3 ### Firewall configuration for radius
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
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18 ### GNU General Public License for more details.
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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.
40 if_vpn=$if_dmz,$if_trusted
41 if_iodine=$if_dmz,$if_trusted
42 if_its_mz=$if_dmz,$if_trusted
43 if_its_pi=$if_dmz,$if_trusted
46 ###--------------------------------------------------------------------------
47 ### radius-specific rules.
50 ## Externally visible services.
51 allowservices inbound tcp \
55 allowservices inbound udp \
59 ## Provide DNS resolution to local untrusted hosts.
61 run iptables -A inbound -j ACCEPT \
63 -p $p --destination-port $port_dns
66 ## Provide syslog for evolution.
67 run iptables -A inbound -j ACCEPT \
69 -p udp --destination-port $port_syslog
71 ## Other interesting things.
74 ## NAT for RFC1918 addresses.
75 for i in PREROUTING OUTPUT POSTROUTING; do
76 run iptables -t nat -P $i ACCEPT 2>/dev/null || :
77 run iptables -t nat -F $i 2>/dev/null || :
79 run iptables -t nat -F
80 run iptables -t nat -X
82 run iptables -t nat -N outbound
83 run iptables -t nat -A outbound -j RETURN ! -o $if_dmz
84 run iptables -t nat -A outbound -j RETURN ! -s 172.29.198.0/23
85 run iptables -t nat -A outbound -j RETURN -d 62.49.204.144/28
86 run iptables -t nat -A outbound -j RETURN -d 172.29.198.0/23
87 run iptables -t nat -A outbound -j SNAT --to-source 62.49.204.158
88 run iptables -t nat -A POSTROUTING -j outbound
91 ###----- That's all, folks --------------------------------------------------