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Date:      Thu, 2 Mar 1995 07:46:32 -0600
From:      rkw@dataplex.net (Richard Wackerbarth)
To:        Luigi Rizzo <luigi@labinfo.iet.unipi.it>
Cc:        hackers@FreeBSD.org, ugen@netvision.net.il
Subject:   Re: Playing with ipfw...
Message-ID:  <v02110102ab7b799a5340@[199.183.109.242]>

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Luigi Rizzo <luigi@labinfo.iet.unipi.it> writes:

>I have been playing with ipfw lately.
>[COMMENT] Quite often, allowing a service requires a two-line
>   specification. As an example, I am using
>
>       ipfw addf accept udp from 0/0 520 to 0/0
>       ipfw addf accept udp from 0/0 to 0/0 520
>
>    to let routing information pass to hosts in the subnet.
>
>    It would be nice to have a way to specify "one of the port
>    numbers must be XXX". Is this supported by the system calls ?

perhaps the external language could accept

"ipfw addf accept udp between 0/0 520 and 0/0"

and expand it into the two non-symetrical rules.

----
Richard Wackerbarth
rkw@dataplex.net





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