>> > > Have you any experience/commendation for a proxy and/or a firewall
>> > > - software and
>> > > - the machine hardware
>> > > which runs NetBSD? The users are about 400.
>> > if you are asking about "firewall software" for NetBSD you probably don't
>> > know what you are talking about.
>> 
>> What?  Why do you say that?
>> 
>> NetBSD has ipf(8), which provides the functionality of most of the
>
>exactly because of that i've said it. there is no need of special
>"firewall software" as it's standard part of system

Remember that a firewall is not necessary (only) based on IP filter.

pc