• Check the current sshd status:

  service sshd status

• Start sshd service:

  service sshd start

• Set sshd autostart on system startup

  chkconfig sshd on

• List the current autostart status

  chkconfig --list |grep sshd

Or use a simple interface:

# ntsysv

Verified on CentOS 6.4 x86_64.