What is securecrt?

SecureCRT is a terminal emulation program that supports SSH (SSH1 and SSH2). Simply put, it is a software for logging into UNIX or Linux server hosts under Windows. You can encrypt files by using the included VCP command line program. transmission.

A brief introduction to SecureCRT

SecureCRT is a software that supports SSH (SSH1 and SSH2) The terminal emulation program is simply a software for logging into a UNIX or Linux server host under Windows.

SecureCRT supports SSH, as well as Telnet and rlogin protocols. SecureCRT is an ideal tool for connecting to servers running Windows, UNIX and VMS. Encrypted file transfers can be performed using the included VCP command line program.

Has all the features of the popular CRTTelnet client, including: automatic registration, different features for different hosts, printing capabilities, color settings, variable screen size, user-defined keymaps and the excellent VT100, VT102, VT220 compete with ANSI.

Can be run from the command line or from the browser. Other features include text scripts, easy-to-use toolbars, user-friendly keymap editor, customizable ANSI colors, and more.

SecureCRT's SSH protocol supports DES, 3DES and RC4 passwords and password and RSA authentication.

SSH (Secure Shell Protocol) Introduction

SSH is the abbreviation of Secure Shell, developed by the Network Working Group of the IETF ;SSH is a security protocol based on the application layer. SSH is currently the most reliable protocol designed to provide security for remote login sessions and other network services. Using the SSH protocol can effectively prevent information leakage during remote management. SSH was originally a program on UNIX systems and quickly expanded to other operating platforms. SSH, when used correctly, can close holes in your network. SSH clients are available for a variety of platforms. Almost all UNIX platforms—including HP-UX, Linux, AIX, Solaris, Digital UNIX, Irix, and others—can run SSH.

Application in the project

Configuring local port forwarding in SecureCRT involves the local machine, springboard machine, and target server, because the local machine and The target server cannot be pinged directly, so port forwarding needs to be configured to forward the local request to the target server.

1. Log in to the springboard machine [192.168.247.128]

2. Configure local port forwarding

option ---> Session Options--->Port Forwarding-->Add--->Local Port Forwarding Properties--->Confirm

3. At this time, the The request for port 8081 of the local machine (127.0.0.1) is forwarded by the springboard machine (192.168.247.128) to the 8081 port of the target server (10.192.26.31)

4. During the forwarding process, SecureCRT (springboard machine) must be in Connection status, otherwise port forwarding will fail

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