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Web Security Performance Issues

I've got multiple clients on ASG120 and ASG220 Appliances that once Web Security is Enabled the Web Surfing slows down to a crawl.  I upgraded a client from a 256k T1 to a 8Mbps Broadband Cable connection and they didn't see any improvement on Internet Speeds.  If I disable the Web Security, the Internet Speeds are blazing.  I've tried disabling AV Scanning and Caching which seems to help, but it still isn't that great.

Could there be something missing or is this just something 8.201?

My Config is as follows.

Web Security Enabled - Transparent Mode - Authentication is None.
URL Filtering is Allow by Default - Block Spyware Communication
We then have certain categories set to block

I have this same setup at other except for the Authentication being set at Agent.

Any suggestions would be helpful. It is definitely Web Security slow it down as when it is off the Internet is fast.


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  • What happens if you disable URL filtering (including unchecking blocking of spyware)?  I've had a couple of customers, due to network issues, that had trouble reaching the cloud content filter categorization servers in a reasonable amount of time... if the speed improves, then look in this forum for the instructions needed to enable local content filter DBs.

    CTO, Convergent Information Security Solutions, LLC

    https://www.convergesecurity.com

    Sophos Platinum Partner

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    Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries.  Use the advice given at your own risk.