Security Incidents mailing list archives

Increase of attempts on port 635 in last couple days


From: Jeff Lane <crash () pinehurst net>
Date: Wed, 02 Apr 2003 10:45:14 -0500

Has anyone else had an increase of scans on port 635 in the last couple days? For me the attacks started showing up on almost an hourly basis since Monday night. Here are some log snippets from portsentry:

Apr  2 20:30:40 raq1 portsentry[938]: attackalert: Connect from host: 
pool-151-204-101-103.ny325.east.verizon.net/151.204.101.103 to TCP port: 635



Apr  2 16:55:29 raq1 portsentry[938]: attackalert: Possible stealth scan from unknown host to TCP port: 635 (accept 
failed)

There are several of these from "unknown host" and a few from actual resolved hosts.  AFAIK, the only thing on 635 is 
old rpc.mountd but I wasnt sure if there was something else going on that I dont know about (theres a lot that i dont know about, 
so that would not be too surprising).

Also, I have noticed that these seem to be targeted at three specific machines, as none of the others have been 
reporting any issues regarding this port (just the normal scans, pings, and connect attempts).

Cheers
Jeff



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