The Content Filter prevents potentially dangerous content from entering the network. The risks can differ from one company to another depending on many factors, including:
- Sector to which they belong.
- Size
- Governmental restrictions affecting the company
- Arbitrary decisions of IT administrators
- Etc.
The Content Filter protection in Panda GateDefender is both robust and flexible:
- Robust: to prevent all types of possible threats regardless of the type of traffic.
- Flexible: to enable application of corporate security policies adapted to every type of company.
Content filter protection in operation
The filtering of potentially dangerous content takes place on two levels.
- At file level (HTTP, FTP). Scanning the types of files that could represent a danger and filtering according to different criteria:
- Nested compressed files – The maximum level of nesting can be defined.
- Large compressed files – The maximum file size can be defined
- Compressed files containing a large number of files – Configurable by the administrator.
- Dangerous MIME types – Defined in an importable and exportable list.
- Files whose MIME type does not match its extension.
- ActiveX and Applets - White lists and blacklists of senders and domains with controls
- Files with macros or embedded information – Office files, Flash…
- Password protected files – ZIP files, PDF files and Microsoft Office files.
- Files with truncated extensions – CLSID, space, illegal characters…
- Encrypted files in HTTP – Encrypted through PGP.
- Scripts in HTML – embedded or referenced in the code.
- External references in the body or attachments to HTML messages – Referenced files.
- At message level (SMTP, POP3, IMAP4 and NNTP). Scanning the bodies, subjects and structure of messages and filtering according to different criteria:
- By textual content. Lets you define the filtering rules for messages and attachments, by text content for SMTP, POP3, IMAP and NNTP. Messages can be filtered by:
- Subject
- Attachment name
- Message body (text and HTML)
- By no. of recipients. The maximum number of recipients can be defined for inbound, outbound or inbound and outbound mail.
- Nested messages. Nested messages are filtered, as well as attachments to the main messages and the attachments to nested messages.
- Encrypted messages. Files received encrypted with PGP will be filtered.
- Malformed messages. Messages whose content cannot be scanned will be filtered.
- Fragmented messages: Fragmented messages received, which pose a security risk as they cannot be scanned in full, will be filtered
The actions that can be taken on filtered items are:
- Messages:
- Delete the message: The message will be completely deleted.
- Redirect or move the message: It will be sent to the Content Filter quarantine area.
- Just notify: No action will be taken on the content or the item filtered.
- Attachments
- Delete attachment. The attached file will be deleted.
- Delete the message: The message will be completely deleted.
- Redirect or move the message. It will be sent to the Content Filter quarantine area.
- Just notify. The event will be logged, if configured.
- HTTP and FTP file transfers
- Block/delete. The file transfer will be blocked or the filtered file will be deleted.
- Just notify. The event will be logged, if configured.
Benefits
- Improved corporate security: Based on the specific criteria of each company.
- Prevents data loss: Control over the documents that can be transmitted outside the internal network.
To achieve this, in line with its principles of Total Quality and Business Excellence, Panda Security is constantly innovating and working as a team both internally and with its clients, suppliers and strategic allies.
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