Having never heard of this, I went for a Google-hunt... do you mean
something like this?:
I don't think that m0n0wall supports this at the moment, but could get
proven so very, very wrong!
Logsys Support, Leeds
+44 (0)113 384 0400 - ext 411
markj at logsysgroup dot com
From: Mark Gilbert [mailto:mgilbert at marinhd dot com]
Sent: 29 June 2006 03:44
To: m0n0wall at lists dot m0n0 dot ch
Subject: Object tracking
I was wondering if someone knows of an open source free router product
which can do object tracking. Object tracking tracks to ip's and
depending if one becomes unavailable it will dynamically change the
routing to another path. I am assuming this is not possible with
M0n0wall but would be delighted if it were possible.