += 'COMMIT\n'
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return str
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def __init__(self):
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global conn
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#initialisation des structures communes : récupération des ipset
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if os.getuid() != 0:
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from affich_tools import coul
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sys.stderr.write(coul("Il faut être root pour utiliser le firewall\n", 'gras'))
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sys.exit(1)
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# Connection à la base ldap
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conn = lc_ldap.lc_ldap_admin()
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self.reloadable = {
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'blacklist_hard' : self.blacklist_hard,
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'test_mac_ip' : self.test_mac_ip,
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}
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self.use_ipset = [self.blacklist_hard, self.test_mac_ip]
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self.use_tc = []
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self._machines = None
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self._adherents = None
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self._blacklisted_machines = None
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self._blacklisted_adherents = None
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self.chain_list={
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'raw':['OUTPUT', 'PREROUTING'],
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'mangle':['INPUT', 'OUTPUT', 'FORWARD', 'PREROUTING', 'POSTROUTING'],
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'filter':['INPUT', 'OUTPUT', 'FORWARD'],
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'nat':['OUTPUT', 'PREROUTING', 'POSTROUTING']
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}
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self.rules_list = {
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'raw': { 'OUTPUT':[], 'PREROUTING':[] },
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'mangle':{'INPUT':[], 'OUTPUT':[], 'FORWARD':[], 'PREROUTING':[], 'POSTROUTING':[]},
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'filter':{'INPUT':[], 'OUTPUT':[], 'FORWARD':[]},
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'nat':{'OUTPUT':[], 'PREROUTING':[], 'POSTROUTING':[]}
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}
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self.ipset={}
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self.ipset['mac_ip']={
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'adh' : Ipset("MAC-IP-ADH","macipmap","--from 138.231.136.0 --to 138.231.151.255"),
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'adm' : Ipset("MAC-IP-ADM","macipmap","--from 10.231.136.0 --to 10.231.136.255"),
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'app' : Ipset("MAC-IP-APP","macipmap","--from 10.2.9.0 --to 10.2.9.255"),
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}
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self.ipset['blacklist']={
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'hard' : Ipset("BLACKLIST-HARD","ipmap","--from 138.231.136.0 --to 138.231.151.255"),
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}
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def start(self):
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"""Démarre le pare-feu : génère les règles, puis les restore"""
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anim('\tChargement des machines')
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self.machines()
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print OK
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if squeeze:
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anim('\tVidage du pare-feu')
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fw.restore()
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print OK
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self.raw_table()
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self.mangle_table()
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self.filter_table()
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self.nat_table()
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anim('\tRestoration d\'iptables')
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fw.restore()
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print OK
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return
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def stop(self):
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"""Vide les règles du pare-feu"""
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fw.delete()
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fw.restore()
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return
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def restart(self):
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"""Alias de :py:func:`start`"""
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self.start()
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return
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def blacklist_maj(self, ips):
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"""Met à jours les blacklists pour les ip présentent dans la liste ``ips``"""
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self.blacklist_hard_maj(ips)
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def raw_table(self):
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"""Génère les règles pour la table ``raw`` et remplis les chaines de la table"""
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table = 'raw'
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return
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def mangle_table(self):
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"""Génère les règles pour la table ``mangle`` et remplis les chaines de la table"""
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table = 'mangle'
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return
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def filter_table(self):
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"""Génère les règles pour la table ``filter`` et remplis les chaines de la table"""
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table = 'filter'
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mac_ip_chain = self.test_mac_ip(table, fill_ipset=True)
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blacklist_hard_chain = self.blacklist_hard(table, fill_ipset=True)
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chain = 'INPUT'
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self.add(table, chain, '-i lo -j ACCEPT')
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self.add(table, chain, '-p icmp -j ACCEPT')
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self.add(table, chain, '-m state --state RELATED,ESTABLISHED -j ACCEPT')
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for net in NETs['all'] + NETs['adm'] + NETs['personnel-ens']:
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self.add(table, chain, '-s %s -j %s' % (net, mac_ip_chain))
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self.add(table, chain, '-j %s' % blacklist_hard_chain)
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chain = 'FORWARD'
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self.add(table, chain, '-j REJECT')
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return
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def nat_table(self):
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"""Génère les règles pour la table ``nat`` et remplis les chaines de la table"""
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table = 'nat'
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return
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def blacklist_hard_maj(self, ip_list):
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"""Met à jour les blacklists hard, est appelée par :py:func:`blacklist_maj`"""
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for ip in ip_list:
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machine = conn.search("ipHostNumber=%s" % ip)
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# Est-ce qu'il y a des blacklists hard parmis les blacklists de la machine
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if machine and set([bl.value['type'] for bl in machine[0].blacklist_actif() ]).intersection(blacklist_sanctions):
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try: self.ipset['blacklist']['hard'].add(ip)
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except IpsetError: pass
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else:
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try: self.ipset['blacklist']['hard'].delete(ip)
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except IpsetError: pass
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def blacklist_hard(self, table=None, fill_ipset=False, apply=False):
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"""Génère la chaine ``BLACKLIST_HARD``.
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Si ``fill_ipset`` est à ``True``, remplis l'ipset ``BLACKLIST-HARD``.
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Si ``apply`` est à True, applique directement les règles"""
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chain = 'BLACKLIST_HARD'
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if fill_ipset:
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anim('\tRestoration de l\'ipset %s' % self.ipset['blacklist']['hard'])
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# On récupère la liste de toutes les ips blacklistés hard
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bl_hard_ips = set(
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str(ip) for ips in
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[
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machine['ipHostNumber'] for machine in self.blacklisted_machines()
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if set([bl.value['type'] for bl in machine.blacklist_actif() ]).intersection(blacklist_sanctions)
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]
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for ip in ips
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)
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self.ipset['blacklist']['hard'].restore(bl_hard_ips)
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print OK
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if table == 'filter':
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pretty_print(table, chain)
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self.add(table, chain, '-m set --match-set %s src -j REJECT' % self.ipset['blacklist']['hard'] )
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self.add(table, chain, '-m set --match-set %s dst -j REJECT' % self.ipset['blacklist']['hard'] )
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print OK
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if apply:
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self.apply(table, chain)
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return chain
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def test_mac_ip_dispatch(self, func, machine):
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"""Détermine à quel set de mac-ip appliquer la fonction ``func`` (add, delete, append, ...)"""
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ips = machine['ipHostNumber']
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for ip in ips:
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# Si la machines est sur le réseau des adhérents
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if AddrInNet(str(ip), NETs['wifi']):
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# Les machines wifi sont vues à travers komaz
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func('adh', "%s,%s" % (ip, mac_komaz))
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elif AddrInNet(str(ip), NETs['fil']):
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func('adh', "%s,%s" % (ip, machine['macAddress'][0]))
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# Si la machine est sur le réseau admin
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elif AddrInNet(str(ip), NETs['adm']):
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func('adm', "%s,%s" % (ip, machine['macAddress'][0]))
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def test_mac_ip(self, table=None, fill_ipset=False, apply=False):
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"""Génère la chaine ``TEST_MAC-IP``.
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Si ``fill_ipset`` est à ``True``, remplis les ipsets ``MAC-IP-ADH``, ``MAC-IP-ADM``, ``MAC-IP-ADM``.
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Si ``apply`` est à True, applique directement les règles"""
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chain = 'TEST_MAC-IP'
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if fill_ipset:
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anim('\tRestoration des ipsets %s' % ', '.join(self.ipset['mac_ip'].keys()))
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rules={
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'adh':[],
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'adm':[],
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'app':[],
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}
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for machine in self.machines():
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self.test_mac_ip_dispatch(lambda set, data: rules[set].append(data), machine)
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for set,rules in rules.items():
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self.ipset['mac_ip'][set].restore(rules)
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print OK
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if table == 'filter':
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pretty_print(table, chain)
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for key in ['accueil', 'isolement', ]:
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for net in NETs[key]:
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self.add(table, chain, '-s %s -j RETURN' % net)
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for key in self.ipset['mac_ip'].keys():
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self.add(table, chain, '-m set --match-set %s src,src -j RETURN' % self.ipset['mac_ip'][key])
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# Proxy ARP de Komaz et Titanic pour OVH
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ip_ovh = conn.search("host=ovh.adm.crans.org")[0]['ipHostNumber'][0]
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self.add(table, chain, '-m mac -s %s --mac-source %s -j RETURN' % (ip_ovh, mac_komaz))
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self.add(table, chain, '-m mac -s %s --mac-source %s -j RETURN' % (ip_ovh, mac_titanic))
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self.add(table, chain, '-j REJECT')
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print OK
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if apply:
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self.apply(table, chain)
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return chain
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def mac_ip_maj(self, ip_list):
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"""Met à jour la correspondance mac-ip"""
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for ip in ip_list:
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machine = conn.search("ipHostNumber=%s" % ip)
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if machine:
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try: self.test_mac_ip_dispatch(lambda set, data: self.ipset['mac_ip'][set].delete(data.split(',',1)[0]), {'ipHostNumber' : [ip], 'macAddress':[''] })
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except IpsetError: pass
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self.test_mac_ip_dispatch(lambda set, data: self.ipset['mac_ip'][set].add(data), machine[0])
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else:
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try: self.test_mac_ip_dispatch(lambda set, data: self.ipset['mac_ip'][set].delete(data.split(',',1)[0]), {'ipHostNumber' : [ip], 'macAddress':[''] })
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except IpsetError: pass
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class firewall_base_routeur(firewall_base):
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"""Associe mac-ip pour les machines voyant plusieurs réseaux (wifi, filaire, personnel, ...)"""
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def test_mac_ip_dispatch(self, func, machine):
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"""Détermine à quel set de mac-ip appliquer la fonction func (add, delete, append, ...)"""
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ips = machine['ipHostNumber']
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for ip in ips:
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# Si la machines est sur le réseau des adhérents
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if AddrInNet(str(ip), NETs['wifi']):
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func('adh', "%s,%s" % (ip, machine['macAddress'][0]))
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elif AddrInNet(str(ip), NETs['fil']):
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func('adh', "%s,%s" % (ip, machine['macAddress'][0]))
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# Si la machine est sur le réseau admin
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elif AddrInNet(str(ip), NETs['adm']):
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func('adm', "%s,%s" % (ip, machine['macAddress'][0]))
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# Si la machine est sur le réseaux des appartements de l'ENS
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elif AddrInNet(str(ip), NETs['personnel-ens']):
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func('app', "%s,%s" % (ip, machine['macAddress'][0]))
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class firewall_base_wifionly(firewall_base):
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"""Associe mac-ip pour les machines wifi only : les machines filaires sont vues avec la mac de komaz"""
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def test_mac_ip_dispatch(self, func, machine):
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"""Détermine à quel set de mac-ip appliquer la fonction func (add, delete, append, ...)"""
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ips = machine['ipHostNumber']
|
|
for ip in ips:
|
|
# Si la machines est sur le réseau des adhérents
|
|
if AddrInNet(str(ip), NETs['wifi']):
|
|
func('adh', "%s,%s" % (ip, machine['macAddress'][0]))
|
|
elif AddrInNet(str(ip), NETs['fil']):
|
|
func('adh', "%s,%s" % (ip, mac_komaz))
|
|
# Si la machine est sur le réseau admin
|
|
elif AddrInNet(str(ip), NETs['adm']):
|
|
func('adm', "%s,%s" % (ip, machine['macAddress'][0]))
|
|
|
|
class firewall_komaz(firewall_base_routeur):
|
|
|
|
def __init__(self):
|
|
super(self.__class__, self).__init__()
|
|
|
|
self.reloadable.update({
|
|
'log_all' : self.log_all,
|
|
'admin_vlan' : self.admin_vlan,
|
|
'clamp_mss' : self.clamp_mss,
|
|
'ingress_filtering' : self.ingress_filtering,
|
|
'ssh_on_https' : self.ssh_on_https,
|
|
'connexion_secours' : self.connexion_secours,
|
|
'connexion_appartement' : self.connexion_appartement,
|
|
'blacklist_soft' : self.blacklist_soft,
|
|
'reseaux_non_routable' : self.reseaux_non_routable,
|
|
'filtrage_ports' : self.filtrage_ports,
|
|
'limitation_debit' : self.limitation_debit,
|
|
})
|
|
|
|
self.use_ipset.extend([self.blacklist_soft, self.reseaux_non_routable])
|
|
self.use_tc.extend([self.limitation_debit])
|
|
|
|
self.ipset['reseaux_non_routable'] = {
|
|
'deny' : Ipset("RESEAUX-NON-ROUTABLE-DENY","nethash"),
|
|
'allow' : Ipset("RESEAUX-NON-ROUTABLE-ALLOW","nethash"),
|
|
}
|
|
|
|
self.ipset['blacklist'].update({
|
|
'soft' : Ipset("BLACKLIST-SOFT","ipmap","--from 138.231.136.0 --to 138.231.151.255"),
|
|
'upload' : Ipset("BLACKLIST-UPLOAD","ipmap","--from 138.231.136.0 --to 138.231.151.255"),
|
|
})
|
|
|
|
def blacklist_maj(self, ips):
|
|
self.blacklist_hard_maj(ips)
|
|
self.blacklist_soft_maj(ips)
|
|
|
|
def raw_table(self):
|
|
return
|
|
|
|
def mangle_table(self):
|
|
table = 'mangle'
|
|
super(self.__class__, self).mangle_table()
|
|
|
|
chain = 'PREROUTING'
|
|
self.add(table, chain, '-j %s' % self.log_all(table))
|
|
self.add(table, chain, '-j %s' % self.blacklist_soft(table, fill_ipset=True))
|
|
self.add(table, chain, '-j %s' % self.connexion_secours(table))
|
|
self.add(table, chain, '-p tcp -j CONNMARK --restore-mark')
|
|
|
|
chain = 'POSTROUTING'
|
|
self.add(table, chain, '-j %s' % self.clamp_mss(table))
|
|
self.add(table,chain, '-j %s' % self.limitation_debit(table, run_tc=True))
|
|
return
|
|
|
|
def filter_table(self):
|
|
table = 'filter'
|
|
super(self.__class__, self).filter_table()
|
|
|
|
mac_ip_chain = self.test_mac_ip()
|
|
blacklist_hard_chain = self.blacklist_hard()
|
|
|
|
chain = 'FORWARD'
|
|
self.flush(table, chain)
|
|
self.add(table, chain, '-i lo -j ACCEPT')
|
|
self.add(table, chain, '-p icmp -j ACCEPT')
|
|
self.add(table, chain, '-j %s' % self.admin_vlan(table))
|
|
self.add(table, chain, '-i %s -j %s' % (dev['out'], blacklist_hard_chain))
|
|
self.add(table, chain, '-o %s -j %s' % (dev['out'], blacklist_hard_chain))
|
|
self.add(table, chain, '-m state --state RELATED,ESTABLISHED -j ACCEPT')
|
|
self.add(table, chain, '-j %s' % self.reseaux_non_routable(table, fill_ipset=True))
|
|
self.add(table, chain, '-j %s' % self.blacklist_soft(table))
|
|
for net in NETs['all'] + NETs['adm'] + NETs['personnel-ens']:
|
|
self.add(table, chain, '-s %s -j %s' % (net, mac_ip_chain))
|
|
self.add(table, chain, '-j %s' % self.connexion_secours(table))
|
|
self.add(table, chain, '-j %s' % self.connexion_appartement(table))
|
|
self.add(table, chain, '-j %s' % self.ingress_filtering(table))
|
|
self.add(table, chain, '-j %s' % self.filtrage_ports(table))
|
|
return
|
|
|
|
def nat_table(self):
|
|
table = 'nat'
|
|
super(self.__class__, self).nat_table()
|
|
|
|
chain = 'PREROUTING'
|
|
self.add(table, chain, '-j %s' % self.ssh_on_https(table))
|
|
self.add(table, chain, '-j %s' % self.connexion_secours(table))
|
|
self.add(table, chain, '-j %s' % self.blacklist_soft(table))
|
|
|
|
chain = 'POSTROUTING'
|
|
self.add(table, chain, '-j %s' % self.connexion_appartement(table))
|
|
return
|
|
|
|
def test_mac_ip(self, table=None, fill_ipset=False, apply=False):
|
|
chain = super(self.__class__, self).test_mac_ip()
|
|
|
|
if table == 'filter':
|
|
for key in ['out', 'tun-ovh' ]:
|
|
self.add(table, chain, '-i %s -j RETURN' % dev[key])
|
|
|
|
return super(self.__class__, self).test_mac_ip(table, fill_ipset, apply)
|
|
|
|
|
|
def log_all(self, table=None, apply=False):
|
|
chain = 'LOG_ALL'
|
|
|
|
if table == 'mangle':
|
|
pretty_print(table, chain)
|
|
for device in dev.values():
|
|
self.add(table, chain, '-i %s -m state --state NEW -j LOG --log-prefix "LOG_ALL "' % device)
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def admin_vlan(self, table=None, apply=False):
|
|
chain = 'VLAN-ADM'
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
for net in NETs['adm']:
|
|
self.add(table, chain, '-o %s -s %s -j ACCEPT' % (dev['tun-ovh'], net))
|
|
self.add(table, chain, '-i %s -d %s -j ACCEPT' % (dev['tun-ovh'], net))
|
|
self.add(table, chain, '-d %s -j REJECT' % net)
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def qos(self, table=None, apply=False):
|
|
return
|
|
|
|
def clamp_mss(self, table=None, apply=False):
|
|
"""Force la MSS (Max Segment Size) TCP à rentrer dans la MTU (Max Transfert Unit)"""
|
|
chain = 'CLAMP-MSS'
|
|
if table == 'mangle':
|
|
pretty_print(table, chain)
|
|
|
|
self.add(table, chain, '-p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu')
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def ingress_filtering(self, table=None, apply=False):
|
|
"""Pour ne pas router les paquêtes n'appartenant pas à notre plage ip voulant sortir de notre réseau
|
|
et empêcher certain type de spoof (cf http://travaux.ovh.net/?do=details&id=5183)"""
|
|
chain = 'INGRESS_FILTERING'
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
|
|
for net in NETs['all']:
|
|
self.add(table, chain, '-o %s -s %s -j RETURN' % (dev['out'], net))
|
|
self.add(table, chain, '-o %s -j LOG --log-prefix BAD_ROUTE' % dev['out'])
|
|
self.add(table, chain, '-o %s -j DROP' % dev['out'])
|
|
for net_d in NETs['all']:
|
|
for net_s in NETs['all']:
|
|
self.add(table, chain,'-i %s ! -s %s -d %s -j RETURN' % (dev['out'], net_s, net_d))
|
|
self.add(table, chain,'-i %s -j LOG --log-prefix BAD_SRC' % dev['out'])
|
|
self.add(table, chain,'-i %s -j DROP' % dev['out'])
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def ssh_on_https(self, table=None, apply=False):
|
|
"""Pour faire fonctionner ssh2.crans.org"""
|
|
chain = 'SSH2'
|
|
|
|
if table == 'nat':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-p tcp -d 138.231.136.2 --dport 22 -j DNAT --to-destination 138.231.136.1:22') # redirection du ssh vers zamok
|
|
self.add(table, chain, '-p tcp -d 138.231.136.2 --dport 443 -j DNAT --to-destination 138.231.136.1:22') # redirection du ssh vers zamok (pour passer dans un proxy, avec corkscrew)
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def connexion_secours(self, table=None, apply=False):
|
|
"""Redirige les paquets vers un proxy lorsqu'on est en connexion de secours"""
|
|
chain = 'CONNEXION-SECOURS'
|
|
|
|
if table == 'mangle':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-p tcp -s 138.231.136.0/16 ! -d 138.231.136.0/16 --destination-port 80 -m condition --condition secours -j MARK --set-mark %s' % (config.firewall.mark['secours']))
|
|
self.add(table, chain, '-m mark --mark %s -j ACCEPT' % config.firewall.mark['secours'])
|
|
print OK
|
|
|
|
if table == 'nat':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-p tcp -m mark --mark %s -j DNAT --to-destination 10.231.136.4:3129' % config.firewall.mark['secours'] )
|
|
print OK
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-p tcp -s 138.231.136.0/16 ! -d 138.231.136.0/16 --destination-port 443 -m condition --condition secours -j REJECT')
|
|
self.add(table, chain, '-m mark --mark %s -j ACCEPT' % config.firewall.mark['secours'])
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def connexion_appartement(self, table=None, apply=False):
|
|
"""PNAT les appartements derrière appartement.crans.org"""
|
|
chain = 'CONNEXION-APPARTEMENT'
|
|
|
|
if table == 'nat':
|
|
pretty_print(table, chain)
|
|
for dev_key in ['out', 'fil', 'wifi']:
|
|
for net in NETs['personnel-ens']:
|
|
self.add(table, chain, '-o %s -s %s -j SNAT --to 138.231.136.44' % (dev[dev_key], net))
|
|
print OK
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
for net in NETs['personnel-ens']:
|
|
self.add(table, chain, '-s %s -j ACCEPT' % net)
|
|
self.add(table, chain, '-d %s -j ACCEPT' % net)
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def blacklist_soft_maj(self, ip_list):
|
|
for ip in ip_list:
|
|
machine = conn.search("ipHostNumber=%s" % ip)
|
|
# Est-ce qu'il y a des blacklists soft parmis les blacklists de la machine
|
|
if machine:
|
|
if set([bl.value['type'] for bl in machine[0].blacklist_actif() ]).intersection(blacklist_sanctions_soft):
|
|
try: self.ipset['blacklist']['soft'].add(ip)
|
|
except IpsetError: pass
|
|
if machine and set([bl.value['type'] for bl in machine[0].blacklist_actif() ]).intersection(blacklist_bridage_upload):
|
|
try: self.ipset['blacklist']['upload'].add(ip)
|
|
except IpsetError: pass
|
|
else:
|
|
try: self.ipset['blacklist']['soft'].delete(ip)
|
|
except IpsetError: pass
|
|
try: self.ipset['blacklist']['upload'].delete(ip)
|
|
except IpsetError: pass
|
|
|
|
|
|
def blacklist_soft(self, table=None, fill_ipset=False, apply=False):
|
|
"""Redirige les gens blacklisté vers le portail captif"""
|
|
chain = 'BLACKLIST_SOFT'
|
|
|
|
if fill_ipset:
|
|
anim('\tRestoration de l\'ipset %s' % self.ipset['blacklist']['soft'])
|
|
# On récupère la liste de toutes les ips blacklistés soft
|
|
bl_soft_ips = set(
|
|
str(ip) for ips in
|
|
[
|
|
machine['ipHostNumber'] for machine in self.blacklisted_machines()
|
|
if set([bl.value['type'] for bl in machine.blacklist_actif() ]).intersection(blacklist_sanctions_soft)
|
|
]
|
|
for ip in ips
|
|
)
|
|
|
|
bl_upload_ips = set(
|
|
str(ip) for ips in
|
|
[
|
|
machine['ipHostNumber'] for machine in self.blacklisted_machines()
|
|
if set([bl.value['type'] for bl in machine.blacklist_actif() ]).intersection(blacklist_bridage_upload)
|
|
]
|
|
for ip in ips
|
|
)
|
|
|
|
self.ipset['blacklist']['soft'].restore(bl_soft_ips)
|
|
self.ipset['blacklist']['upload'].restore(bl_upload_ips)
|
|
print OK
|
|
|
|
if table == 'mangle':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-p tcp ! --dport 80 -j RETURN')
|
|
self.add(table, chain, '! -p tcp -j RETURN')
|
|
for net in NETs['all']:
|
|
self.add(table, chain, '-d %s -j RETURN' % net)
|
|
self.add(table, chain, '-m set --match-set %s src -j MARK --set-mark %s'
|
|
% (self.ipset['blacklist']['soft'], config.firewall.mark['proxy']))
|
|
|
|
print OK
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-m mark --mark %s -j ACCEPT' % config.firewall.mark['proxy'])
|
|
print OK
|
|
|
|
if table == 'nat':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-p tcp -m mark --mark %s -j DNAT --to-destination 10.231.136.4:3128' % config.firewall.mark['proxy'] )
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def reseaux_non_routable(self, table=None, fill_ipset=False, apply=False):
|
|
"""Bloque les réseaux non routables autres que ceux utilisés par le crans"""
|
|
chain = 'RESEAUX_NON_ROUTABLES'
|
|
|
|
if fill_ipset:
|
|
anim('\tRestoration de l\'ipset reseaux_non_routable')
|
|
allowed = [ net for nets in NETs.values() for net in nets if NetInNets(net, config.firewall.reseaux_non_routables) ]
|
|
self.ipset['reseaux_non_routable']['allow'].restore(allowed)
|
|
self.ipset['reseaux_non_routable']['deny'].restore(config.firewall.reseaux_non_routables)
|
|
print OK
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-m set --match-set %s src -j RETURN' % self.ipset['reseaux_non_routable']['allow'])
|
|
self.add(table, chain, '-m set --match-set %s dst -j RETURN' % self.ipset['reseaux_non_routable']['allow'])
|
|
self.add(table, chain, '-m set --match-set %s src -j DROP' % self.ipset['reseaux_non_routable']['deny'])
|
|
self.add(table, chain, '-m set --match-set %s dst -j DROP' % self.ipset['reseaux_non_routable']['deny'])
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def filtrage_ports_maj(self, ip_lists):
|
|
self.filtrage_ports('filter', apply=True)
|
|
|
|
def filtrage_ports(self, table=None, apply=False):
|
|
"""Ouvre les ports vers et depuis les machines du réseau crans"""
|
|
chain = 'FILTRAGE-PORTS'
|
|
|
|
def format_port(port):
|
|
port = str(port)
|
|
if port.endswith(':'):
|
|
port = '%s65535' % port
|
|
if port.startswith(':'):
|
|
port = '0%s' % port
|
|
return port
|
|
|
|
def add_ports(ip, proto, sens):
|
|
self.add(
|
|
table,
|
|
chain,
|
|
'-p %s -%s %s -m multiport --dports %s -j RETURN' % (
|
|
proto,
|
|
(sens=='out' and 's') or (sens == 'in' and 'd'),
|
|
ip,
|
|
','.join( format_port(port) for port in machine['portTCP%s' % sens])
|
|
)
|
|
)
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
for net in NETs['adherents'] + NETs['wifi-adh'] + NETs['personnel-ens']:
|
|
for proto in config.firewall.ports_default.keys():
|
|
if config.firewall.ports_default[proto]['output']:
|
|
self.add(table, chain, '-p %s -s %s -m multiport --dports %s -j RETURN' % (proto, net, ','.join( format_port(port) for port in config.firewall.ports_default[proto]['output'])))
|
|
if config.firewall.ports_default[proto]['input']:
|
|
self.add(table, chain, '-p %s -d %s -m multiport --dports %s -j RETURN' % (proto, net, ','.join( format_port(port) for port in config.firewall.ports_default[proto]['input'])))
|
|
|
|
for machine in self.machines():
|
|
for ip in machine['ipHostNumber']:
|
|
if 'portTCPout' in machine.attrs.keys():
|
|
add_ports(ip,'tcp','out')
|
|
if 'portUDPout' in machine.attrs.keys():
|
|
add_ports(ip,'udp','out')
|
|
if 'portTCPin' in machine.attrs.keys():
|
|
add_ports(ip,'tcp','in')
|
|
if 'portUDPin' in machine.attrs.keys():
|
|
add_ports(ip,'udp','in')
|
|
|
|
self.add(table, chain, '-j REJECT')
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def limitation_debit(self, table=None, run_tc=False, apply=False):
|
|
"""Limite le débit de la connexion selon l'agréement avec l'ENS"""
|
|
chain = 'LIMITATION-DEBIT'
|
|
|
|
debit_max = config.firewall.debit_max
|
|
uplink_speed = '1024mbit'
|
|
|
|
if table == 'mangle':
|
|
pretty_print(table, chain)
|
|
# Pas de QoS vers/depuis la zone ENS
|
|
self.add(table, chain, '-d 138.231.0.0/16 -s 138.231.0.0/16 -j RETURN')
|
|
|
|
# Idem pour le ftp
|
|
self.add(table, chain, '-d 138.231.136.98 -j RETURN')
|
|
self.add(table, chain, '-s 138.231.136.98 -j RETURN')
|
|
|
|
# Idem vers OVH pour le test de la connection de secours
|
|
self.add(table, chain, '-d 91.121.84.138 -j RETURN')
|
|
self.add(table, chain, '-s 91.121.84.138 -j RETURN')
|
|
|
|
# Classification par defaut pour tous les paquets
|
|
for net in NETs['all']:
|
|
self.add(table, chain, '-o %s -s %s -j CLASSIFY --set-class 1:10' % (dev['out'], net))
|
|
self.add(table, chain, '-o %s -d %s -j CLASSIFY --set-class 1:10' % (dev['fil'], net))
|
|
self.add(table, chain, '-o %s -d %s -j CLASSIFY --set-class 1:10' % (dev['wifi'], net))
|
|
|
|
# Classification pour les appartements
|
|
for net in NETs['personnel-ens']:
|
|
self.add(table, chain, '-o %s -d %s -j CLASSIFY --set-class 1:3' % (dev['app'], net))
|
|
self.add(table, chain, '-o %s -s %s -j CLASSIFY --set-class 1:2' % (dev['out'], net))
|
|
|
|
# Classification pour les blacklists upload
|
|
self.add(table, chain, '-o %s -m set --match-set %s src -j CLASSIFY --set-class 1:11' % (dev['out'], self.ipset['blacklist']['upload']))
|
|
|
|
# Classification pour la voip
|
|
self.add(table, chain, '-d sip.crans.org -j CLASSIFY --set-class 1:12')
|
|
self.add(table, chain, '-s sip.crans.org -j CLASSIFY --set-class 1:12')
|
|
print OK
|
|
|
|
if run_tc:
|
|
anim('\tApplication des commandes tc')
|
|
for int_key in ['out', 'fil', 'wifi']:
|
|
try:
|
|
tc('qdisc del dev %s root' % dev[int_key])
|
|
except TcError:
|
|
pass
|
|
tc('qdisc add dev %s root handle 1: htb r2q 1' % dev[int_key])
|
|
tc("class add dev %s parent 1: classid 1:1 "
|
|
"htb rate %s ceil %s" % (dev[int_key], uplink_speed, uplink_speed))
|
|
tc("class add dev %s parent 1:1 classid 1:2 "
|
|
"htb rate %skbps ceil %skbps" % (dev[int_key], debit_max, debit_max))
|
|
|
|
# Classe par defaut
|
|
tc('class add dev %s parent 1:2 classid 1:10 '
|
|
'htb rate %skbps ceil %skbps prio 1' % (dev[int_key], debit_max, debit_max))
|
|
tc('qdisc add dev %s parent 1:10 '
|
|
'handle 10: sfq perturb 10' % dev[int_key])
|
|
|
|
# Classe par pour la voip
|
|
tc('class add dev %s parent 1:2 classid 1:12 '
|
|
'htb rate %skbps ceil %skbps prio 0' % (dev[int_key], debit_max, debit_max))
|
|
tc('qdisc add dev %s parent 1:12 '
|
|
'handle 12: sfq perturb 10' % dev[int_key])
|
|
|
|
#Classe des decos upload
|
|
tc('class add dev %s parent 1:2 classid 1:11 '
|
|
'htb rate 30kbps ceil 30kbps prio 1' % dev['out'])
|
|
tc('qdisc add dev %s parent 1:11 '
|
|
'handle 11: sfq perturb 10' % dev['out'])
|
|
|
|
for int_key in ['app']:
|
|
try:
|
|
tc('qdisc del dev %s root' % dev[int_key])
|
|
except TcError:
|
|
pass
|
|
tc('qdisc add dev %s root handle 1: htb r2q 1' % dev[int_key])
|
|
|
|
tc("class add dev %s parent 1: classid 1:1 "
|
|
"htb rate 128kbps ceil 128kbps" % dev[int_key])
|
|
|
|
# Classe pour l'upload des appartements
|
|
tc("class add dev %s parent 1:1 classid 1:2 "
|
|
"htb rate 128kbps ceil 128kbps" % dev[int_key])
|
|
tc('qdisc add dev %s parent 1:2 '
|
|
'handle 2: sfq perturb 10' % dev[int_key])
|
|
|
|
# Classe pour le download des apparetments
|
|
tc("class add dev %s parent 1: classid 1:3 "
|
|
"htb rate %skbps ceil %skbps" % (dev[int_key], debit_max/10, debit_max/2))
|
|
tc('qdisc add dev %s parent 1:3 '
|
|
'handle 3: sfq perturb 10' % dev[int_key])
|
|
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
|
|
class firewall_zamok(firewall_base):
|
|
|
|
def __init__(self):
|
|
super(self.__class__, self).__init__()
|
|
|
|
self.reloadable.update({
|
|
'admin_vlan' : self.admin_vlan,
|
|
'blacklist_output' : self.blacklist_output,
|
|
})
|
|
|
|
self.use_ipset.extend([])
|
|
self.use_tc.extend([])
|
|
|
|
|
|
def raw_table(self):
|
|
table = 'raw'
|
|
|
|
super(self.__class__, self).raw_table()
|
|
|
|
return
|
|
|
|
def mangle_table(self):
|
|
table = 'mangle'
|
|
|
|
super(self.__class__, self).mangle_table()
|
|
|
|
return
|
|
|
|
def filter_table(self):
|
|
table = 'filter'
|
|
|
|
super(self.__class__, self).filter_table()
|
|
|
|
chain = 'OUTPUT'
|
|
self.add(table, chain , '-d 224.0.0.0/4 -j DROP')
|
|
admin_vlan_chain = self.admin_vlan(table)
|
|
self.add(table, chain, '-m state --state RELATED,ESTABLISHED -j ACCEPT')
|
|
for net in NETs['adm']:
|
|
self.add(table, chain, '-d %s -j %s' % (net, admin_vlan_chain))
|
|
self.add(table, chain, '-o lo -j ACCEPT')
|
|
self.add(table, chain, '-j %s' % self.blacklist_output(table))
|
|
|
|
return
|
|
|
|
def nat_table(self):
|
|
table = 'nat'
|
|
|
|
super(self.__class__, self).raw_table()
|
|
return
|
|
|
|
def admin_vlan(self, table=None, apply=False):
|
|
chain='ADMIN-VLAN'
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
# ldap et dns toujours joinable
|
|
self.add(table, chain, '-p tcp --dport ldap -j ACCEPT')
|
|
self.add(table, chain, '-p tcp --dport domain -j ACCEPT')
|
|
self.add(table, chain, '-p udp --dport domain -j ACCEPT')
|
|
|
|
# Pour le nfs (le paquet à laisser passer n'a pas d'owner)
|
|
self.add(table, chain, '-d nfs.adm.crans.org -j ACCEPT')
|
|
|
|
for user in adm_users:
|
|
try: self.add(table, chain, '-m owner --uid-owner %d -j ACCEPT' % pwd.getpwnam(user)[2])
|
|
except KeyError: print "Utilisateur %s inconnu" % user
|
|
|
|
for nounou in conn.search("droits=%s" % lc_ldap.attributs.nounou):
|
|
self.add(table, chain, '-m owner --uid-owner %s -j RETURN' % nounou['uidNumber'][0])
|
|
|
|
# Rien d'autre ne passe
|
|
self.add(table, chain, '-j REJECT --reject-with icmp-net-prohibited')
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def blacklist_maj(self, ips):
|
|
anim('\tMise à jour des blacklists')
|
|
self.blacklist_output('filter', apply=True)
|
|
self.blacklist_hard_maj(ips)
|
|
print OK
|
|
|
|
def blacklist_output(self, table=None, apply=False):
|
|
"""Empêche les gens blacklisté d'utiliser zamok comme relaie"""
|
|
chain='BLACKLIST-OUTPUT'
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
self.add(table, chain, '-d 127.0.0.1/8 -j RETURN')
|
|
for net in NETs['all']:
|
|
self.add(table, chain, '-d %s -j RETURN' % net)
|
|
for adh in self.blacklisted_adherents():
|
|
if 'uidNumber' in adh.attrs.keys():
|
|
self.add(table, chain, '-m owner --uid-owner %s -j REJECT' % adh['uidNumber'][0])
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
class firewall_routeur(firewall_base):
|
|
|
|
def __init__(self):
|
|
super(self.__class__, self).__init__()
|
|
|
|
self.reloadable.update({
|
|
'portail_captif_route' : self.portail_captif_route,
|
|
'portail_captif' : self.portail_captif,
|
|
})
|
|
|
|
self.use_ipset.extend([])
|
|
self.use_tc.extend([])
|
|
|
|
def raw_table(self):
|
|
table = 'raw'
|
|
super(self.__class__, self).raw_table()
|
|
return
|
|
|
|
def mangle_table(self):
|
|
table = 'mangle'
|
|
super(self.__class__, self).mangle_table()
|
|
return
|
|
|
|
def filter_table(self):
|
|
table = 'filter'
|
|
super(self.__class__, self).filter_table()
|
|
|
|
chain = 'FORWARD'
|
|
self.flush(table, chain)
|
|
self.add(table, chain, '-j %s' % self.portail_captif_route(table))
|
|
return
|
|
|
|
def nat_table(self):
|
|
table = 'nat'
|
|
super(self.__class__, self).raw_table()
|
|
|
|
chain = 'PREROUTING'
|
|
self.add(table, chain, '-j %s' % self.portail_captif(table))
|
|
|
|
chain = 'POSTROUTING'
|
|
self.add(table, chain, '-j %s' % self.portail_captif_route(table))
|
|
return
|
|
|
|
def portail_captif_route(self, table=None, apply=False):
|
|
"""PNAT les (ip,port) à laisser passer à travers le portail captif"""
|
|
chain = 'CAPTIF-ROUTE'
|
|
|
|
if table == 'filter':
|
|
pretty_print(table, chain)
|
|
for ip in accueil_route.keys():
|
|
for type in accueil_route[ip].keys():
|
|
if type in ['udp', 'tcp']:
|
|
self.add(table, chain, '-p %s -d %s -m multiport --dports %s -j ACCEPT' % (type, ip, ','.join(accueil_route[ip][type])))
|
|
self.add(table, chain, '-p %s -s %s -m multiport --sports %s -j ACCEPT' % (type, ip, ','.join(accueil_route[ip][type])))
|
|
self.add(table, chain, '-j REJECT')
|
|
print OK
|
|
|
|
if table == 'nat':
|
|
pretty_print(table, chain)
|
|
#intranet et wiki pour le vlan accueil
|
|
for ip in accueil_route.keys():
|
|
for type in accueil_route[ip].keys():
|
|
if type in ['udp', 'tcp']:
|
|
for net in NETs['accueil']:
|
|
self.add(table, chain, '-s %s -p %s -d %s -m multiport --dports %s -j MASQUERADE' % (net, type, ip, ','.join(accueil_route[ip][type])))
|
|
for net in NETs['isolement']:
|
|
self.add(table, chain, '-s %s -p %s -d %s -m multiport --dports %s -j MASQUERADE' % (net, type, ip, ','.join(accueil_route[ip][type])))
|
|
for net in NETs['personnel-ens']:
|
|
self.add(table, chain, '-i %s -s %s -j MASQUERADE' % (dev['app'], net))
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
def portail_captif(self, table=None, apply=False):
|
|
"""Redirige vers le portail captif"""
|
|
chain = 'PORTAIL-CAPTIF'
|
|
|
|
if table == 'nat':
|
|
pretty_print(table, chain)
|
|
for ip in accueil_route.keys():
|
|
for type in accueil_route[ip].keys():
|
|
if type in ['udp', 'tcp']:
|
|
self.add(table, chain, '-p %s -d %s -m multiport --dports %s -j RETURN' % (type, ip, ','.join(accueil_route[ip][type])))
|
|
|
|
for net in NETs['isolement']:
|
|
self.add(table, chain, '-p tcp -s %s --destination-port 80 -j DNAT --to-destination 10.52.0.10' % net)
|
|
|
|
for net in NETs['accueil']:
|
|
self.add(table, chain, '-p tcp -s %s --destination-port 80 -j DNAT --to-destination 10.51.0.10' % net)
|
|
self.add(table, chain, '-p udp -s %s --dport 53 -j DNAT --to 10.51.0.10' % net)
|
|
self.add(table, chain, '-p tcp -s %s --dport 53 -j DNAT --to 10.51.0.10' % net)
|
|
print OK
|
|
|
|
if apply:
|
|
self.apply(table, chain)
|
|
return chain
|
|
|
|
|
|
#: Associe à un ``hostname`` la classe du pare-feu correspondant
|
|
firewall = {
|
|
'komaz' : firewall_komaz,
|
|
'zamok' : firewall_zamok,
|
|
'routeur' : firewall_routeur,
|
|
'gordon' : firewall_base_routeur,
|
|
'eap' : firewall_base_wifionly,
|
|
}
|
|
|
|
if hostname in firewall.keys():
|
|
#: Classe du pare-feu pour la machine ``hostname`` ou :py:class:`firewall_base` si non trouvé
|
|
firewall = firewall[hostname]
|
|
else:
|
|
#: Classe du pare-feu pour la machine ``hostname`` ou :py:class:`firewall_base` si non trouvé
|
|
firewall = firewall_base
|
|
|
|
if __name__ == '__main__' :
|
|
|
|
fw = firewall()
|
|
|
|
# Chaînes pouvant être recontruites
|
|
chaines = fw.reloadable.keys()
|
|
|
|
def __usage(txt=None) :
|
|
if txt!=None : cprint(txt,'gras')
|
|
|
|
chaines.sort()
|
|
|
|
print """Usage:
|
|
%(p)s start : Construction du firewall.
|
|
%(p)s restart : Reconstruction du firewall.
|
|
%(p)s stop : Arrêt du firewall.
|
|
%(p)s <noms de chaînes> : reconstruit les chaînes
|
|
Les chaînes pouvant être reconstruites sont :
|
|
%(chaines)s
|
|
Pour reconfiguration d'IPs particulières, utiliser generate. """ % \
|
|
{ 'p' : sys.argv[0].split('/')[-1] , 'chaines' : '\n '.join(chaines) }
|
|
sys.exit(-1)
|
|
|
|
# Bons arguments ?
|
|
if len(sys.argv) == 1 :
|
|
__usage()
|
|
for arg in sys.argv[1:] :
|
|
if arg in [ 'stop', 'restart', 'start' ] and len(sys.argv) != 2 :
|
|
__usage("L'argument %s ne peut être employé que seul." % arg)
|
|
|
|
if arg not in [ 'stop', 'restart', 'start' ] + chaines :
|
|
__usage("L'argument %s est inconnu." % arg)
|
|
|
|
for arg in sys.argv[1:] :
|
|
if arg == 'stop':
|
|
fw.stop()
|
|
elif arg == 'start':
|
|
fw.start()
|
|
elif arg == 'restart':
|
|
fw.restart()
|
|
else:
|
|
|
|
if squeeze:
|
|
anim('\tVidage de %s' % fw.reloadable[arg]())
|
|
for table in ['raw', 'mangle', 'filter', 'nat']:
|
|
fw.flush(table, fw.reloadable[arg]())
|
|
fw.restore(noflush=True)
|
|
print OK
|
|
|
|
for table in ['raw', 'mangle', 'filter', 'nat']:
|
|
fw.reloadable[arg](table)
|
|
if fw.reloadable[arg] in fw.use_ipset:
|
|
fw.reloadable[arg](fill_ipset=True)
|
|
if fw.reloadable[arg] in fw.use_tc:
|
|
fw.reloadable[arg](run_tc=True)
|
|
|
|
anim('\tRestoration d\'iptables')
|
|
fw.restore(noflush=True)
|
|
print OK
|