ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
then restart the SSH daemon (service sshd restart).
Please note that the heartbleed issue does NOT affect SSH. If you are re-generating certificates due to heartbleed there is no need to do so for SSH.
Thank you Andre,
I thought that heartbleed issue will effect SSH.thats why i asked ssh certficate generation in webgateway....But thanks for sharing your knowledge & information.