Don't know if this helps, (from the aMule wiki.)
Go under Gaming applications
Now forward the ports to your computer:
Standard client TCP port
Change both Ports start and End to 4662
In the next field set TCP
In the field, the last 3 digits of your LAN IP
Extended client UDP port
Change both Ports start and End to 4672
In the next field set UDP
In the field, the last 3 digits of your LAN IP
Extended server requests UDP port
Change both Ports start and End to 4665
In the next field set UDP
In the field, the last 3 digits of your LAN IP
Now check Enable
And click Save settings
Then restart aMule