Configuring the duration of caching web traffic

To detect malicious code more efficiently, Web Anti-Virus caches fragments of objects that are downloaded from the Internet. Web Anti-Virus uses caching to scan objects only after they arrive on the protected virtual machine in full.

Caching increases object processing time, and therefore the time before the application delivers the object to the user. Caching can cause problems when downloading or processing large objects, because the connection with the HTTP client may time out.

To solve this problem, you can limit the duration for which fragments of objects that are downloaded from the Internet are cached. When the specified period of time expires, the user receives the downloaded part of the object without scanning, and after the object is fully copied, the object is scanned in full. This reduces the time that is needed to deliver objects to the user and eliminates the connection loss problem. The Internet security level is not reduced in that case.

Removing the limit on caching time makes anti-virus scanning more efficient, but slows down access to objects.

To configure the web traffic caching duration via Kaspersky Security Center:

1. Open Kaspersky Security Center Administration Console.
2. In the Managed devices folder of the console tree, open the folder with the name of the administration group to which the relevant protected virtual machines belong.
3. In the workspace, select the Policies tab.
4. Select a Light Agent for Windows policy in the list of policies and open the Properties: <Policy name> by double-clicking.
5. In the Light Agent for Windows policy properties window, select the Web Anti-Virus section in the list on the left.

   In the right part of the window, the Web Anti-Virus component's settings are displayed.

6. In the Security level section, click the Settings button.

   The Web Anti-Virus window opens.

7. In the Web Anti-Virus window, on the General tab in the Actions section, do one of the following:
   • If you want to limit the time for which web-traffic is cached and speed up its scanning, select the Limit web traffic caching time check box.
   • If you want to cancel the time limit on caching web-traffic, clear the Limit web traffic caching time check box.
8. Click OK in the Web Anti-Virus window.
9. Click the Apply button.

To configure the web traffic caching duration in the local interface:

1. On the protected virtual machine, open the application settings window.
2. In the left part of the window, in the Anti-Virus protection section, select Web Anti-Virus.

   In the right part of the window, the Web Anti-Virus component's settings are displayed.

3. Complete steps 6-8 of the previous instructions.

   If the settings in the local interface are not available, this means that the values of settings defined by the policy are used for all protected virtual machines of the administration group.

4. To save changes, click the Save button.

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