3 ### Firewall configuration for vampire
5 ### (c) 2008 Mark Wooding
8 ###----- Licensing notice ---------------------------------------------------
10 ### This program is free software; you can redistribute it and/or modify
11 ### it under the terms of the GNU General Public License as published by
12 ### the Free Software Foundation; either version 2 of the License, or
13 ### (at your option) any later version.
15 ### This program is distributed in the hope that it will be useful,
16 ### but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ### GNU General Public License for more details.
20 ### You should have received a copy of the GNU General Public License
21 ### along with this program; if not, write to the Free Software Foundation,
22 ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 ###--------------------------------------------------------------------------
27 ## This router is involved in a routing asymmetry.
29 setconf(log_martians, 0)
31 ###--------------------------------------------------------------------------
32 ### Network interfaces.
35 ## Interface definitions.
38 if_safe=$if_dmz,$if_trusted
42 if_its_mz=$if_dmz,$if_trusted
43 if_its_pi=$if_dmz,$if_trusted
46 ###--------------------------------------------------------------------------
47 ### vampire-specific rules.
50 ## Externally visible services.
51 allowservices inbound tcp \
63 tor_public tor_directory i2p
64 allowservices inbound udp \
70 ## Extend some services to local untrusted hosts.
71 clearchain inbound-untrusted
72 run iptables -A inbound -j inbound-untrusted \
75 allowservices inbound-untrusted tcp \
77 netbios_ssn microsoft_ds
78 allowservices inbound-untrusted udp \
82 ## Provide syslog for evolution.
83 run iptables -A inbound -j ACCEPT \
85 -p udp --destination-port $port_syslog
87 ## Watch outgoing Tor usage.
88 run iptables -A OUTPUT -m multiport \
89 -p tcp --source-ports $port_tor_public,$port_tor_directory
91 ## Other interesting things.
93 ntpclient inbound $ntp_servers
95 ## NAT for RFC1918 addresses.
96 for i in PREROUTING OUTPUT POSTROUTING; do
97 run iptables -t nat -P $i ACCEPT 2>/dev/null || :
98 run iptables -t nat -F $i 2>/dev/null || :
100 run iptables -t nat -F
101 run iptables -t nat -X
103 run iptables -t nat -N outbound
104 run iptables -t nat -A outbound -j RETURN ! -o $if_dmz
105 run iptables -t nat -A outbound -j RETURN ! -s 172.29.198.0/23
106 run iptables -t nat -A outbound -j RETURN -d 62.49.204.144/28
107 run iptables -t nat -A outbound -j RETURN -d 172.29.198.0/23
108 run iptables -t nat -A outbound -j SNAT --to-source 62.49.204.158
109 run iptables -t nat -A POSTROUTING -j outbound
111 ## Set up NAT protocol helpers. In particular, SIP needs some special
113 run modprobe nf_conntrack_sip \
115 sip_direct_signalling=0 \
117 for p in ftp sip h323; do
118 run modprobe nf_nat_$p
122 ###----- That's all, folks --------------------------------------------------