X-Git-Url: https://git.distorted.org.uk/~mdw/firewall/blobdiff_plain/38e85ca3b58ddcf50c7db608f5baa2fd19771f8a..HEAD:/national.m4

diff --git a/national.m4 b/national.m4
index 01551af..d7d22b1 100644
--- a/national.m4
+++ b/national.m4
@@ -33,5 +33,14 @@ allowservices inbound tcp \
 allowservices inbound udp \
 	tripe
 
+## We use public NTP servers.
+run ip46tables -A inbound -j ACCEPT \
+	-m state --state ESTABLISHED \
+	-p udp --source-port 123 --destination-port 123
+
+## Other interesting things.
+dnsresolver inbound
+dnsserver inbound
+
 m4_divert(-1)
 ###----- That's all, folks --------------------------------------------------