Date: Tue, 24 Aug 2004 22:52:08 +0200 From: Andre Oppermann <andre@freebsd.org> To: "Christian S.J. Peron" <csjp@freebsd.org> Cc: ipfw@freebsd.org Subject: Re: Could you have a look at kern/63961 Message-ID: <412BAA78.68218D09@freebsd.org> References: <412B8799.4020808@freebsd.org> <20040824201958.GA61912@freefall.freebsd.org>
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Christian, thanks for your quick response. Could you please take over the PR and get directly in touch with the Originator. -- Andre "Christian S.J. Peron" wrote: > > Hey Andre, > > I took a quick look at the PR and I dont think this is a bug. > If you want to match setup packets for TCP connections it > does work, but only if the connection has a PCB associated with it. > For instance, outgoing setup would have a PCB associated with it, > so ipfw could match on that: > > dev0# ipfw show > 00400 1 64 count tcp from any to any dst-port 4296 setup uid csjp > > It should be noted that all the "setup" keyword does is set the > O_TCPFLAGS opcode and set the operand to TH_SYN for SYN packets. > I dont think Incoming TCP connection requests would not have a > PCB associated with it, so there is no-way that ipfw can look > up the credential associated with it. > > However the UID negation problem looks like it could be a bug > either in how ipfw(8) reports the rule or how the kernel is > processing it. In either case I will look into it. > > -- > Christian S.J. Peron > csjp@FreeBSD.ORG > FreeBSD Committer
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