Re: filtering NetBIOS Explorers

From: tom cheung (tkc9789@xxxxxxxxxxx)
Date: Tue Sep 11 2001 - 08:58:17 GMT-3

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Fred,
The following link may be useful to you:
http://www.cisco.com/warp/public/697/dlswfilter.shtml

Tom

>From: "Fred Danson" <fred190044@hotmail.com>
>Reply-To: "Fred Danson" <fred190044@hotmail.com>
>To: ccielab@groupstudy.com
>Subject: filtering NetBIOS Explorers
>Date: Tue, 11 Sep 2001 02:22:13 -0400
>
>Hey Group,
>
>I'm currently running through IPexpert lab 20-5 and am tasked to "Prevent
>NetBIOS explorer packets from R1 Ring 1 from entering Ring 2".
>
>Since explorer frames are terminated at each DLSW peer, is it even possible
>to filter NetBIOS explorer packets? Aren't NetBIOS explorer packets
>converted into DLSW CAN_U_REACH packets?
>
>If it is possible, what is the correct LSAP/DSAP combination to filter?
>
>Thanks in advance,
>Fred
>

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