Date: Sat, 20 Oct 2001 16:41:49 -0700 From: "Drew Tomlinson" <drew@mykitchentable.net> To: <questions@freebsd.org> Subject: OT: Generic Packet Filters? Message-ID: <005701c159c0$c9ed4e90$0301a8c0@bigdaddy>
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I'm hoping someone on this list will share his/her knowledge with me even though this is off-topic. :) I am trying to deny ICMP echo reply packets on my 3Com 812 ADSL modem/router. It appears that the only way to do this is to write a data filter. The fields I need to determine are offset (bytes), length (bytes), Mask (hex), and data (hex). I've found packet structure documentation for Ethernet frames but I think it might be different for PPPoA which is what my ADSL provider is using. Can anyone recommend URLs or a simple way to calculate what the offset should be for PPPoA? Any help will be most appreciated. Thanks! Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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