The Host Security Tab specifies the security parameters associated with the Host IP Address and Port through which clients are proxied. This is the "host" side of the secure connection. In other words, connections between the Security Server and the Host will be secure.
The Host Security Level radio buttons set the Secure Sockets Layer version level to be negotiated.
Non-Secured is a clear text connection without any encryption. Set this if the connection from this Security Server to the host computer or server is not encrypted.
Secured w/ SSL v3 selects version 3 of the Secure Sockets Layer protocol. Set this if the connection from this Security Server to the host computer is encrypted using SSL V3. This is used primarily when the Client Security is Non-Secured allowing non-SSL capable clients to communicate with SSL capable hosts or servers.
Secured w/ TLS v1 selects version 1 of the Transport Layer Security protocol. Set this if the connection from this Security Server to the host computer is encrypted using TLS V1 only. This is used primarily when the Client Security is Non-Secured, allowing non-SSL capable clients to communicate with SSL capable hosts or servers.
The Encryption Strength radio buttons set the available cipher suites used when connecting to SSL capable hosts or servers.
Export Ciphers Only uses SSL supporting 56-bit keys. It is a less secure, exportable cipher suite.
All Ciphers uses any SSL cipher suite the Security Server can negotiate with the host or server.
Strong Ciphers Only uses only SSL cipher suites capable of 128 bit encryption or greater to connect. If the host or server is not capble of 128-bit or greater SSL, the connection will fail.