I've been pretty impressed with the logmein ability to work even in very locked down environments, corporate customers, education customers, etc. Of course, one has to be ABLE to INSTALL at the admin level for the machine, but this is true of anything. Once that is done, the logmein client AND server install work very well. I did a little bit of research a few years ago on this as I was SHOCKED that it really did simply work. It appears that the protocol is nothing more than a 256K secured HTTPS protocol (very similar to what one would have doing online banking, or buying a ticket online.) So, from a protocol going out over and in through the firewall, the protocol should not be blocked. A company CAN block the secure server trigger, which has to ping logmein.com, but as someone reported up above, if you can login to the logmein website, you can most likely have the server authentication work too.