Connection
/ Port Forwarding
The Port Forwarding category of the Session Options dialog allows you to configure secure connections to an SSH1 The first version of the SSH protocol which provides a way to encrypt network traffic between a client and a server. or SSH2 The second version of the SSH protocol which provides a way to encrypt network traffic between a client and a server, with a slightly different set of security features than the SSH1 protocol provides. server A computer program that provides services to other computer programs (called clients). Often the computer on which a server program runs is also called a server. The term host is often used as a synonym for server. .
Overview of Port Forwarding
Port forwarding The concept of connecting a logical port on a local machine to a port on a remote machine over a secure (encrypted) channel. All requests for services sent to the local port are then forwarded across the secure channel to the corresponding port on the remote machine. is a powerful tool that allows you to secure TCP/IP Transmission Control Protocol/Internet Protocol. TCP/IP is the basic communication method used over the Internet. The TCP on the side of the sending machine is responsible for breaking up a message into smaller portions called packets. These packets are then sent to their destination and the TCP on the side of the receiving machine is responsible for reassembling the packets to form the original message. The Internet Protocol provides a means of properly addressing each packet so that it arrives at its destination. SSH and Telnet, for example, are built upon TCP/IP. traffic using SecureCRT's SSH1 and SSH2 protocol support. This means that you can encrypt application data using protocols such as IMAP, POP3 and SMTP. For example, if you receive your email from an Internet Service Provider (ISP), you could encrypt the communication between your workstation running the email client A computer or application that uses services provided by a server. and the ISP's SSH SSH is an acronym for the Secure Shell protocol. A communications protocol used to encrypt network traffic between a client and a server. server.
In general, with any port forwarded by SecureCRT for an application, the application needs to be reconfigured to use the localhost or loopback address 127.0.0.1 as its application server address.
Locally forwarded connections
Name
Displays the unique identifying name for the connection.
Local Address
Displays the local port number for the connection.
Remote Host
Displays the remote machines hostname or IP address and the remote port.
Application
Displays the application to be run over this connection.
To create a new port-forwarded connection, click on the Add... button to open a blank Local Port Forwarding Properties dialog. To modify an existing connection, select that connection and click on the Edit... button to open that connection's Local Port Forwarding Properties dialog. To remove an existing connection, select that connection and click on the Delete button.
Do not request a shell
Select this option to have SecureCRT not request a command shell when attempting to port forward. This ensures that port forwards will work even if shell access is denied.
Session Options/Connection Port Forwarding/Remote