Introduction to SSH1, SSH2, and ssh1ssh2 in Linux

Introduction to SSH1, SSH2, and ssh1ssh2 in Linux

SSH: Secure Shell. Is a security protocol.
A common application scenario is remote console login.
SSH1 is free of charge and SSH2 is charged.
In fact, SSH is not only used in Linux and Unix, but also widely used in Windows NT.
Ssh encrypts and compresses the transmitted content compared with Telnet.

The SSH software package consists of a Server software package and a customer software package. In windows, Server software packages can only run in Windows NT and Windows 2000 Server versions. The client does not have this restriction.
For UNIX and Linux systems, the ssh server package and client package are usually used. Alternatively, you can use yum for installation. After the system is installed, ssh is enabled by default, modify the default port number in/etc/ssh/sshd_config. Then use putty or SecureCRT for testing.
If you want to use SSH2 and do not want to pay for it, Openssh is a free software package that complies with the GPL protocol and supports SSH1 and SSH2 standards, you can download it from www.openssh.com.

 

 

 

 

 

 

 

From: http://blog.csdn.net/cnmm22/article/details/44887763