The wiki should now be completely updated for 4.0. Please let us know if there are any inconsistencies.
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Ensuring direct connection
1
Open Radmin
2
Open the server host's connection properties
Right-click the server host in Radmin and click Properties.
3
Validate channel type
Validate that the Channel type is TCP/out or UDP/out. This mean you have a direct connection to this peer.
If you see TCP/relay, then the communication is relayed through Radmin's servers. The performance will be severely degraded. Try disabling any firewall and/or antivirus in your system and reconnect to the network in Radmin.
You can play with TCP/relay, but expect lag. You have been warned.