Web filtering

When the users of your network send requests for web access, Web Gateway filters these requests, as well as the responses that are sent back from the web. Embedded objects sent with requests and responses are also filtered.

Web filtering is controlled by rules, which you can review and modify to let them suit your web security policy.

The following fields of web security are covered by default rule sets on Web Gateway:

  • Anti-malware filtering — Blocks access to web objects that are infected by viruses and other malware using the Gateway Anti-Malware default rule set.
  • URL filtering — Blocks or allows access to web objects with particular URLs

    URL filtering is covered by two default rule sets: URL Filtering and Dynamic Content Classification.

  • Media type filtering — Blocks or allows access to web objects that belong to particular media types using the Media Type Filtering default rule set.
  • Global whitelisting — Allows access to web objects before any of the rules for the above filtering methods are applied using the Global Whitelist default rule set.

The SSL Scanner rule set is already provided for SSL scanning in the default system, but not yet enabled. SSL scanning enables the filtering of requests that are sent on SSL-secured connections.

You can implement web filtering rules to enhance web filtering on these and other fields of web security. by importing suitable rule sets from the rule set library. This library offers, for example, rule sets for application and HTML filtering.