How to I restart sshd
After you have changed your configuration on your remote Unix/linux server you must restart your ssh service.
The easiest way to do this is to simply restart your Unix machine. This is not always possible however.
To restart sshd without restarting your whole system, enter the following command
RedHat and Fedora Core Linux
service sshd restart
Suse linux
/etc/rc.d/sshd restart
Solaris 9 and below
/etc/init.d/sshd stop
/etc/init.d/sshd start
Solaris 10
svcadm disable ssh
svcadm enable ssh
AIX
stopsrc -s sshd
startsrc -s sshd