On using a Sun3 as a firewall-
The first thought that comes to mind is to use the Sun 3 as a doorstop
and instead use a 386 or 486 PC running BSDI. A non-source license for
BSDI for a small company is cheap! Even cheaper are the ubiquitous
Linux, and {Free, Net}BSD.
With that aside, I believe a Sun 3 has the horsepower to flood a
14.4k or 28.8k line (:-) (I assume such rates because you said a
PPP connection). You just cannot do enough with that bandwidth
to tax a Sun 3.
I am not familiar with the current state of Sun support for Sun 3's.
I have my reservations about old Sun code in general. It has been
well reviewed by the dark side of the Internet...
I will share with you my standard rant on firewall systems:
run as few services as possible
Offhand I'd guess you would want:
sendmail (current version as you said)
telnetd (possibly built from the latest BSD source)
xntpd (if you are anal about time as we are)
inetd (possibly a new one?)
Keep it simple and keep it safe.
Quentin
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