Subject: Re: Service 113
From: Frashii (frashii@frashii.com)
Date: Tue Feb 12 2002 - 13:40:40 AKST
It is also used by IRC servers to identify folks from shell machines, but
has been pretty much proven to be worthless.
Marc
On Tue, 12 Feb 2002, James F. Zuelow Jr. wrote:
>
>
> ----- Original Message -----
> From: "Mike Barsalou" <mbarsalou@aidea.org>
> >
> > I believe port 113 is for ident. Is this commonly used? Is there a
> secure
> > and not secure way to handle this?
> >
> AFAIK it is only used by mail servers to verify the identity of servers
> passing them mail (i.e. you have Postfix on your LAN sending mail to your
> ISP). If you drop packets for 113, the receiving server will eventually
> time out and move on. If you deny packets for 113, the receiving server
> will see the rejection message, immediately forget about it and move on.
>
> I don't know of anyone who actually ACCEPTS ident traffic. I think the
> protocol was only useful in the ancient days when almost everyone on the net
> was trusted.
>
> Cheers,
>
> James
>
>
>
>
This archive was generated by hypermail 2a23 : Tue Feb 12 2002 - 13:40:48 AKST