Port 113 and Bind

Mark.Andrews at nominum.com Mark.Andrews at nominum.com
Wed May 23 03:21:13 UTC 2001


> 
> Hi guys.. Do i need oirt 113  Ident open if I am running  a mail/web
> server? This is what GRC says about it
> 
> "Identification/Authorization Service — Internet servers such as POP,
> IMAP, SMTP, and IRC query this port in response to client
> connections."
> 
> So, according to the above, it gotto stay open right? Some people say
> it can be closed without affecting your DNS, Mail, Web servers, while
> others says it got to be open. 
> 
> 
> thanks 
> 
> 

	The IDENT port is not required.  However it is useful to
	ensure that RST gets returned and you don't just drop
	the connection establishment requests.  If you don't do
	this you have to wait for the tcp connect to timeout.

	Mark
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com


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