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  2. Port forwarding - Wikipedia

    en.wikipedia.org/wiki/Port_forwarding

    In other words, remote port forwarding lets users connect from the server side of a tunnel, SSH or another, to a remote network service located at the tunnel's client side. To use remote port forwarding, the address of the destination server (on the tunnel's client side) and two port numbers must be known.

  3. Secure Shell - Wikipedia

    en.wikipedia.org/wiki/Secure_Shell

    v. t. e. The Secure Shell Protocol ( SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. [1] Its most notable applications are remote login and command-line execution. SSH was designed on Unix-like operating systems, as a replacement for Telnet and for unsecured remote Unix shell protocols ...

  4. Tunneling protocol - Wikipedia

    en.wikipedia.org/wiki/Tunneling_protocol

    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 may instead use a protocol simpler than TCP for the ...

  5. Comparison of SSH clients - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_SSH_clients

    An SSH client is a software program which uses the secure shell protocol to connect to a remote computer. This article compares a selection of notable clients. This article compares a selection of notable clients.

  6. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    Secure Shell (SSH), secure logins, file transfers (scp, sftp) and port forwarding 23: Yes: Assigned: Telnet protocol—unencrypted text communications: 25: Yes: Assigned: Simple Mail Transfer Protocol (SMTP), used for email routing between mail servers 27: Assigned: nsw-fe (NSW User System FE) 28: Unofficial

  7. Comparison of SSH servers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_SSH_servers

    Comparison of SSH servers. An SSH server is a software program which uses the Secure Shell protocol to accept connections from remote computers. SFTP / SCP file transfers and remote terminal connections are popular use cases for an SSH server.

  8. Port (computer networking) - Wikipedia

    en.wikipedia.org/wiki/Port_(computer_networking)

    In computer networking, a port or port number is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service. At the software level, within an operating system, a port is a logical construct that identifies a specific process or a type of network service. A port at the software level is identified for ...

  9. Virtual private network - Wikipedia

    en.wikipedia.org/wiki/Virtual_private_network

    Secure Shell (SSH) VPN – OpenSSH offers VPN tunneling (distinct from port forwarding) to secure [ambiguous] remote connections to a network, inter-network links, and remote systems. OpenSSH server provides a limited number of concurrent tunnels.