Cisco Cisco Web Security Appliance S690 Guida Utente

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Chapter 20      Authentication
Tracking Authenticated Users
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Cisco IronPort AsyncOS 7.1 for Web User Guide
OL-23207-01
Note
If the Web Security appliance uses cookies for authentication surrogates, Cisco 
recommends enabling credential encryption. For more information, see 
.
Tracking Authenticated Users
 describes which authentication surrogates are supported with other 
configurations and different types of requests (explicitly forwarded and 
transparently redirected). 
* Works after the client makes a request to an HTTP site and is authenticated, or 
when the client makes a request to an HTTPS site and the Identity is configured 
to decrypt the first HTTPS request for authentication purposes. When the HTTPS 
Proxy is configured to deny the first HTTPS request, all requests to HTTPS sites 
before authentication happens for a previous request are dropped.
** When cookie-based authentication is used, the Web Proxy cannot authenticate 
the user for HTTPS and FTP over HTTP transactions. Due to this limitation, all 
HTTPS and FTP over HTTP requests bypass authentication, so authentication is 
not requested at all. For more information on how HTTPS requests are assigned 
Identity and non-Identity policy groups, see 
.
Surrogate 
Types
Explicit Requests
Transparent Requests
Credential 
Encryption:
Disabled
Enabled
Disabled
Enabled
Protocol:
HTTP
HTTPS &
FTP over 
HTTP
HTTP
HTTPS &
FTP over 
HTTP
HTTP
HTTPS
HTTP
HTTPS
No Surrogate
Yes
Yes
NA
NA
NA
NA
NA
NA
IP-based
Yes
Yes
Yes
Yes
Yes
No/Yes*
Yes
No/Yes*
Cookie-based
Yes
Yes***
Yes
No/Yes**
Yes
No/Yes** Yes
No/Yes**