Here is the output of an "iptables-save":
# Generated by iptables-save v1.4.4 on Sun Nov 21 11:28:56 2010
*mangle
:PREROUTING ACCEPT [921:116690]
:INPUT ACCEPT [921:116690]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [856:343403]
:POSTROUTING ACCEPT [856:343403]
COMMIT
# Completed on Sun Nov 21 11:28:56 2010
# Generated by iptables-save v1.4.4 on Sun Nov 21 11:28:56 2010
*nat
:PREROUTING ACCEPT [18:1076]
:POSTROUTING ACCEPT [189:12510]
:OUTPUT ACCEPT [189:12510]
COMMIT
# Completed on Sun Nov 21 11:28:56 2010
# Generated by iptables-save v1.4.4 on Sun Nov 21 11:28:56 2010
*filter
:INPUT DROP [188:58400]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [856:343403]
-A INPUT -p icmp -j ACCEPT
-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -p udp -m udp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p udp -m udp --dport 80 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 53 -j ACCEPT
-A INPUT -p udp -m udp --dport 53 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
-A INPUT -p udp -m udp --dport 443 -j ACCEPT
COMMIT
# Completed on Sun Nov 21 11:2
The server hosts my bind server which is serving as the authoritative nameserver for the particular domain in question. The server also hosts the site itself. What could cause this slowdown when activating iptables rules with these ports open? Am I missing some ports that should allow dns to work correctly?