From: chuck gelm <chuck@gelm.net>
To: linux-newbie@vger.kernel.org
Subject: tcpdump: How do I filter 'bootp' packets?
Date: Wed, 08 Dec 2004 08:13:32 -0500 [thread overview]
Message-ID: <41B6FDFC.3070309@gelm.net> (raw)
In-Reply-To: <5.1.0.14.1.20041207220544.01f98370@celine>
Howdy:
I have cable modem access to the internet now and the download speed is
double my original DSL speed. :-) However, I am concerned about
security.
Can other cable modem subscribers see my packets?
To test this, I am trying to use tcpdump to monitor packets that my
cable modem is sending to my 'router'.
I am using these arguments:
tcpdump -i eth1 -c 9 -nt not arp and not host W.X.Y.Z > \
http://gelm.net/tcpdump.txt
(<W.X.Y.Z> == My assigned IP address)
I am still seeing many 'bootp' packets.
How do filter out 'bootp' packets with tcpdump?
Regards, Chuck
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next prev parent reply other threads:[~2004-12-08 13:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 2:26 right form for sources.list entries James Miller
2004-12-08 2:41 ` J.
2004-12-08 3:59 ` James Miller
2004-12-08 6:27 ` Ray Olszewski
2004-12-08 13:13 ` chuck gelm [this message]
2004-12-08 15:50 ` tcpdump: How do I filter 'bootp' packets? Ray Olszewski
2004-12-08 22:10 ` Jim Nelson
2004-12-08 22:56 ` chuck gelm
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