I tried to set the custom port number to 44818. But, I am unable to set the port number any higher than something like 5000. Is there a limitation on port numbers at 5000? How can the port number be set to 44818?

This is a problem with the version 2.00 firmware and has been fixed in firmware version 2.01 or newer. The latest firmware is available from our FTP site at:

https://webfiles.multitech.com//Embedded/SocketEthernetIP

You need to use TFTP to upgrade the firmware. This information is in the user guide and can be downloaded from the same ftp site.