mysql database in another computer

Hi
I tried install Firewall Analyser, it works fine but I would like to change mysql server to my dedicated mysql server in another computer.
I created database name firewall, privilege, tested connection to server 'mysql -p -u root ip firewall'; then changed file mysql-ds.xml, but Firewall Analyser doesn't work - Unable to start MySQL server on port 3306. Please free the port...
I read forum and found to try disable start DB server in file nms-service.xml.
I tried it, but Firewall Analyser doesn't work.. ServerContainer [FAILED]

Could you help me how can i change mysql database server location, I tried another product (netflow, eventlog ..) and anyone installed your own database server :(
Thank you for answer
Tibor