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