ipfw's "via" rule option/match pattern

Gregory Orange gregory.orange at calorieking.com
Tue Aug 25 02:51:27 UTC 2015

On 25/08/15 05:29, andreas scherrer wrote:
>> In freebsd-questions Digest, Vol 585, Issue 3, Message: 9
>> Yes; [4] is clearly wrong in this respect.  'out via' does NOT check the
>> receive interface if the transmit interface is known.
> In summary I think it would be reasonable to advise people to *not* use
> "via" in combination with "in" or "out".
> "in via $if" => "in recv $if"
> "out via $if" => "out xmit $if"

I am particularly interested to see whether we get some consensus on 
this. I am reviewing a number of firewall configurations right at the 
moment, and look to you all for a recommendation on this issue.

> Assuming the above is correct and that I wanted to tackle the issue of
> rewriting the ipfw handbook section: how would I do that (i.e. how to
> submit a new version)?

Andreas, it appears from the handbook homepage[1] that one should 
contact the freebsd-doc@ list[2]. A quick glance at the archives 
suggests to me that changes are backed onto bugzilla[3].

I am certainly grateful for efforts spent maintaining this excellent 
handbook. The web is a rich source of helpful content, but having an 
official, curated handbook from a single source (albeit many authors) is 
even better.


[1] https://www.freebsd.org/doc/handbook/
[2] https://lists.freebsd.org/mailman/listinfo/freebsd-doc
[3] https://bugs.freebsd.org/bugzilla/

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