ProSecure Unified Threat Management (UTM) Appliance

Scanning all protocols enhances network security but might affect the performance of the UTM. For an optimum balance between security and performance, enable scanning of only the most commonly used protocols on your network. For example, you can scan FTP and HTTP, but not HTTPS (if this last protocol is not used often). For more information about performance, see Performance Management on page 428.

To configure the web protocols and ports to scan:

1.Select Application Security > Services. The Services submenu tabs display with the Services screen in view.

Note: For information about email protocols and ports, see Customize

Email Protocol Scan Settings on page 194.

Figure 114.

2.In the Web section of the screen, select the protocols to scan by selecting the Enable check boxes, and enter the port numbers if different from the default port numbers:

HTTP. Select the HTTP check box to enable Hypertext Transfer Protocol (HTTP) scanning. This service is enabled by default and uses default port 80.

HTTPS. Select the HTTPS check box to enable Hypertext Transfer Protocol over Secure Socket Layer (HTTPS). This service is disabled by default. The default port is 443.

Note: You can keep HTTPS scanning disabled and still block selected HTTPS websites by configuring the HTTPS Smart Block feature. For more information, see Configure HTTPS Smart Block on page 212.

FTP. Select the FTP check box to enable File Transfer Protocol (FTP). This service is enabled by default and uses default port 21. You cannot change the default port in the corresponding Ports to Scan field.

3.If a protocol uses a port other than the standard service port (for example, port 80 for HTTP), enter this nonstandard port in the Ports to Scan field. For example, if the HTTP

Content Filtering and Optimizing Scans

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