Can i install the ssh jumpbox behind a firewall?

Can i install the ssh jumpbox behind a firewall? What is the ip for which the license has to be issued when my ssh gateway would be installed in a LAN?

    Ezeelogin ssh jumphost can be behind a firewall and would work in LAN.

Refer the below articles :

Run the command on the ssh gateway server and it would show the ip for which the license has to be issued if your ssh gateway is behind a NAT.