L2J Server

hello,

i would like to know if it is possible to read for example how many ppl are online via only having the IP of the certain server.
ofc i dont have the server database passwords, it just to give ppl the overview how many ppl are connected to server X.. i think i saw that somewhere already. would be nice if someone can share this. and best would be if it works with any chronicle server and any type of l2 server (prefered l2j).

greetings.

When you log to the server you get this information, not sure if there is a way, not using telnet or other similar way.

that means with telnet i can check it?
telnet can be used with php so that could be useful for me, any topic or description how i check it with telnet?

thanks.