Remotely logging on to machines is a very common task The most common programs to login were telnet, rsh and rlogin Networks, and LANs in particular, are insecure If a group of computers are connected in a lab, any computer in the lab can see all the data sent across the network Authentication is the process of proving an identity To access a computer, you provide an account name and something that proves you are allowed to access it Passwords are the normal method for authentication Passwords must be protected and this is difficult across a network telnet and friends send login names and passwords in plain text
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Secure shell (SSH) can safely be called one of the rare successes in which a more secure technology has largely replaced a less secure but entrenched tool: telnet. We perform a market analysis to determine how and why SSH succeeded despite the existence of an entrenched legacy tool while similar technologies such as secure file transfer protocols have been far less successful. We show that network externalities, usually a first order effect, were not a significant factor impeding the adoption of SSH, and that SSH offered equivalent functionality and greater ease of use. We argue that these factors were the primary consideration in the willingness to change.
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What is SSH SSH (Secure SHell) is a network protocol which provides a replacement for insecure remote login and command execution facilities, such as telnet, rlogin and rsh. SSH encrypts traffic in both directions, preventing traffic sniffing and password theft. SSH also offers several additional useful features: Compression: traffic may be optionally compressed at the stream level. Public key authentication: optionally replacing password authentication. Authentication of the server: making man-in-the-middle attack more difficult Port forwarding: arbitrary TCP sessions can be forwarded over an SSH connection.
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In the interest of security and information integrity, Rutgers University has implemented several new changes in the ways to upload, share, and send files via your RCI account. Files must be transferred via secure means; you will no longer be able to upload files via programs such as CuteFTP or WS_FTP. SSH Secure File Transfer is the default program will you find available on all university computers.
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Not all IOS images support SSH/crypto, check your IOS version. FYI : Newer switch IOS’s also are able to handle SSH, as well as the 6500 series switches. Objective: Configure the router for SSH Debug and show commands for troubleshooting Strengthen SSH by configuring SSHv2 Steps: 1. Hostname 2. Domain-name 3. Generate RSA keys 4. SSH timeouts
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With an RCI account, you are also allotted a certain amount of web storage space which you can use, for example, to distribute material to a class. Before you can begin sharing files, though, you will need to set up a certain folder on your account, called public_html. public_html is the default name for directories on all Rutgers systems that will include files to be shared over the web, which can be loaded up in any web browser.
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