Ssh.


Ssh, or better known as the Secure Shell daemon, runs on port 22 & is used in exactly the same way as the normal Linux shell. The ssh daemon is perfectly suited for remote logins & also remote administration due to the fact that the data being sent to & from the server is encrypted, & is therefore secure. The Telnet daemon offers the same remote "shell login" but all the data is transferred in plain text! I would not recommend using any form of telnet connection! It is relatively easy to sniff out passwords & other critical data when using a telnet connection.

There are also ssh clients available for windows that enable you to connect with a Linux machine, one of the best is PuTTY which is available for free download at http://www.chiark.greenend.org.uk/~sgtatham/putty/. PuTTY has one of the best implementations of the Linux login & you’ll find that it’s one of the few programmes that enables you to use the function keys, & also have the colours & keyboard shortcuts correctly translated.

When using a ssh login, whether in your internal network or across the internet, all data is encrypted. But it is still a good idea to log in first as a normal user & then with the su (super user) command upgrade your login to root. I use a ssh client on a windoze machine to gain administration access to the Linux server, this means that the server requires no keyboard or monitor, & is much more secure than other "web based" administration packages like Webmin.



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copyright 2001 Rob Hawke.
rob@highasakite.net