What Is The Maximum Size Of .exe Files Uploaded From The Next Generation Firewall To Wildfire

How to Block HTTP Downloads or Uploads of Specific File Extensions Using App Rules

10/14/2021 1,265 People establish this article helpful 90,972 Views

Clarification

At times it may be necessary to block entire File Extensions from entering or leaving your network. Blocking file extensions from emails and other advice is a common practice to aid foreclose CryptoLocker attacks, leaking sensitive company data, and other intrusions or violation of network policy.

The SonicWall can block downloads for any File Extension going over HTTP, FTP, and other unencrypted Protocols. This is performed using the App Rules Feature as demonstrated beneath.

Circumspection: By default the SonicWall cannot block File Extensions over HTTPS or other Encrypted Protocols. This is because the SonicWall cannot examine encrypted payloads, to get around this DPI-SSL is required as a Feature on the SonicWall.

Resolution

Resolution for SonicOS 6.v

This release includes meaning user interface changes and many new features that are different from the SonicOS 6.2 and before firmware. The below resolution is for customers using SonicOS 6.5 firmware.

1.Login to the SonicWall Management GUI.

2. Click on MANAGE ,Navigate toObjects | Match Objects and click on "Add New Match Object".

iii. Set Match Object Type to "HTTP URI Content".

4. Add all File Extensions that you would like to block (".ZIP", ".RAR" and ".EXE" in this case).

5. Navigate toRules | App Rules and click on "Add together New Policy". Enter a Friendly Proper name under "Policy Name".

vi. Fix Policy Type to "HTTP Client, SMTP Client, FTP Client, or POP3 Customer" depending on which Protocol you're attempting to block. Specify Source or Destination Address if needed, Any will utilize to all traffic.

TIP: It's possible to block a wide range or Protocols depending on the Policy Type. Custom Policies are Protocol neutral and cake past Match Object.

vii. Set "Match Object" to the one that you've already created.

8.Ready Activity Object to Reset/Drop.

9. Set Users/Groups Included or Excluded as required.

TIP: Users/Groups provides a powerful fashion to exclude or include only specific Users in the App Rules Policy. App Rules can make use of LDAP Groups or Local Groups.

TIP: It is possible to set additional fields, such as Schedule and Direction, to farther specify when and where a Policy should be practical.

CAUTION: Once again, App Rules cannot block HTTPS Content without DPI-SSL setup on the SonicWall.

Resolution for SonicOS six.two and Below

The below resolution is for customers using SonicOS 6.two and earlier firmware. For firewalls that are generation half-dozen and newer we suggest to upgrade to the latest general release of SonicOS six.5 firmware.

1.Login to the SonicWall Management GUI.

2. Navigate to Firewall | Match Objects and click on "Add New Match Object".

iii. Set Match Object Type to "HTTP URI Content".

4. Add all File Extensions that you would similar to block (".ZIP", ".RAR" and ".EXE" in this case).

five. Navigate to Firewall | App Rules and click on "Add New Policy". Enter a Friendly Proper noun under "Policy Name".

6. Gear up Policy Type to "HTTP Client, SMTP Client, FTP Client, or POP3 Client" depending on which Protocol y'all're attempting to cake. Specify Source or Destination Address if needed, Any will apply to all traffic.

TIP: It's possible to block a wide range or Protocols depending on the Policy Type. Custom Policies are Protocol neutral and block by Lucifer Object.

7. Set "Friction match Object" to the i that yous've already created.

eight.Set Action Object to Reset/Drop.

9. Set Users/Groups Included or Excluded every bit required.

TIP: Users/Groups provides a powerful fashion to exclude or include only specific Users in the App Rules Policy. App Rules tin make use of LDAP Groups or Local Groups.

TIP: Information technology is possible to set additional fields, such as Schedule and Management, to farther specify when and where a Policy should be practical.

Caution: In one case again, App Rules cannot block HTTPS Content without DPI-SSL setup on the SonicWall.

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Source: https://www.sonicwall.com/support/knowledge-base/how-to-block-http-downloads-or-uploads-of-specific-file-extensions-using-app-rules/170503921808804/

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