From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Opperisano Subject: Re: what protocols need UDP instead of just TCP?? DNS, IMAP, SSH, etc.? Date: Wed, 26 Jan 2005 13:47:21 -0500 Message-ID: <20050126184721.GA7134@bender.817west.com> References: <20050126000550.GB15359@spawar.navy.mil> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <20050126000550.GB15359@spawar.navy.mil> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-bounces@lists.netfilter.org Errors-To: netfilter-bounces@lists.netfilter.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: netfilter@lists.netfilter.org On Tue, Jan 25, 2005 at 04:05:50PM -0800, seberino@spawar.navy.mil wrote: > I'm only allowing TCP out of my firewall. > > What apps/protocls need UDP? > > DNS, IMAP, SSH, etc.? DNS--yes. IMAP and SSH--no. > I dunno if I need to allow UDP for anything. other common UDP ports i allow out: Port Service --------------- 123 NTP 500 IKE -j -- "I never passed Remedial Science 1A. And you're a nuclear technician?" --The Simpsons