Cisco Cisco Web Security Appliance S690 User Guide
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AsyncOS 8.8 for Cisco Web Security Appliances User Guide
Chapter 4 Intercepting Web Requests
Web Proxy Options for Intercepting Web Requests
Step 5
Submit and commit your changes.
Related Topics
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Web Proxy Cache
The web proxy caches data to increase performance. AsyncOS includes defined caching modes that
range from safe to aggressive, and also allows customized caching. You can also exclude specific URLs
from being cached, either by removing them from the cache, or by configuring the cache to ignore them.
range from safe to aggressive, and also allows customized caching. You can also exclude specific URLs
from being cached, either by removing them from the cache, or by configuring the cache to ignore them.
Clearing the Web Proxy Cache
Step 1
Choose Security Services > Web Proxy.
Step 2
Click Clear Cache and confirm your action.
Generate Headers
Generate and add headers that encode information about the request.
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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.
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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.
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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.
Use Received Headers
Allows a Web proxy deployed as an upstream proxy to identify clients using
X-Forwarded-For headers send by downstream proxies. The Web Proxy will
not accept the IP address in a X-Forwarded-For header from a source that is
not included in this list.
X-Forwarded-For headers send by downstream proxies. The Web Proxy will
not accept the IP address in a X-Forwarded-For header from a source that is
not included in this list.
If enabled, requires the IP address of a downstream proxy or load balancer
(you cannot enter subnets or host names).
(you cannot enter subnets or host names).