From: Raphael Jacquot <raphael.jacquot@imag.fr>
To: Jose Maria Lopez <jkerouac@bgsec.com>, netfilter@lists.netfilter.org
Subject: Re: what protocols need UDP instead of just TCP?? DNS, IMAP, SSH, etc.?
Date: Wed, 26 Jan 2005 14:30:02 +0100 [thread overview]
Message-ID: <41F79B5A.8010200@imag.fr> (raw)
In-Reply-To: <1106737232.14109.17.camel@nostromo.bgsecm.com>
Jose Maria Lopez wrote:
> El mié, 26 de 01 de 2005 a las 01:05, seberino@spawar.navy.mil escribió:
>
>>I'm only allowing TCP out of my firewall.
>>
>>What apps/protocls need UDP?
>>
>>DNS, IMAP, SSH, etc.?
all the mbone protocols, such as RTP and friends
> DNS needs UDP for sure.
>
>
>>I dunno if I need to allow UDP for anything.
>
>
> Just for DNS if you don't have more protocols like NFS or the
> like that use the UDP.
>
> Make a lsof -i and look at the daemons you have and if they
> are listening to UDP or TCP ports, or consult the /etc/services
> list to know if your services need UDP or not.
>
>
>>chris
>
>
> Regards.
>
next prev parent reply other threads:[~2005-01-26 13:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-26 0:05 what protocols need UDP instead of just TCP?? DNS, IMAP, SSH, etc.? seberino
2005-01-26 13:29 ` Jose Maria Lopez
2005-01-26 13:30 ` Raphael Jacquot [this message]
2005-01-26 18:47 ` Jason Opperisano
2005-01-28 17:45 ` Mohd. Jeffry
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