local.m4: Reinstate detailed filtering from scary networks.

[firewall] / vampire.m4

diff --git a/vampire.m4 b/vampire.m4
index fa79ee2..e016358 100644 (file)
--- a/vampire.m4
+++ b/vampire.m4
@@ -28,7 +28,6 @@ m4_divert(86)m4_dnl
 ## Externally visible services.
 allowservices inbound tcp \
        finger ident \
-       dns iodine \
        ssh \
        smtp submission \
        gnutella_svc \
@@ -40,18 +39,18 @@ allowservices inbound tcp \
        git \
        tor_public tor_directory i2p
 allowservices inbound udp \
-       dns iodine \
        tripe \
        gnutella_svc \
        i2p
 
 ## Extend some services to local untrusted hosts.
 clearchain inbound-untrusted
-run iptables -A inbound -j inbound-untrusted \
-       -s 172.29.198.0/24
+run iptables -A inbound -j inbound-untrusted -s $net_inet_untrusted
+run ip6tables -A inbound -j inbound-untrusted -s $net_inet6_untrusted
 
 allowservices inbound-untrusted tcp \
        dns \
+       lpd \
        netbios_ssn microsoft_ds
 allowservices inbound-untrusted udp \
        dns \
@@ -68,7 +67,16 @@ run iptables -A OUTPUT -m multiport \
 
 ## Other interesting things.
 dnsresolver inbound
+dnsserver inbound
 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
+
 m4_divert(-1)
 ###----- That's all, folks --------------------------------------------------