--> SSL stands for Secure Socket Layer.
--> SSL was developed by Netscape for secure communication between web server and client.
--> SSL VPN is sometimes also called as Web VPN.
--> SSL VPN works on transport layer of OSI reference model.
--> There are three versions in SSL
i) Version 1 ( never released)
ii) Version 2 ( Released)
iii) Version 3 ( also called as TLS)
--> Cisco SSL VPN uses TLS
--> SSL VPN works in three modes
i) Clientless Mode
ii) Thin Client Mode
iii) Thick Client Mode
i) Clientless Mode
--> Provides secure communication only for web based applications such as HTTP, HTTPS, OWA etc.
--> Client makes request to SSL enabled router or firewall ( Gateway) to access the resources.
--> No need of installing a software in the Client PC to access resources.
--> We require only Web browser in this mode.
--> It is also called as Web VPN.
ii) Thin Client Mode
--> Provides secure communication only for non web based applications which have static tcp ports ( Telnet,RDP,SSH).
--> It is also called as Port Forwarding.
--> No need of installing a software in the Client PC to access resources.
--> SSL was developed by Netscape for secure communication between web server and client.
--> SSL VPN is sometimes also called as Web VPN.
--> SSL VPN works on transport layer of OSI reference model.
--> There are three versions in SSL
i) Version 1 ( never released)
ii) Version 2 ( Released)
iii) Version 3 ( also called as TLS)
--> Cisco SSL VPN uses TLS
--> SSL VPN works in three modes
i) Clientless Mode
ii) Thin Client Mode
iii) Thick Client Mode
i) Clientless Mode
--> Provides secure communication only for web based applications such as HTTP, HTTPS, OWA etc.
--> Client makes request to SSL enabled router or firewall ( Gateway) to access the resources.
--> No need of installing a software in the Client PC to access resources.
--> We require only Web browser in this mode.
--> It is also called as Web VPN.
ii) Thin Client Mode
--> Provides secure communication only for non web based applications which have static tcp ports ( Telnet,RDP,SSH).
--> It is also called as Port Forwarding.
--> No need of installing a software in the Client PC to access resources.
--> Requires Java and Active X.
iii) Thick Client Mode
--> Provides secure communication for non web based applications as well as web based applications.
--> Requires client to install software to access resources ( Any Connect).
--> Requires Java and Active X.
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