In order to connect to different services RACE RESULT 12 uses different ports for different applications.

It is common for free public wifi service providers to block all traffic on TCP ports except port 80 (HTTP), some routers may also block this by default, so you may need to make an exception in your network's firewall settings.

TCP Port 1023

Used by the RACE RESULT Web Server to check-out and check-in files from the events server, additionally for online forwarding.

Error: Connection to server could not be established.

UDP Port 3601

Used by the RACE RESULT Web Server to automatically detect RACE RESULT systems on the local network. 

Error: Systems are not listed automatically in the Timing tab