-### -*-sh-*-
-###
-### Firewall configuration for radius
-###
-### (c) 2008 Mark Wooding
-###
-
-###----- Licensing notice ---------------------------------------------------
-###
-### This program is free software; you can redistribute it and/or modify
-### it under the terms of the GNU General Public License as published by
-### the Free Software Foundation; either version 2 of the License, or
-### (at your option) any later version.
-###
-### This program is distributed in the hope that it will be useful,
-### but WITHOUT ANY WARRANTY; without even the implied warranty of
-### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-### GNU General Public License for more details.
-###
-### You should have received a copy of the GNU General Public License
-### along with this program; if not, write to the Free Software Foundation,
-### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-###--------------------------------------------------------------------------
-### radius-specific rules.
-
-m4_divert(86)m4_dnl
-## Externally visible services.
-allowservices inbound tcp \
- ident \
- ssh
-allowservices inbound udp \
- tripe
-
-## Provide syslog for evolution.
-run iptables -A inbound -j ACCEPT \
- -s 172.29.198.2 \
- -p udp --destination-port $port_syslog
-
-## Other interesting things.
-dnsresolver inbound
-dnsserver inbound
-
-## IPv6 6-in-4 tunnel.
-run iptables -A inbound -j ACCEPT \
- -p $proto_ipv6 -s 216.66.80.26
-
-## Permitted special forwarding.
-makeset fwd-allow-http nethash || :
-iptables -A fwd-spec-nofrag -j ACCEPT \
- -m set --match-set fwd-allow-http dst \
- -p tcp --destination-port $port_http \
- -m mark --mark $to_untrusted/$MASK_TO
-iptables -A fwd-spec-nofrag -j ACCEPT \
- -m set --match-set fwd-allow-http src \
- -p tcp --destination-port $port_http \
- -m mark --mark $from_untrusted/$MASK_FROM \
- -m state --state ESTABLISHED
-
-## NAT for RFC1918 addresses.
-for i in PREROUTING OUTPUT POSTROUTING; do
- run iptables -t nat -P $i ACCEPT 2>/dev/null || :
- run iptables -t nat -F $i 2>/dev/null || :
-done
-run iptables -t nat -F
-run iptables -t nat -X
-
-run iptables -t nat -N outbound
-run iptables -t nat -A outbound -j RETURN ! -o ppp0
-run iptables -t nat -A outbound -j RETURN ! -s 172.29.198.0/23
-run iptables -t nat -A outbound -j RETURN -d 62.49.204.144/28
-run iptables -t nat -A outbound -j RETURN -d 172.29.198.0/23
-run iptables -t nat -A outbound -j SNAT --to-source 62.49.204.158
-run iptables -t nat -A POSTROUTING -j outbound
-
-## TCP MSS clamping to help given Demon's sluggish approach to fragmentation-
-## needed errors.
-run ip46tables -t mangle -A FORWARD -o ppp0 -p tcp --tcp-flags SYN,RST SYN \
- -j TCPMSS --clamp-mss-to-pmtu
-
-## Set up NAT protocol helpers. In particular, SIP needs some special
-## twiddling.
-run modprobe nf_conntrack_sip \
- ports=5060 \
- sip_direct_signalling=0 \
- sip_direct_media=0
-for p in ftp sip h323; do
- run modprobe nf_nat_$p
-done
-
-## Forbid anything complicated to the NAT address. Be sure to allow ident,
-## though.
-run iptables -A INPUT -d 62.49.204.158 -p tcp -j ACCEPT \
- -m multiport --destination-ports=113
-run iptables -A INPUT -d 62.49.204.158 ! -p icmp -j REJECT
-
-m4_divert(-1)
-###----- That's all, folks --------------------------------------------------