X-Git-Url: https://git.distorted.org.uk/~mdw/firewall/blobdiff_plain/8506ff83e7ea0db6fc8f7d56d702730d75f38fb6..4782bcca1b8384b95c5ab84e36110ad2ffdba4dc:/radius.m4

diff --git a/radius.m4 b/radius.m4
index 2d5f8aa..090249c 100644
--- a/radius.m4
+++ b/radius.m4
@@ -57,6 +57,12 @@ iptables -A fwd-spec-nofrag -j ACCEPT \
 	-m mark --mark $from_untrusted/$MASK_FROM \
 	-m state --state ESTABLISHED
 
+## BCP38 filtering.  Note that addresses here are seen before NAT is applied.
+bcp38 4 ppp0 62.49.204.144/28 172.29.198.0/23
+bcp38 6 t6-he \
+	2001:470:1f08:1b98::2 2001:470:1f09:1b98::/64 \
+	2001:470:9740::/48
+
 ## NAT for RFC1918 addresses.
 for i in PREROUTING OUTPUT POSTROUTING; do
   run iptables -t nat -P $i ACCEPT 2>/dev/null || :
@@ -88,7 +94,10 @@ for p in ftp sip h323; do
   run modprobe nf_nat_$p
 done
 
-## Forbid anything complicated to the NAT address.
+## 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)