Any thoughts about (or do any sshd support) rate limiting?

For example, it would be nice to have support for

- max-connections-per-ip-per-minute rate limiting, and
- max-child-per-ip, and
- max-connections-per-minute

I want to slow down ssh attempts.

I can use FreeBSD's inetd to do above and handle "sshd -i" for now.

Also can someone explain or show example of OpenSSH's MaxStartups
start:rate:full "random early drop" config??

Thanks