North American Network Operators Group

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Re: UDP port 137 Question

  • From: Dalvenjah FoxFire
  • Date: Tue Jan 06 13:59:35 1998

C. Jon Larsen put this into my mailbox:
> Is there any *valid* reason to see UDP traffic directed at a unix box's
> port 137 coming from IP sources across the internet ? The unix servers in
> question are most definitely *not* running samba, and there is absolutely
> no NT anywhere on this customer's network (that is seeing the incoming UDP
> traffic directed at an IP destination address on port 137). (A couple
> of 95 boxes scattered across an Ethernet comprise the Micro$oft part of
> the network). None of the 95 boxen are running any file or print serving
> (sharing) resources.
> I can't think of any valid reason to see this traffic, personally. Anybody
> out there that can present a scenario where I would expect to see these
> UDP packets coming back in ?

No. Doubtless some idiot thinks everybody runs WinDoze and is trying to
winnuke you, especially if several boxes get hit one after the other.
E-mail the contacts of the source address and ask that the account
be removed; chances are the person wasn't clueful enough to spoof the
source address.


 Dalvenjah FoxFire (aka Sven Nielsen) "Hath not a dude eyes? If you prick us,
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