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Secure Shell

Show me everything on SSL and TLS VPN Security

- Secure Shell (SSH), sometimes known as Secure Socket Shell, is a Unix-based command interface and protocol for securely getting access to a remote computer. It is widely used by network administrators to control Web and other kinds of servers remotely. SSH is actually a suite of three utilities - slogin, ssh, and scp - that are secure versions of the earlier UNIX utilities, rlogin, rsh, and rcp. SSH commands are encrypted and secure in several ways. Both ends of the client/server connection are authenticated using a digital certificate, and passwords are protected by being encrypted.

SSH uses RSA public key cryptography for both connection and authentication. Encryption algorithms include Blowfish, DES, and IDEA. IDEA is the default.

SSH2, the latest version, is a proposed set of standards from the Internet Engineering Task Force (IETF).

Learn more about SSL and TLS VPN Security

Crypto basics: VPNs: In this excerpt of Chapter 3 from "Cryptography for Dummies," author Chey Cobb explains how virtual private networks (VPNs) use encryption to secure data in transit.
The Shortcut Guide to Extended Validation SSL Certificates: In an excerpt from Dan Sullivan's book, "A Shortcut Guide to Extended Validation SSL Certificates," the author explains some of the limitations of SSL.
Snyder On Security: An insider's guide to the essentials: Joel Snyder, senior partner with consultancy Opus One, provides an in-depth look at information security trends and technologies.
VPNs and remote access: Secure deployment, setup and strategies: Learn about the latest innovations in VPN technology, IPsec VPN identity and authentication options, and secure VPN deployment strategies.
Network Access Control Learning Guide: Learn how to block and secure untrusted endpoints, and control user access with this Learning Guide.
Quiz: Web application threats and vulnerabilities: This quiz will help you determine how knowledgeable you are about securing your Web apps and whether you need to hone your Web security skills.

LAST UPDATED:

19 Jul 2005

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More resources from around the web:

-	Steve Acheson's Secure Shell (SSH) Frequently Asked Questions is recommended.
-	The developer of SSH is SSH Communications Security.
-	Rajpaul Bagga offers a Secure Shell (SSH) Howto .

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