Overhaul address classification.

[firewall] / radius.m4

diff --git a/radius.m4 b/radius.m4
index b97f481..72a8e1f 100644 (file)
--- a/radius.m4
+++ b/radius.m4
@@ -22,24 +22,19 @@
 ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 ###--------------------------------------------------------------------------
-### Network interfaces.
+### Config settings.
 
-m4_divert(44)m4_dnl
-## Interface definitions.
-if_untrusted=eth1
-if_trusted=eth0
-if_vpn=eth0
-if_iodine=eth0
-if_its_mz=eth0
-if_its_pi=eth0
+## This router is involved in a routing asymmetry.
+setconf(rp_filter, 0)
+setconf(log_martians, 0)
 
-m4_divert(-1)
 ###--------------------------------------------------------------------------
 ### radius-specific rules.
 
-m4_divert(82)m4_dnl
+m4_divert(84)m4_dnl
 ## Externally visible services.
 allowservices inbound tcp \
+       ident \
        dns iodine \
        ssh
 allowservices inbound udp \
@@ -60,7 +55,26 @@ run iptables -A inbound -j ACCEPT \
 
 ## Other interesting things.
 dnsresolver inbound
-ntpclient inbound 158.152.1.76 158.152.1.204 194.159.253.2
+
+## IPv6 6-in-4 tunnel.
+run iptables -A inbound -j ACCEPT \
+       -p $proto_ipv6 -s 216.66.80.26
+
+## 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 --------------------------------------------------