"R0me0 ***" <[email protected]> writes:

> I'm running a full patched OpenBSD 4.4 with very complex setup, and I'm
> planning an upgrade to 5.0.

That's a seriously long jump, but then again, that upgrade may very well
be a blessing in disguise -- an opportunity to identify what parts of
your complex setup are actually just cascades of accidents that followed
quasi-logically from other earlier accidents (no worries, this should
sound familiar to most of the people who've been around for a while) and
what actually matters and needs to be that way for a reason.

Do take the time for proper preparations, though: at the very least read
through the upgrade steps for each of the versions, starting from
http://www.openbsd.org/faq/upgrade45.html and proceeding through
http://www.openbsd.org/faq/upgrade50.html.  

The only *supported* method is to go through all of those upgrade steps,
but you might find it easier to back up your data and config, do a clean
install, restore data and then introduce those configuration elements
that are in fact essential or at least useful for your particular
environment.

> At this moment, if I execute nmap 10.20.0/16, I have a dbg> . I've limited
> the number of max connections and connections per seconds, that solved the
> problem.
> When dbg occurs, I cannot do a trace because it completely hangs.

Others have offered as useful input as can be had on those.

Good luck with the upgrade!

All the best,
Peter
-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/
"Remember to set the evil bit on all malicious network traffic"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.

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