Commit | Line | Data |
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775bd287 | 1 | ### -*-sh-*- |
bfdc045d | 2 | ### |
a3972fea | 3 | ### Firewall configuration for radius |
bfdc045d MW |
4 | ### |
5 | ### (c) 2008 Mark Wooding | |
6 | ### | |
7 | ||
8 | ###----- Licensing notice --------------------------------------------------- | |
9 | ### | |
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. | |
14 | ### | |
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. | |
19 | ### | |
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. | |
23 | ||
24 | ###-------------------------------------------------------------------------- | |
08926d25 MW |
25 | ### Config settings. |
26 | ||
27 | ## This router is involved in a routing asymmetry. | |
28 | setconf(rp_filter, 0) | |
29 | setconf(log_martians, 0) | |
30 | ||
31 | ###-------------------------------------------------------------------------- | |
bfdc045d MW |
32 | ### Network interfaces. |
33 | ||
34 | m4_divert(44)m4_dnl | |
35 | ## Interface definitions. | |
08926d25 MW |
36 | if_dmz=eth0 |
37 | if_trusted=eth1 | |
38 | if_safe=eth2 | |
39 | if_untrusted=eth3 | |
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 | |
bfdc045d MW |
44 | |
45 | m4_divert(-1) | |
46 | ###-------------------------------------------------------------------------- | |
a3972fea | 47 | ### radius-specific rules. |
bfdc045d MW |
48 | |
49 | m4_divert(82)m4_dnl | |
50 | ## Externally visible services. | |
51 | allowservices inbound tcp \ | |
6f74cc82 | 52 | ident \ |
a3972fea MW |
53 | dns iodine \ |
54 | ssh | |
bfdc045d | 55 | allowservices inbound udp \ |
a3972fea MW |
56 | dns iodine \ |
57 | tripe | |
bfdc045d MW |
58 | |
59 | ## Provide DNS resolution to local untrusted hosts. | |
60 | for p in tcp udp; do | |
61 | run iptables -A inbound -j ACCEPT \ | |
62 | -s 172.29.198.0/24 \ | |
63 | -p $p --destination-port $port_dns | |
64 | done | |
65 | ||
a3972fea MW |
66 | ## Provide syslog for evolution. |
67 | run iptables -A inbound -j ACCEPT \ | |
68 | -s 172.29.198.2 \ | |
69 | -p udp --destination-port $port_syslog | |
70 | ||
bfdc045d MW |
71 | ## Other interesting things. |
72 | dnsresolver inbound | |
bfdc045d | 73 | |
b44f4404 MW |
74 | ## IPv6 6-in-4 tunnel. |
75 | run iptables -A inbound -j ACCEPT \ | |
76 | -p $proto_ipv6 -s 216.66.80.26 | |
77 | ||
27ca7c0e MW |
78 | ## NAT for RFC1918 addresses. |
79 | for i in PREROUTING OUTPUT POSTROUTING; do | |
80 | run iptables -t nat -P $i ACCEPT 2>/dev/null || : | |
81 | run iptables -t nat -F $i 2>/dev/null || : | |
82 | done | |
83 | run iptables -t nat -F | |
84 | run iptables -t nat -X | |
85 | ||
86 | run iptables -t nat -N outbound | |
87 | run iptables -t nat -A outbound -j RETURN ! -o $if_dmz | |
88 | run iptables -t nat -A outbound -j RETURN ! -s 172.29.198.0/23 | |
89 | run iptables -t nat -A outbound -j RETURN -d 62.49.204.144/28 | |
90 | run iptables -t nat -A outbound -j RETURN -d 172.29.198.0/23 | |
91 | run iptables -t nat -A outbound -j SNAT --to-source 62.49.204.158 | |
92 | run iptables -t nat -A POSTROUTING -j outbound | |
93 | ||
bfdc045d MW |
94 | m4_divert(-1) |
95 | ###----- That's all, folks -------------------------------------------------- |