User manual SONICWALL SONICOS 5.8 CFS 3.0 FEATURE MODULE REV A

[. . . ] Application Firewall/CFS 3. 0 are not supported on all hardware/software platforms, please refer to your license management page in MySonicWALL to confirm license availability. 2 Content Filtering Service 3. 0 Application Firewall for CFS Application Firewall Policy CFS Policy Type ­ When defining an Application Firewall policy, the Application Object drop down list displays all application objects which have been defined in the previous section as `CFS Category List'. Allowed actions on this policy type include: ­ HTTP Block Page ­ Manage Bandwidth ­ No Action ­ CFS Block Page ­ Packet Monitor Allowed Zones include: ­ LAN ­ DMZ ­ SSLVPN ­ VPN ­ WLAN Note CFS Message Format Checkbox ­ By default, messages are logged in Application Firewall format. This checkbox allows you to log using message format standard for CFS. Content Filtering Service 3. 0 3 CFS 3. 0 Policy Management Overview CFS 3. 0 Policy Management Overview When a CFS policy assignment is implemented using the Application Firewall method, it is controlled by Application Firewall CFS policies in the Application Firewall > Policies page instead of by Users and Zones. While the new Application Firewall method of CFS management offers more control and flexibility, the administrator can still choose the previous user/zone management method to perform content filtering. [. . . ] Check the box to Enable Application Firewall. 6 Content Filtering Service 3. 0 CFS 3. 0 Policy Management Overview Bandwidth Management Methods Bandwidth Management feature can be implemented in two separate ways: · Per Policy Method ­ The bandwidth limit specified in a policy is shared across all actions where it is applied ­ Application Firewall actions share the bandwidth specified in a single policy ­ Example: two policies share a BWM limit of 500kb/s, limiting the total bandwidth between the two policies to 500kb/s · Per Action Aggregate Method ­ Apply the bandwidth management limit specified in a policy individually to each action ­ Application Firewall actions each use the entire bandwidth specified in a policy ­ Example: two policies each have an independent limit of 500kb/s, the total possible bandwidth between those two rules is 1000kb/s 500kb/s BWM Limit Per Policy Action 1 Action 2 cfs exe 500kb/s BWM Limit Per Action Action 1 cfs Action 2 exe Bandwidth Aggregation Method is selected in the Application Firewall Action Settings screen when the Action type is set as Bandwidth Management. Content Filtering Service 3. 0 7 CFS 3. 0 Configuration Examples CFS 3. 0 Configuration Examples This section provides configuration examples using Application Firewall feature to create and manage CFS policies: · · · · Blocking Forbidden Content -- page 8 Bandwidth Managing Content -- page 10 Applying Policies to Multiple Groups -- page 13 Creating a Custom CFS Category -- page 14 Blocking Forbidden Content To create a CFS Policy for blocking forbidden content: · · Create an Application Object -- page 8 Create an Application Firewall Policy to Block Forbidden Content -- page 9 Create an Application Object Create an application object containing forbidden content: Step 1 Step 2 Step 3 Step 4 Step 5 Navigate to the Firewall > Match Objects page in the SonicOS management interface. Click the Add New Match Object button, the Add/Edit Match Object window displays. Enter a descriptive Object Name, such as `Forbidden Content'. Select `CFS Category List' from the Match Object Type dropdown list. Use the checkboxes to select the categories you wish to add to the forbidden content list. Step 6 Click the OK button to add the object to the Application Objects list. 8 Content Filtering Service 3. 0 CFS 3. 0 Configuration Examples Create an Application Firewall Policy to Block Forbidden Content Create an Application Firewall policy to block content defined in the Application Object: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Navigate to the Firewall > App Rules page in the SonicOS management interface. Click the Add Policy button, the Add/Edit Application Firewall Policy window displays. Enter a descriptive name for this action in the Policy Name field, such as `Block Forbidden Content'. Select `CFS' from the Policy Type dropdown list. From the Application Object dropdown list, select the object you created in the previous section. In the case of our example, this object is named `Forbidden Content'. From the Action dropdown list, select `CFS block page' to display a pre-formatted `blocked content' page when users attempt to access forbidden content. Optionally, select the Users/Groups who this policy is to be Included or Excluded on from the dropdown list. Our example uses the defaults of including `all' and excluding `none'. Optionally, select a Schedule of days and times when this rule is to be enforced from the dropdown list. Our example uses `Always On' to always enforce this policy. Optionally, select the checkbox for Log using CFS message format if you wish for the logs to use this format instead of the standard Application Firewall format. `LAN' to enforce the policy on all traffic traversing the local network. Step 10 Optionally, select the appropriate Zone where the policy is to be enforced. Our example uses Step 11 Optionally, select a CFS Allow List to enforce on this particular policy. Step 12 Optionally, select the appropriate CFS Forbidden List to enforce on the particular policy. Step 13 Click the OK button to create this policy. Content Filtering Service 3. 0 9 CFS 3. 0 Configuration Examples Bandwidth Managing Content To create a CFS Policy for applying BWM to non-productive content: · · · Create an Application Object -- page 8 Create a Bandwidth Management Action Object -- page 11 Create an Application Firewall Policy to Block Forbidden Content -- page 9 Create an Application Object for Non-Productive Content Create an application object containing non-productive content: Step 1 Step 2 Step 3 Step 4 Step 5 Navigate to the Firewall > Match Objects page in the SonicOS management interface. Click the Add New Match Object button, the Add/Edit Match Object window displays. Enter a descriptive Object Name, such as `Non-Productive Content'. In the case of our example, this object is named `Nonproductive Content'. [. . . ] This allows for insertion of custom CFS-managed content into the existing and very flexible category structure. To create a new CFS custom category: · · Enable CFS Custom Categories -- page 14 Add a New CFS Custom Category Entry -- page 14 Enable CFS Custom Categories Step 1 Step 2 Step 3 Navigate to the Security Services > Content Filter page in the SonicOS management interface. Scroll down and click the CFS Custom Category section and select the Enable CFS Custom Category checkbox. Click the Accept button to save your changes and enable the Custom Category feature. Add a New CFS Custom Category Entry Step 1 Again in the Security Services > Content Filter page, scroll down to the CFS Custom Category section and click the Add. . . [. . . ]