I use remote desktop to connect to my work machine over a company VPN. I am having some difficulties keeping a connection for anything more than a brief period of time. It will always last about 10 minutes, and occasionally almost 20 minutes, but it usually freezes after about 15 minutes. The VPN does not disconnect, but the remote desktop becomes unresponsive (grays out) and I can no longer access any network resources. If I disconnect and reconnect the VPN the remote desktop connection will resume successfully. I've seen a few posts on here suggesting the culprit might be the DHCP lease time, but I don't have control over any of the company VPN settings.
Local machine: Windows XP, Toshiba cable modem, Linksys Router, Windows firewall disabled
Remote machine: Windows XP, Windows firewall disabled
Company VPN: I'm pretty sure it's Cisco based