XP firewall is going to pose this problem for most every application
using bandwidth. The XP firewall evaluates every packet in and out of a
host for #cough# security reasons. I have no issues on my cable modem
using remote desktop to several machines at a time through my OpenBSD
3.8 firewall while even running bittorrent. If you see issues even with
the firewall turned off I would try to do some QOS on TCP 3389 so that
it always has a fair amount of bandwidth. Of course with the firewall
off you pose another issue of security so make sure all your AV is
patched up and possibly look for another 3rd party personal firewall as
most not made by Microsoft seem to work well.Hope that helps!
Mike Mentges
Peter wrote:
I have a user that is on WinXP. She uses Microsoft's Remote Desktop to
connect to a remote server (TCP port 3389). I have installed OpenBSD
3.8 to act as firewall for the office. She complains of serious
intermittent latency problems for this particular network usage
(internet browsing is fine and is corroborated by other office users).
I have a very simple ruleset which uses 'keep state' for all outgoing
requests. I actually keep state on all outgoing destination ports
greater than 1024 (intended initially for passive FTP).
Now I recalled XP's pseudo-firewall that is enabled by default and ever
since turning it off she has not experienced any more slowdowns.
Since I have yet to be alerted when the problem occurs I have not been
able to capture any pertinent traffic.
I am wondering whether the XP firewall could be to blame and why? Or
is it just a coincidence and the latency is going to happen again in
which case I am asking people what do they think I should look at? I
have since begun making long term tcpdump captures using pflog0.
Thanks,
Peter
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