Re: pop3 and dns

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On Wed, 2004-05-12 at 06:22, Alexander Samad wrote:
> On Tue, May 11, 2004 at 10:37:36AM -0300, Peter Marshall wrote:
> > I have an aside question ... Do you need to listen on both tcp and udp port
> > 53 for DNS ?  Can you just listen on the UDP one ?  Does it require both ?
> > 
> 
> udp for normal requests
> tcp for zone transfers

and large answers ...

> 
> A
> 
> > Thank you,
> > 
> > Peter Marshall
> > 
> > 
> > ----- Original Message ----- 
> > From: "Fritz Mesedilla" <fritz.mesedilla@xxxxxxxxxxxxxxxxx>
> > To: "Netfilter Mailing List (E-mail)" <netfilter@xxxxxxxxxxxxxxxxxxx>
> > Sent: Tuesday, May 04, 2004 6:40 AM
> > Subject: pop3 and dns
> > 
> > 
> > 
> > Greetings!
> > I have been looking for the answer to this through google...
> > 
> > How do I allow POP3 through my iptables rules?
> > 
> > I have done this...
> > $IPTABLES -A FORWARD -p tcp --dport 53 -j ACCEPT
> > $IPTABLES -A FORWARD -p udp --dport 53 -j ACCEPT
> > 
> > $IPTABLES -A FORWARD -p tcp --dport 110 -j ACCEPT
> > 
> > I included the dns forward rule to allow the internal clients to be able to
> > resolve pop3 domain names.
> > 
> > The problems:
> > 1) They still can't resolve domain names.
> > 2) POP3 can't seem to pass through going outside from the internal clients.
> > 
> > Please advise me to what I still need to add. Thanks.
> > 
> > Cheers,
> > 
> > fritz <www.mesedilla.com>
> > ---
> > + Basta Ikaw Lord
> > 
> > 
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-- 
--
Raymond Leach <raymondl@xxxxxxxxxxxxxxxxxxxxxx>
Network Support Specialist
http://www.knowledgefactory.co.za
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