Patent attributes
Transmitting data over a VPN connection includes receiving, at a VPN concentrator, from a VPN user device, an initiation request of a first connection, initialized to have an initial MSS, from the VPN user device to a target. The first connection is terminated at the VPN concentrator. A second connection is established across a VPN tunnel between the VPN concentrator and the VPN user device. A third connection is established between the VPN concentrator and the target. A first MSS for the second connection and a second MSS for the third connection are set. One of the first MSS or the second MSS are set to prevent packet fragmentation due to VPN-related encapsulation. First data packets are transmitted between the VPN concentrator and the VPN user device using the first MSS. Second data packets are transmitted between the VPN concentrator and the target using the second MSS.