Re: pop3 and dns

[Ray Leach <raymondl@knowledgefactory.co.za>]

[-- Attachment #1: Type: text/plain, Size: 2751 bytes --]

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@overturemedia.com>
> > To: "Netfilter Mailing List (E-mail)" <netfilter@lists.netfilter.org>
> > 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
> > 
> > 
> > 
> > ----------------------------------------------------------------------
> > This email and any files transmitted with it are confidential and
> > intended solely for the use of the individual or entity to whom they
> > are addressed. If you have received this email in error please notify
> > the sender immediately by e-mail and delete this e-mail from your
> > system. Please note that any views or opinions presented in this
> > email are solely those of the author and do not necessarily represent
> > those of the company. Finally, the recipient should check this email
> > and any attachments for the presence of viruses. The company accepts
> > no liability for any damage caused by any virus transmitted by this
> > email.
> > 
> > Overture Media, Inc.
> > Direct Line: (632) 635-4785
> > Trunkline:   (632) 631-8971 Local 146
> > Fax: (632) 637-2206
> > Level 1 Summit Media Offices, Robinsons Galleria EDSA Cor. Ortigas Ave.,
> > Quezon City 1100
> > 
> > 
> > 
> > 
> > 
-- 
--
Raymond Leach <raymondl@knowledgefactory.co.za>
Network Support Specialist
http://www.knowledgefactory.co.za
"lynx -source http://www.rchq.co.za/raymondl.asc | gpg --import"
Key fingerprint = 7209 A695 9EE0 E971 A9AD  00EE 8757 EE47 F06F FB28
--

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]