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How can I ensure that Websense Enterprise filters "all" requests (URL requests and tunneled protocol requests)?
Article Information
Article #: 976 Last Review: 12-Dec-2007
NOTE Please refer to the notice at the end of this article for more information pertaining to support of third party software.
Article
Important Information
Prerequisites:

Consult the Websense product documentation listed below.

Notes:

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Warnings:

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Problem Description:

Websense filters Internet content according to policy settings. When protocol filtering is active and a protocol request is made, Websense performs queries to:

  • Determine the protocol (or Internet application) name.
  • Identify the protocol based on the request destination address.
  • Search for related port numbers in custom protocol definitions.
  • Search for related port numbers (or signatures) in Websense protocol definitions.

Websense software uses these queries to filter the protocol appropriately.

When filtering some protocols, Websense software previously used the User-Agent field of the HTTP header and the packet signature to determine whether a request was a URL request or a tunneled protocol request (a request that bypasses a firewall via a port normally used by HTTP traffic).

Error Messages: (Detailed)

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Resolution:

As of Websense database 92938, the User-Agent issue has been corrected. Packet signatures with User-Agents are now removed. All customers have been updated with the nightly protocol database upload. No additional software or patch is needed for customers, because the update happened automatically.

 

Related Articles:

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Keywords:

Verify, validate, confirm, requests, tunnel, protocol, Network Agent, Filtering Service, Websense Enterprise
Documentation References
Websense Documentation:

  • Websense Web Security Suite and Websense Enterprise Administrator's Guide

3rd Party Documentation:

  • N/A

NOTICE In the course of providing technical support for our own products, we find that we are sometimes asked to provide information with respect to the operation of third-party products and the interoperability of those products with Websense products. We may elect to provide information regarding third-party products as a courtesy to our customers, but because the information relates to non-Websense products, the information may not be complete or accurate and cannot be warranted or guaranteed in any way. Websense does not represent that it has any expertise with respect to non-Websense products and will not be responsible in any way for claims arising from our customers' use of third-party products, regardless of whether Websense has provided any information or support relating to those products.
Websense Product Data
Product Area(s):
WSE 5.5
Product Components Affected: Filtering Service, Network Agent
Integration Component: All
Platform: Windows, Linux, Solaris
Client OS: N/A
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