NFMWps Process listening on port 9000 ( What is this? )

I went to start a service on port 9000, but I am finding that the address is in use by what appears to be a Norton process running under the _www user.  Further investigation of the PID points to /Library/Application Support/Symantec/Silo/NFM/WebProtection/NFMWps.  I am able to use another port for my process, but I want to verify what this Norton process is.  

What is the NFMWps process? Thank you.