Certificates for SSH Service

So you need to add the SSL certificate at System>File Management>SSL Certificate List. Once you've done this you need to select it in the clientssl profile used in the virtual server. To do this, create a new Client SSL profile at Local>Profiles>SSL>Client. Select the certificate and key that you have installed and try it out.

If it still doesn't work, take some tcpdumps, use ssldump and check out /var/log/ltm for more info.