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- Path: sparky!uunet!think.com!barmar
- From: barmar@think.com (Barry Margolin)
- Newsgroups: comp.sys.sun.misc
- Subject: Re: Etherfind details
- Date: 22 Dec 1992 21:08:04 GMT
- Organization: Thinking Machines Corporation, Cambridge MA, USA
- Lines: 25
- Message-ID: <1h803kINNrna@early-bird.think.com>
- References: <1992Dec21.233654.12476@pacdata.uucp>
- NNTP-Posting-Host: telecaster.think.com
-
- In article <1992Dec21.233654.12476@pacdata.uucp> jimh@pacdata.com (Jim Harkins) writes:
- >Will etherfind display packets that are an invalid packet when the host option
- >is used? I'm writing a tool that writes to the network, and I'm talking
- >directly to the network via a pc. It's ethernet address is aa:55:aa:55:aa:55,
- >and I transmit a 1200 byte packet consisting of sequential bytes (00,01,02, ...,
- >fe, ff, 00, 01, etc). The first 12 bytes are my source and destination.
- >I've got a Sun3 on my test network and if I use 'etherfind greater 1000' it
- >sees the packet, but if I use 'etherfind host jimstest' it doesn't see the
- >packets. If I use my real sun to ping jimstest then etherfind sees the
- >packets.
-
- The "host" option in etherfind looks at the IP addresses, not the ethernet
- addresses. So if you're sending a raw ethernet packet rather than an IP
- packet, it's not going to match that specification.
-
- >If etherfind won't do what I want does anyone have any suggestions? Spending
- >money is out :-(, but I've got both a Sun 3 and a PC I can run software on.
-
- Get tcpdump from an FTP server. It has "ether src" and "ether dst" options
- that let you filter based on ethernet addresses.
- --
- Barry Margolin
- System Manager, Thinking Machines Corp.
-
- barmar@think.com {uunet,harvard}!think!barmar
-