Re: Berkeley Packet Filter for Sun's

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From: Stew Ellis
Date: Tue, 29 Dec 1992 14:45

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dclunie@pax.tpa.com.au (David Clunie) writes:

>I am interested in implementing a filter for controlling the flow
>of certain tcpip packets based on source/destination, protocol and
>possibly process/user of origin.

>I gather from peeking at tcpdump that there is such a thing as the
>"Berkeley Packet Filter" mechanism that can be implemented in SunOS 4.1x
>if one has a source license which I don't :(

>Is there anyone who has done this that could let me have the object
>of the appropriately modified modules ?

>I am presupposing of course that BPF will be of some use to me, in the
>sense that it will allow me to selectively filter packets, rather than
>just peek at them !

>Thanks ... david

Check out Weitse Venema's tcp/ip wrappers.  They are archived on many sites,
but the best place to check for them is cert.org.  They work only with tcp
and not with udp.

--
                                                          ___________________
  R.Stewart(Stew) Ellis, Assoc.Prof., (Off)313-762-9765  /   _____  ______ 
  Humanities & Social Science,  GMI Eng.& Mgmt. Inst.   /        / /  /  / /
  Flint, MI 48504      ellis@nova.gmi.edu              /________/ /  /  / /

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Newsgroups: comp.protocols.tcpip,comp.sys.sun.hardware,comp.unix.solaris
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!spool.mu.edu!news.cs.indiana.edu!umn.edu!umeecs!nova!ellis
From: ellis@nova.gmi.edu (Stew Ellis)
Subject: Re: Berkeley Packet Filter for Sun's
Message-ID: <ellis.725640345@nova>
Sender: news@zip.eecs.umich.edu (Mr. News)
Organization: GMI Engineering&Management Institute, Flint, MI
References: <1hcf2jINNil@flash.pax.tpa.com.au>
Date: Tue, 29 Dec 1992 14:45:45 GMT
Lines: 28

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