Resolving Common Problems
extract from
http://support.raidersoft.com/resolve.html
6. I am using a computer behind a firewall, or in a work/education environment. How can I connect?
For SigmaChat, you, or your network administrator, will need to allow TCP access on ports 8000 through 8009 at client.sigmachat.com. On some LAN firewalls, you may simply set the security setting to "Low" while you wish to use our chat software.
For ICE and RaiderCSS, you, or your network administrator, will need to allow TCP access on ports 45000 through 45199 at css.raidersoft.com and ice.raidersoft.com (respectively). On some LAN firewalls, you may simply set the security setting to "Low" while you wish to use our chat software.