Tunneling a TCP-encapsulating payload (such as PPP) over a TCP-based connection (such as SSH's port forwarding) is known as "TCP-over-TCP", and doing so can induce a dramatic loss in transmission performance (a problem known as "TCP meltdown"), which is why virtual private network software …

HTTPTunnel is a tunneling software that can tunnel network connections through restrictive HTTP proxies over pure HTTP "GET" and "POST" requests. HTTPTunnel consists of two components: The client that resides behind the firewall and accepts network connections on ports that will either be mapped to a specific remote target server/port PureVPN Split Tunneling Feature for VPN Users - PureVPN Blog Mar 10, 2017 How to Monitor VPN Split Tunneling and Remote Endpoints Apr 15, 2020 LAN Switching - Configuring Layer 2 Protocol Tunneling GBPT provides a scalable approach to PDU tunneling by software encapsulating the PDUs in the ingress edge switches and then multicasting them in hardware. All switches inside the service provider network treat these encapsulated frames as data packets and forward them to the other end.

EUPALINOS is a feature-rich surveying software which covers all tasks and operations necessary to successfully run a tunneling project.
The straightforward user-interface with simple database-management requires only a short period of training while

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GBPT provides a scalable approach to PDU tunneling by software encapsulating the PDUs in the ingress edge switches and then multicasting them in hardware. All switches inside the service provider network treat these encapsulated frames as data packets and forward them to the other end.

The software is an open source software which means it is free software. It can be used to create a VPN from client to server or peer to peer and hybrid tunnel. It is a completely secure method of connecting to a public network.