eMule FAQ

eMule will only work fully if the ports you have defined in the Options -> Connection screen are reachable from outside your computer. By default these are:

* 4662 TCP (Server connection)
* 4672 UDP (Kademlia)
* 4711 TCP (Webinterface)

There are several possible causes for these to be blocked:
* Firewalls - also the built in of Windows XP. (WinXP SP2 enables it by default!)
* Routers
* Dail-In software of some ISPs
* Connection sharing software / Software routers
* Networks with any form of NATed connection
* Ports blocks by the Internet Service Provider

Check your used software and hardware for any firewall or routing functions and configure it properly to allow incoming connections to the mentioned ports. You can also instruct eMule to use non-default ports, such as 6666, 80 or 20, which are normally used for other applications and are therefor likely to be allowed through.