Cisco Cisco Web Security Appliance S690 Guía Del Usuario
4-4
AsyncOS 9.1 for Cisco Web Security Appliances User Guide
Chapter 4 Intercepting Web Requests
Web Proxy Options for Intercepting Web Requests
Step 4
Complete the advanced web proxy settings as required.
Property
Description
Persistent Connection
Timeout
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 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.
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
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.
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)
Connections (Server
Maximum Number)
The maximum number of connections (sockets) the Web Proxy keeps open
with servers.
with servers.
Generate Headers
Generate and add headers that encode information about the request.
•
X-Forwarded-For headers encode the IP address of the client from
which an HTTP request originated.
which an HTTP request originated.
Note
To turn header forwarding on or off, use the CLI
advancedproxyconfig
command, Miscellaneous option, “Do you
want to pass HTTP X-Forwarded-For headers?”
Note
Using an explicit forward upstream proxy to manage user
authentication or access control with proxy authentication requires
forwarding of these headers.
authentication or access control with proxy authentication requires
forwarding of these headers.
•
Request Side VIA headers encode the proxies through which the
request passed on its way from the client to the server.
request passed on its way from the client to the server.
•
Response Side VIA headers encode the proxies through which the
request passed on its way from the server to the client.
request passed on its way from the server to the client.