[Himmler]

Here is how to exactly password a server (xxxx is the password):

rcon password xxxx

then press enter and type this:

rcon set sv_privatepassword xxxx

Ever since i have been running my server (1 year) those are the 2 commands i do to password it. After it is passworded, type:

rcon restart

then the password will take effect.

For someone to connect to the server type:

password xxxx

After they have typed password xxxx press enter and type:

reconnect

Then press enter and you will connect to the server.

This will work, so have fun.