mdw@git.distorted.org.uk Git - firewall/blob - radius.m4

   1 ### -*-sh-*-
   2 ###
   3 ### Firewall configuration for radius
   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 ###--------------------------------------------------------------------------
  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 ###--------------------------------------------------------------------------
  32 ### Network interfaces.
  33
  34 m4_divert(44)m4_dnl
  35 ## Interface definitions.
  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
  44
  45 m4_divert(-1)
  46 ###--------------------------------------------------------------------------
  47 ### radius-specific rules.
  48
  49 m4_divert(82)m4_dnl
  50 ## Externally visible services.
  51 allowservices inbound tcp \
  52         ident \
  53         dns iodine \
  54         ssh
  55 allowservices inbound udp \
  56         dns iodine \
  57         tripe
  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
  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
  71 ## Other interesting things.
  72 dnsresolver inbound
  73
  74 ## IPv6 6-in-4 tunnel.
  75 run iptables -A inbound -j ACCEPT \
  76         -p $proto_ipv6 -s 216.66.80.26
  77
  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
  94 m4_divert(-1)
  95 ###----- That's all, folks --------------------------------------------------