Hello all! I am having a major issue that I'm hoping you can shed light
on. We recently added an MPLS link from our location to our other company
offices (replacing a pfsense VPN tunnel that was working great) and am now
having issues across it. The MPLS is hooked to a cisco router sitting behind
our pfsense firewall, and I setup a static route on pfsense over to it for the
appropriate subnet. This seemed to work fine, but after using it a bit it
seems that traffic is getting stalled somewhere. If I setup a static route on
my desktop machine (client machine on network) to the cisco (for the
appropriate subnet) everything works perfectly. So it seems something is
happening on the pfsense machine. Shorter transactions seem to be fine,
pinging always works. Outlook however is very unhappy (consequently so are the
users...). In general it seems that TCP services being effected most.
I did a packet capture with and without the static route on my client
machine. With all the traffic going through the pfsense there were a lot of
TCP retransmissions happening.
Could this be an issue with pfsense's packet scrubbing? There is nothing
in the firewall logs to indicate that anything is being blocked. I am using
1.2RC2.
If anyone has any ideas I would be very appreciative. I think the users
are starting to gather torches and pitchforks...
James
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