session_09_vpn__ipsec__and_tls_101908

Functions as a proxy for both client web browser and

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Unformatted text preview: tected in the TLS Handshake Protocol, the detecting party sends an alert message to the other party. The SSL Record layer supports alert messages that convey information about the status of the connection. There are two types of alerts: Fatal and Warning. A Fatal alert message indicates that the connection is so bad that it needs to be terminated immediately. A Warning alert message indicates that there are some problems in the connection. Like other messages, alert messages are enciphered and compressed, as specified by the current connection state. 48 VPN, IPSec and TLS SSL VPN SSL VPN Gateway • Web Applications • Client/Server • Telnet • SSH • Email • File Transfer Internet SSL (TLS) Secure Connection S S L Applications Proxy Socks Address Translation Kiosk • • • • • Provides secure remote access to corporate applications. Uses SSL & TTL as the underlying transport to establish a secure session between any web browser and the proxy server in the SSL VPN Gateway. Presents users with a web portal containing links to applications. Functions as a proxy for both client (web browser) and server (web server) – there is never a direct connection to the private network. Ensures that authorized users have access only to specific resources as allowed by the company security policy implemented by the proxy server and integrated traffic management. VPN IPsec IKE v2 TLS M. Mogollon – 01/08 - 49 • An SSL VPN uses SSL and proxy technology to provide authorized and secure access for endusers to HTTP, client/server, and file sharing resources. SSL VPNs use SSL & TTL as the underlying transports to establish a secure session between any Web browser and the proxy server in the SSL VPN Gateway. It functions as a proxy for both client (Web browser) and server (Web server) – there is never a direct connection to the private network. The proxy technology in SSL VPNs gives a Web browser access to applications that SSL alone doesn’t provide. • In a SSL VPN (proxy server), two connections are established: one between the Web browser in the...
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