In particular embodiments, a method includes intercepting a remote desktop connection request and connecting to a network gateway based on the remote desktop connection request. A first connection with a server is initiated via the network gateway using a first communication protocol. A plurality of cryptographic contexts are exchanged with the server. A token encrypted using one of the plurality of cryptographic contexts is received from the server. The token is sent from a client device to the server or a proxy to authenticate the client device, and a second connection is initiated with the server, via the proxy, using a second communication protocol.