That's just the original it is based off. There are a few more recently updated forks floating around also. We maintain ours in house. Either way, if you want

That's just the original it is based off. There are a few more recently updated forks floating around also. We maintain ours in house. Either way, if you want to tinker with opensshd I can recommend it as a starting point. It's very small, readable and easily tweaked.