[CentOS] LDAP/iptables

Hello,

I am trying to get LDAP running. So far, the server is running but I cannot connect to port 389 or the server using webmin or phpldapadmin. It could be my ISP has blocked this port but I'm not sure. I have tried to telnet to port 389 but it is refused. All other services run fine.

I user the iptables ruleset found in the IP-Masquerade HowTo. Below is the ruleset I follow for opening ports for external access. For some reason it won't open 389.

$IPTABLES -A INPUT -i $EXTIF -m state --state NEW,ESTABLISHED,RELATED \ -p tcp -s $UNIVERSE -d $EXTIP --dport 389 -j ACCEPT

Where $EXTIF = eth0 and $EXTIP = my ipaddress

Does anyone know what I may be doing wrong?

TIA