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Date:      19 Jan 2005 18:36:50 GMT
From:      Rudolf Polzer <divzero@gmail.com>
To:        muc-lists-freebsd-security@moderators.muc.de
Subject:   Re: ipf question
Message-ID:  <slrncuta62.tj6.divzero@message-id.durchnull.ath.cx>
References:  <6BBE5C5603D0D611A06F0002A5D6556405FAA185@nyschx22psge.sch.ge.com> <20050119180131.GL19851@techometer.net>

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["Followup-To:" header set to muc.lists.freebsd.security.]
»Erick Mechler« <emechler@techometer.net> wrote:
> :: pass in quick on xl0 proto tcp/udp from any to any port 137 <> 139 keep
> :: state
> 
> This line allows in all tcp and udp ports less than 137 and greater than 
> 139, which is exactly what you don't want :)  If you want to allow all 
> ports 137-139 inclusive, you need to change it to
> 
>   ... port 136 >< 140 keep state
> 
> The < and > operators are not inclusive.

I know it has been defined like that. But why?

Why wasn't an inclusive .. operator used? There must be a reason for this, but
which one is it?



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