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Re: 19991214: What is the port 113 used for? (fwd)

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  • Subject: Re: 19991214: What is the port 113 used for? (fwd)
  • Date: Tue, 14 Dec 1999 14:51:38 -0700 (MST)

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================

---------- Forwarded message ----------
Date: Tue, 14 Dec 1999 14:31:03 -0700
From: Mike Schmidt <address@hidden>
To: Brian High <address@hidden>
Subject: Re: 19991214: What is the port 113 used for? (fwd)

Brian,

It's really much less information than finger would provide.  IDENT would
send only the owner of the process initiating the network connection.
Since most PC/Macs can't handle multiple simultaneous users, this does not
necessarily apply.  IDENT is mostly useful for helping debug connections to
services that allow anonymous access like the web and anonymous ftp and
occasionally useful tracking down hacking attempts.  An example from our
logfiles might look like the following where the second entry has sucessful
ident query information;

Dec 14 12:40:20 ftp.unidata wuftpd[9573]: connect from ncar.ucar.edu
Dec 14 12:40:20 ftp.unidata wuftpd[9578]: connect from address@hidden

mike

On Dec 14,  1:00pm, Brian High wrote:
> Subject: Re: 19991214: What is the port 113 used for? (fwd)
> Mike,
>
> Okay, well last night I opened up that port for LAN to WAN (Internet),
> and I still got dropped packets, so you have done a good job at explaining
> why.  Therefore I also opened up 113 for WAN to LAN access, just in case
> the client machine can fill the IDENT request.  However, most of our
> machines are Win95/98/NT4.
>
> Since last night, 7 to 8 hosts have tried to get to our LAN for these
> services.
>
> What exactly does the client tell the host, anyway?  Finger info?
>
> --Brian High
> Network Administrator
> Analytical Resources, Inc.