Date: Wed, 29 Jul 1998 13:04:42 +1000 From: Andrew Cagney <cagney@tpgi.com.au> To: freebsd-questions@FreeBSD.ORG Cc: freebsd-security@FreeBSD.ORG, cagney@tpgi.com.au Subject: IPFW rules applied twice? Message-ID: <35BE914A.A946F57D@tpgi.com.au>
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Hello, Given a network arramgement physically wired as: FIREWALL <-ppp0-internet-... <-vx0-ethernet-vx0-> LOCALMC (for what of a better notation). Then a packet from the internet destined for LOCALMC takes the path: INTERNET -> ppp0 interface -> FIREWALL route tables -> vx0 interface -> ethernet -> vx0/LOCALMC My question: Do the IPFW rules get applied twice? o when the packet comes IN on the ppp0 interface. o when the packet goes OUT on the vx0 interface. I think they do (as they should). The problem is, I can't find anything in the IPFW documentation that confirms this. Can someone confirm that this firewall is `normal'? :-) Did I miss something in the doco? If I didn't, should something be added? enjoy, Andrew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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