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RE: Blocking port 135?
From: "Jason Robertson" <jason () ifuture com>
Date: Fri, 01 Aug 2003 15:44:21 -0400


I also would recommend blocking these outbound, if they are not.  
Especially 137, it's so useful in finding Windows machines on other 
networks.

On 1 Aug 2003 at 14:09, Adi Linden wrote:

Date sent:              Fri, 1 Aug 2003 14:09:52 -0500 (CDT)
From:                   Adi Linden <adil () adis on ca>
To:                     Bob German <bobgerman () irides com>
Copies to:              nanog () merit edu
Subject:                RE: Blocking port 135?


Absolutely.  All of the NetBIOS ports: 135, 137, 138, 139, 445.  

Ports 137, 138, 139, 445 have been blocked for a long time. But port 135 
wasn't until today...

Thanks!
Adi





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