Date: Tue, 23 Dec 2003 11:45:44 -0800 From: Chris Pressey <cpressey@catseye.mine.nu> To: Dave McCammon <davemac11@yahoo.com> Cc: questions@freebsd.org Subject: Re: grep, netstat, and bridging Message-ID: <20031223114544.73cd41b2.cpressey@catseye.mine.nu> In-Reply-To: <20031223161953.18632.qmail@web41414.mail.yahoo.com> References: <20031223161953.18632.qmail@web41414.mail.yahoo.com>
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On Tue, 23 Dec 2003 08:19:53 -0800 (PST) Dave McCammon <davemac11@yahoo.com> wrote: > I this a feature, bug, or just some logical thing that > grep does( or perhaps netstat)? > > Scenario: > > IP addresses > comp1=xx.xx.xx.1 > comp2=xx.xx.xx.6 > comp3=xx.xx.xx.12 > > comp1 and comp3 run FBSD 4.9 stable > comp2 runs FBSD 5.1-RELEASE > > comp1 is a bridging firewall using ipfw > > A: comp2# netstat -n |grep xx.xx.xx.1 > > tcp4 0 0 xx.xx.xx.6.54953 xx.xx.xx.12.3551 TIME_WAIT > tcp4 0 0 xx.xx.xx.6.54952 xx.xx.xx.12.3551 TIME_WAIT > tcp4 0 0 xx.xx.xx.6.22 xx.xx.xx.1.1233 > ESTABLISHED > > > B: comp2# netstat -n |grep xx.xx.xx.1. > > tcp4 0 0 xx.xx.xx.6.54954 xx.xx.xx.12.3551 TIME_WAIT > tcp4 0 0 xx.xx.xx.6.54953 xx.xx.xx.12.3551 TIME_WAIT > tcp4 0 0 xx.xx.xx.6.22 xx.xx.xx.1.1233 > ESTABLISHED > > > C: comp2# netstat -n |grep xx.xx.xx.12 > > tcp4 0 0 xx.xx.xx.6.54957 xx.xx.xx.12.3551 TIME_WAIT > tcp4 0 0 xx.xx.xx.6.54956 xx.xx.xx.12.3551 TIME_WAIT > > > Actually..I see the same output on a cygwin machine > behind the comp1 firewall. >From the grep(1) man page: The period . matches any single character. Try fgrep(1) (or grep -F) instead and see if that helps? -Chris
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