classify.m4: Explicitly class 255.255.255.255 as broadcast.

[firewall] / fender.m4

diff --git a/fender.m4 b/fender.m4
index f1d84d8..77a08fe 100644 (file)
--- a/fender.m4
+++ b/fender.m4
@@ -34,12 +34,8 @@ allowservices inbound tcp \
 ntpclient inbound $ntp_servers
 
 ## Provide NTP service to untrusted clients.
-iptables -A inbound -p udp -j ACCEPT \
-       --source-port 123 --destination-port 123 \
-       -s 172.29.198.0/23
-ip6tables -A inbound -p udp -j ACCEPT \
-       --source-port 123 --destination-port 123 \
-       -s 2001:470:9740::/48
+run ip46tables -A inbound-untrusted -p udp -j ACCEPT \
+         --source-port 123 --destination-port 123
 
 ## Guaranteed black hole.  Put this at the very front of the chain.
 run iptables -I INPUT -d 212.13.198.78 -j DROP