J. Content Filter Faq; J01. What's The Operation Between Zyxel Appliance And Bluecoat Data Center; J02. How Many Entries Can The Cache Of Web Site Auto Categorization Keep At Most; J03. Can I Specify The Time Out Value Of The Query Response From Bluecoat Data Center - ZyXEL Communications ZyWall 35 Support Notes

ZyWALL 35 Support Notes

J. Content Filter FAQ

J01. What's the operation between ZyXEL appliance and BlueCoat data center?

Whenever a PC behind ZyXEL appliance issues HTTP requests to some public WEB server. ZyXEL
appliance will forward the request to the targeted WEB server, but also issue an categorization query to
BlueCoat data center. When the HTTP response is back to ZyXEL appliance, the appliance will hold the
response for a while, and wait for the query result from the BlueCoat data center. If the query is not back
within 10 seconds (by default setting), ZyXEL appliance will block (by default setting) the HTTP
response to the PC. If the query is back, ZyXEL appliance will drop or forward the request according to
the Content Filtering policy set in the appliance. The result of categorization query will be cached in
ZyXEL appliance. Later on, HTTP requests to the same WEB server will be inspected by local cache.

J02. How many entries can the cache of Web Site Auto Categorization keep at most?

ZyXEL appliance can keep 1024 entries in the cache at most. Entries that are used less frequently will be
overwritten first when the cache is full. Contents inside the cache will be cleared out after rebooting.

J03. Can I specify the time out value of the query response from BlueCoat data center?

Yes, you can change it on ZyXEL appliance. The default value of the time out is 10 seconds.
J04. Can I decide whether to forward or drop the HTTP response if the query to BlueCoat
data center is timed out?
Yes, you can set the policy, drop or forward, when query is timed out. The default policy is block.

J05. How to register for BlueCoat service?

Either for free trial purpose or if you get PIN code by purchasing iCard, you need to initiate registration
process from ZyXEL appliance by clicking Registration and Reports button from content Filter->
Categories page.

J06. Why can't I make registration successfully?

Since the Registration job is between ZyXEL appliance and Http://myZyXEL.com server. Please make sure
your Internet connection from ZyXEL appliance is ok first, and keep the connection between them online
during the registration process. Since once the registration is granted on the Http://myZyXEL.com server,
Http://myZyXEL.com needs to feedback the result (either Successful or Fail) to ZyXEL appliance.
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