Well guys here I bring a small application with which we can find our protocol version of the system, as well as the program is also a writer in Visual Basic 2008.
How to Use:
1º Well first of all copy the file to our system folder.
2º Ok one once we have completed that run our. Exe and we request a password placed there "brotherhood" without quotes.
3º Well once we have done that our result will be the following as you can see in my caption under my protocol is 146.
Yeah, I wouldn't trust this, as you can just launch l2.exe with a command from the CMD to show the protocol.Absolutely no need for a 3rd party app to do such a thing.