IP Tables problem

[Ronald I. Nutter]

I am setting up a RHEL 3 box to take the place of one of our DNS
servers.  Everything works ok until I bring up Iptables.  I used
redhat-config-securitylevel to setup the rules.  Here is what I am
currently using -

# Firewall configuration written by redhat-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 53 -j
ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j
ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT

I can SSH and do DNS lookups against the server without the rules in
place.  With the rules in place, I can only SSH to the server.  NSLOOKUP
starts reporting DNS timeouts.  This is a single nic system.  I am new
to iptables, so I had hoped this would get things running easier than my
trying to piece things together.

Suggestions ?

Ron
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Ron Nutter                          ron_nutter at georgetowncollege.edu 
Network Manager
Information Technology Services                        (502)863-7002
Georgetown College                                     
Georgetown, KY                                            40324-1696
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