Internet browser performance slows down after installing SiteAdvisor Enterprise 3.5

Technical Articles ID: KB76585
Last Modified: 3/17/2015

Environment

McAfee SiteAdvisor Enterprise (SAE) 3.5

Supported Internet browsers (see KB51244)

Problem

After you install SAE 3.5, the Internet browser is slower to respond when browsing.

Cause

The loss of performance is due to the slow resolution time of your Domain Name System (DNS) when DNS is not configured to route to the Internet. The issue becomes visible with SAE 3.5 patch 1 because this is the first version to use the Internal Landmark (DNS name) feature to first determine if every URL is part of an internal website or not. To do so, the Internal Landmark features calls the Windows API (Application Programming Interface), which uses the GetAddrInfo function to do internal name lookups. If your DNS does not route to the Internet, processing these lookups will be slow, which in turn affects the speed at which you can browse.

Solution

Install SAE 3.5 patch 3.

Patch 3 includes improvements to web page content loading, allowing content to load while SAE is waiting for DNS timeout. If patch 3 does not improve performance, try the following options:

Enable The SAE Web Gateway interlock feature:
1. Log on to SAE.
2. Select Action Enforcement.
3. Select Enable.
4. Select one or more of the following as applicable:
  - Client is using one of your organization's default gateways (this is the only option that will work if there is no DNS provided by proxy as well).
  - Web gateway enforcement is detected.

For further details covering the SAE 3.x and the Web Gateway Interlock feature, see PD22603.

Host the Proxy Automatic Configuration (PAC) file on your central web server.
Push the PAC file to client computers.
Use either of the following to push the PAC file to all or to selected clients.
- Microsoft Group Policy (GPO)
  This works with any Internet browser. See http://support.microsoft.com/kb/274846/.
- Microsoft Internet Explorer Maintenance (IEM)
  This is particular to Internet Explorer. See http://technet.microsoft.com/en-us/library/cc726038.aspx.

Workaround

If you enable the stand-down policy, SAE will not rate any URL, SAE will not do DNS lookups, and URLs do not have to be processed. If you want SAE to stand-down in your corporate network, switch on the stand-down policy. This leaves SAE virtually disabled on the client. In this case you must ensure all block enforcement is handled by your Web Gateway. See KB76403 on the Web Gateway Interlock policy for Stand-up and Stand-down conditions for SAE.

Affected Products

SiteAdvisor Enterprise 3.5

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Internet browser performance slows down after installing SiteAdvisor Enterprise 3.5

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Internet browser performance slows down after installing SiteAdvisor Enterprise 3.5

Environment

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Solution

Workaround

Affected Products

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