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Re: printer problem
From: "Don Kendrick" <don () hackertrackers net>
Date: Tue, 08 May 2001 14:47:55 -0400

Take a look at hping...you can kinda trouceroute

*********** REPLY SEPARATOR  ***********

On 5/8/01 at 9:20 AM hermit1 wrote:

I have a very odd problem.  There are people here using a remote printer,
and last week they lost access to the printer.  Of course they blamed the
firewall, but FW-1 logs show the connections going out just fine.  Doing a
telnet to the remote IP on port 515 times out.  Traceroute, ping, telnet -
all reach the destination.  We tried from home (two different ISPs) and
could not connect on port 515.

Sounds like port 151 was blocked at their end, but users from other sites
can reach that printer without trouble.  Their network person can reach
the
printer from his home ISP, and print.

My guess is that someone somewhere put a block on port 515.  Is there any
way to find such a block?  Doing traceroute on port 515 would be good.....

Thanks,
hermit1




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Don Kendrick, CNE, GCIA, CCNA, CISSP

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