Create a server. (Black Mesa)

Faced with the problem, there are only 2 servers not steam, they occasionally fall off, there are only a couple of cards and 5-8 person limit. Ka who attempts to affect the server. to change the map or remove the limit was not successful, the command from the search yielded no results.
Want to create your own server(online) and run with friends, tell me how to do it.
I'm in this business a teapot, so I will be happy details.