Combined Username, Password, and SSH Key Authentication Mode for Jumpbox Connections

NetBrain's Jumpbox settings currently support only Telnet, SSH, or SSH Key as individual connection modes, with no option to combine username, password, and SSH key credentials into a single authentication method. This enhancement would add a new Jumpbox connection mode that allows administrators to configure username, password, and SSH key together as a single authentication method. Customers whose jump servers require this combined authentication scheme would be able to connect successfully without needing manual workarounds or unsupported configurations.