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Cisco ASA Series Firewall ASDM Configuration Guide
Chapter 29 Configuring Filtering Services
Filtering URLs and FTP Requests with an External Server
Licensing Requirements for URL Filtering
The following table shows the licensing requirements for URL filtering:
Guidelines and Limitations for URL Filtering
This section includes the guidelines and limitations for this feature.
Context Mode Guidelines
Supported in single and multiple context mode.
Firewall Mode Guidelines
Supported in routed and transparent firewall mode.
IPv6 Guidelines
Does not support IPv6.
Identifying the Filtering Server
You can identify up to four filtering servers per context. The ASA uses the servers in order until a server
responds. In single mode, a maximum of 16 of the same type of filtering servers are allowed. You can
only configure a single type of server (Websense or Secure Computing SmartFilter) in your configuration.
Note You must add the filtering server before you can configure filtering for HTTP or HTTPS.
To specify the external filtering server, perform the following steps:
Step 1 In the ASDM main window, choose Configuration > Firewall > URL Filtering Servers.
Step 2 In the URL Filtering Server Type area, click one of the following options:
• Websense
• Secure Computing SmartFilter
Step 3 If you chose the second option, enter the Secure Computing SmartFilter port number if it is different than
the default port number, which is 4005.
Step 4 In the URL Filtering Servers area, click Add.
If you chose the Websense option, the Add Parameters for Websense URL Filtering dialog box appears.
• Choose the interface on which the URL filtering server is connected from the drop-down list.
• Enter the IP address of the URL filtering server.
Table 29-1 Licensing Requirements
Model License Requirement
All models Base License.