For the WinMX P2P file-sharing system system to work at its best, you must arrange for incoming TCP connections on port 6699, and incoming UDP connections on port 6257, to be accepted. With a NAT router, you must port-forward TCP port 6699 and UDP port 6257 to the local PC that is running the WinMX P2P application. With a firewall, you must configure the firewall to permit incoming connections from anywhere in the world to the local TCP port 6699 and UDP port 6257, or grant Server rights to WinMX. If you are unable to open these ports, you can configure WinMX to cope with that.
To configure WinMX:
Pull down the Settings menu and select Connection.
In the pull-down box Connection Speed, select the speed which is next below your cable modem upload rate cap. For instance:
on the NTL 600kbps service (128kbps upload) you would select 64K ISDN
on the NTL 128kbps service (64kbps upload) you would select 56K Modem
on the Blueyonder service (128kbps upload) you would select 64K ISDN.
Click button Filewall/Network Settings.
If you had been able to open TCP port 6699 through any firewall or NAT routers (or if you have no firewalls or NAT routers), then check Listen on port 6699.
If you had not been able to open TCP port 6699, then check Unable to accept incoming connections.
Click OK to close Network Settings.
Click OK to close Connection Settings.