Which technology has two modes of operation: transport and tunnel? secure hypertext transfer protocol secure shell ip security secure sockets layer?

IP security is a technology that operates the two modes: transport and tunnel modes. Each of these modes has its own uses and care should be taken to ensure that the correct one is selected for the solution.

·         Tunnel mode is most very often used between gateways, or at an end-station to a gateway, the gateway temporarily doing the duties as a proxy for the hosts in support of it.

·         Transport mode is used between end-stations or between an end-station and a gateway, if the gateway is being treated as a host—for example, an encrypted Telnet session from a workstation to a router, in which the router is the actual destination.