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Local port forwarding is the most common type of port forwarding. It is used to let a user connect from the local computer to another server, i.e. forward data securely from another client application running on the same computer as a Secure Shell (SSH) client. By using local port forwarding, firewalls that block certain web pages, can be ...
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 — known as the TCP meltdown problem [6] [7] which is why virtual private network (VPN) software may instead use a protocol simpler than ...
OpenSSH allows dynamic creation of tunnels, specified via a subset of the SOCKS protocol, supporting the CONNECT command. PuTTY is a Win32 SSH client that supports local creation of SOCKS (dynamic) tunnels through remote SSH servers. Secure ShellFish is a SSH client for iOS and macOS that includes a SOCKS server.
An SSH tunnel can provide a secure path over the Internet, through a firewall to a virtual machine. [ 9 ] The IANA has assigned TCP port 22, UDP port 22 and SCTP port 22 for this protocol. [ 10 ]
The use of SSL/TLS over TCP port 443 (by default; port can be changed) allows SSTP to pass through virtually all firewalls and proxy servers except for authenticated web proxies. [1] SSTP servers must be authenticated during the SSL/TLS phase. SSTP clients can optionally be authenticated during the SSL/TLS phase and must be authenticated in the ...
Tunneling: Unlike most traditional, application based SSH clients, web-based SSH clients are unable to tunnel ("forward") TCP traffic. For example, running an X session over a web-based SSH session is not possible. However, the lack of ability is caused by implementation issues, and not inherent in some way.
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.
The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...