My application must work on a remote computer with ports 500 and 4500 on UDP-protocol, but it doesn't work. I tried to test these ports by this udp-server. http://www.codeproject.com/Articles/11740/A-simple-UDP-time-server-and-client-for-beginners
Antivirus is switched off, Firewall too.
When I start udp-server as "timeserver 500" or as "timeserver 4500" I get message: "Could not bind name to socket". But with other ports it works. Why? (In the source code I do not see any restrictions for port-numbers.)
On my local home computer - the same behavior! Can anyone explain this?