What is a SSL-VPN?
SSL-VPN stands for Secure Socket Layer Virtual Private Network. It is a term used to refer to any device that is capable of creating a semi permanent encrypted tunnel over the public network between two private machines or networks to pass non-protocol specific, or arbitrary traffic. This tunnel can carry all forms of traffic between these two machines meaning it is encrypting on a link basis, not on a per application basis.
It is a mechanism provided to communicate securely between two points with an insecure network in between them.
Benefits of using SSL VPN:
· Improves work force productivity since Employees and contractors can perform tasks even when not physically present in their usual work facilities.
· Easy deployment since it does not require any special client software to be installed.
· Provides more security options.
· Improved manageability due to highly configurable access control capabilities, health checks etc.
· Lowers costs because of the Increased self-service capabilities for conducting business with outside parties such as suppliers and customers. Employees can work remotely on a regular basis (e.g., IT consulting) thereby allowing the organization to maintain less office space (and save money).
· Increased self-service capabilities for suppliers improve their efficiency, yielding better-negotiated service/product rates.
· If remote access is used as part of business-continuity strategy, fewer seats may be necessary at disaster-recovery/business-continuity facilities than if all workers must work at the secondary site.
References: http://www.sans.org/reading_room/whitepapers/vpns/1459.php
http://sslvpnbook.packtpub.com/chapter6.htm
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