Cisco Cisco Web Security Appliance S380 Guía Del Usuario

Complete the advanced web proxy settings as required.

Proxy mode

Forward — Allow the client browser to name the internet target.
Requires individual configuration of each web browser to use the web
proxy. The web proxy can intercept only explicitly forwarded web
requests in this mode.

Transparent (Recommended) — Allow the web proxy to name the
internet target. The web proxy can intercept both transparent and
explicitly forwarded web requests in this mode.

IP Spoofing

disabled — The web proxy changes the request source IP 

address to match its own address to increase security.

enabled — The web proxy retains the source address so 

that it appears to originate from the source client rather than from the

 

Web Security appliance.

Persistent Connection 
Timeout

The maximum time in seconds the web proxy keeps open a connection to a 
client or server after a transaction has been completed and no further activity 
is detected.

Client side. The timeout value for connections to clients.

Server side. The timeout value for connections to servers.

If you increase these values connections will remain open longer and reduce 
the overhead used to open and close connections repeatedly. However, you 
also reduce the ability of the Web Proxy to open new connections if the 
maximum number of simultaneous persistent connections has been reached.

Cisco recommends keeping the default values.

In-Use Connection 
Timeout

The maximum time in seconds that the web proxy waits for more data from 
an idle client or server when the current transaction has not yet been com-
pleted.

Client side. The timeout value for connections to clients.

Server side. The timeout value for connections to servers.

Simultaneous Persistent 
Connections (Server 
Maximum Number)

The maximum number of connections (sockets) the Web Proxy keeps open 
with servers.