I have a QNAP NAS server, and installed aMule on it. All aMule ports were default.
At the beginning, the QNAP was at my office, which had a Netgear SRX firewall as Internet router. I enabled port forward in the firewall, and aMule got high-id.
Then I moved the QNAP to my home. The internet router is NETGEAR WNDR3800 which installed OpenWRT 15.05. I also enabled port forward, but this time the aMule only got low-id.
Except enable port forward, is there any other operation need to do?