X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/firewall/blobdiff_plain/08926d25f80fecabb4ef2b3f1e63b3a361ecdb59..27ca7c0e20cf2ce3f40eeea5f3bfa936d82bec66:/radius.m4

diff --git a/radius.m4 b/radius.m4
index b2c41ed..f6c892b 100644
--- a/radius.m4
+++ b/radius.m4
@@ -70,5 +70,21 @@ run iptables -A inbound -j ACCEPT \
 ## Other interesting things.
 dnsresolver inbound
 
+## 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 $if_dmz
+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
+
 m4_divert(-1)
 ###----- That's all, folks --------------------------------------------------