Do I need to configure firewalls to use NTRsupport?
NTRsupport does not typically require any firewall configuration by any of the parties involved. However, if you use the standalone program (a .exe file) to connect when using Microsoft Windows XP, you may have to unblock access to the NTRsupport program. You may also need to open ports 21, 25, 80, 110, 443, and 11438.