Let me begin by describing this (weird?) network configuration...
Two organizations sharing an office: one has a large network with Win2k3 Server Domain Controller, which seems to intercept inbound RDP connections.
My small organization has our PCs and a Win2k Server Domain Controller connected to their network, though we do not use any of the resources of their Server or Domain, except -- the way I understand it -- our PCs gateway to Internet via their router. (We manually assign our own IPs which has recently been the cause of other problems... Suddenly there was an IP conflict and our small "sub-network" stopped working properly until I changed one of our machine's IPs to some new unused IP.)
Recently our gracious hosts made some changes/upgrades to their net somehow and now one of our users who previously was able to RDC to his workstation from outside the office, cannot.
It's a strange situation but basically it seems that it is really bad etiquette for us to actually bother their IT support staff in any way with these problems -- I am allowed to ask like 1 question a year and I already hit this year's quota! ;) And to ask them to make a change on our behalf is just a major faux pas to the point of being out of the question! So I am left to try and figure this out "from the inside", with limited capabilities.
To make it slightly trickier, I have only remote access to our server for which I am using LogMeIn. I can't even RDP to a workstation from that desktop for some weird reason. (which is another issue I am trying to troubleshoot and related to my first post.)
I don't care if I have to reconfigure everything from scratch.... Any info or pointers to site/page which can help me get this sorted and set-up properly functioning?? Is it even possible to do so without some sort of intervention on the part of the gateway network admins?