MAX Connect to Server

Hello,

How to edit max connect to server from 1 ip? Current, i had 6 computer, but only 5 com. can connect, the sixth com. receive notice " server is maintenance"
Help me increasing max connect to 10 or 20 from 1ip.
Thank you

Are you using any third party firewall on the server machine?
Is it a local PC? let's say Windows 7?
Do you have any Antivirus installed that includes IP rules? (ex : Norton)

If so disable your antivirus firewall while you're playing or check any third party software your server machine has installed for clues.

You might check the above, otherwise there should be no reason why the sixth pc would get ignored by the server.