Security Incidents mailing list archives
Re: UDP Port Sweep question
From: Ron <iago () valhallalegends com>
Date: Wed, 29 Dec 2004 11:05:28 -0600
I often see UDP_PORT_SWEEP hits from virus scan servers. Virus scanners will look for their clients on a udp port, and trigger the signature. We just set up a rule to ignore antivirus boxes' udp probes.
Of course, it may also be something totally different, but that's one thing that could cause it.
Billy Dodson wrote:
I monitor 3 different sensors which are continuously pounded with network reconnaissance of all types. These sensors all belong to financial institutions. One thing that jumped out at me are "UDP Port Sweeps" events from about 15 different IP addresses which all belong to either IBM or Sequent (which was bought by IBM). I see these same IP addresses doing the same thing on all three sensors. I have contacted the clients and they do not deal with IBM or Sequent in any way. Are there legitimate type traffic that would cause these events to fire? It is odd to me that I see them on all 3 sensors for 3 different companies but all happen to be in the financial industry. Thanks in advance for your input.
Current thread:
- UDP Port Sweep question Billy Dodson (Dec 28)
- Re: UDP Port Sweep question Tim (Dec 29)
- Re: UDP Port Sweep question Kyle Maxwell (Dec 29)
- Re: UDP Port Sweep question Ron (Dec 29)
- <Possible follow-ups>
- Re: UDP Port Sweep question Don Parker (Dec 29)
- RE: UDP Port Sweep question Billy Dodson (Dec 29)
- RE: UDP Port Sweep question David Gillett (Dec 29)
- Re: UDP Port Sweep question Tim (Dec 29)
- RE: UDP Port Sweep question Jack McCarthy (Dec 29)
- RE: UDP Port Sweep question Benjamin Franz (Dec 29)
- RE: UDP Port Sweep question Colby DeRodeff (Dec 29)
- Re: UDP Port Sweep question Francesca Smith (Dec 30)