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Web Gateway 7.1.5 Product Guide - McAfee

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The rule set contains the following rules:<br />

Create notification message<br />

Monitoring<br />

Error handling 8<br />

Always –> Continue — Set User-Defined.cacheMessage =<br />

“Cache partition usage at “<br />

+ Number.ToString (Statistics.Counter.GetCurrent(“<strong>Web</strong>CacheDiskUsage”))<br />

+ “%”<br />

The rule is always executed when the criteria of its rule set is matched. The rule then uses an<br />

event to set a user-defined property to a chain of values that make up a message text on the web<br />

cache usage.<br />

The Continue action lets processing continue with the next rule.<br />

Send SNMP trap and other rules<br />

Always –> Continue — ...<br />

The Send SNMP trap rule and other rules in the rule set are always executed when the rule set<br />

criteria is matched. The rules use different events for taking measures to make the administrator<br />

aware of the web cache usage.<br />

Note: These rules are not enabled by default.<br />

Check Request Overload<br />

This nested error handling rule set handles measures that are taken when the number of requests<br />

processed on the appliance per second exceeds a configured value.<br />

Nested error handling rule set — Check Request Overload<br />

Criteria — Statistics.Counter.GetCurrent(“HttpRequests”)<br />

greater than or equals 480000<br />

The rule set criteria specifies that the rule set applies when the value of the Statistics.Counter.<br />

GetCurrent property for requests is 480,000 or higher. This value is the number of requests that are<br />

currently processed one the appliance per second.<br />

The Statistics module, which provides the value, runs with default settings, as is specified after the<br />

HttpRequests property parameter.<br />

The rule set contains the following rules:<br />

Create notification message<br />

Always –> Continue —<br />

Set User-Defined.requestsPerSecond =<br />

Statistics.Counter.GetCurrent(“HttpRequests”))<br />

/ 60<br />

Set User-Defined.requestLoadMessage =<br />

“detected high load: ”<br />

+ Number.ToString (User-Defined.requestsPerSecond)<br />

+ “requests per second”<br />

The rule is always executed when the criteria of its rule set is matched. The rule then uses two<br />

events to set user-defined properties. One of these properties is set to the number of requests that<br />

are currently processed on the appliance per second. The other is set to a chain of values that<br />

make up a message text on this number.<br />

The Continue action lets processing continue with the next rule.<br />

<strong>McAfee</strong> <strong>Web</strong> <strong>Gateway</strong> <strong>7.1.5</strong> <strong>Product</strong> <strong>Guide</strong> 309

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