starting/stopping sshd is done with
Now I needed to get ssh working over 3g but there is an aegis protected script at /etc/network/if-up.d/drop_gprs_to_sshd that prevents gprs connections to port 22. Modifying the file would work but most likely malf the phone.
Frals suggested chmod -x the file so it wouldn't execute could work, but I don't know if aegis would allow that, and I didn't feel like testing, so I just changed the port instead.

To do that just edit the /etc/ssh/sshd_config file and set the port to whatever you want.
You also need modify the AllowUsers line to allow logins from your ip adresses.