Date: Tue, 12 Nov 2002 16:01:58 +0100 From: Mark <admin@asarian-host.net> To: "Matthew Seaman" <m.seaman@infracaninophile.co.uk>, <freebsd-questions@freebsd.org> Subject: Re: ipfw matching (revisited) Message-ID: <200211121502.GACF22S85449@asarian-host.net> References: <200211121238.GACCCMS56521@asarian-host.net> <200211121406.GACE6KS72014@asarian-host.net> <20021112144522.GG16105@happy-idiot-talk.infracaninophi>
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----- Original Message ----- From: "Matthew Seaman" <m.seaman@infracaninophile.co.uk> To: <freebsd-questions@FreeBSD.ORG> Sent: Tuesday, November 12, 2002 3:45 PM Subject: Re: ipfw matching (revisited) > On Tue, Nov 12, 2002 at 03:06:42PM +0100, Mark wrote: > > Ok, I constructed the following IP:mask for ipfw to match: > > > > 202.43.64.0:255.255.191.0 > > > > This is supposed to match the range 202.43.64.xx to > > 202.43.127.xx > > Close, but no cigar. You want: > > 202.43.64.0:255.255.192.0 also known as 202.43.64.0/18 > ^ > > That matches the addresses from 202.43.64.0 to 202.43.127.255 > inclusive. Thanks for the explanation. Yes, 191 (10111111) would only have bit 6 variable; indeed, I needed 192 (11000000), to keep the lower 6 bits variable. It is clear to me now. Good thing I asked! :) - Mark To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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