Hi
Im studying the different possibilities to make a Ethernet GPO module and wold like to know what protocol the forum wold recommend.
Im not familiar with that stuf but have some experiences with some systems on the market.
So what functions wold be nice is to get a answer after i set a GPO automatically. And also to let a client subscribe on a change status. Also it wold be grate to ask for the general status of all GPOs.
Maybe i don't need to build that by my self and somebody can show me a protocol or solution or software or skript or ...? maybe? 
Best regards
novski