Enabling IP filtering using the CLI

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Use the commands in this section to enable IP filtering.

Note

  • The default rules do not place any restrictions on incoming and outgoing packets on ether* interfaces. You may add rules using the CLI. Use caution to not block access to needed network services.

  • IP filtering is automatically enabled when you connect to Managed Defense, described in the Managed Defense Quick Start Guide.

To view the active rules:
  1. Go to CLI enable mode:

    hostname > enable

  2. View the rules:

    hostname # show ip filter
    hostname # show ipv6 filter
To enable IP filtering:
  1. Go to CLI configuration mode:

    hostname > enable

    hostname # configure terminal

  2. Enable IP filtering:

    hostname (config) # ip filter enable

    hostname (config) # ipv6 filter enable

  3. Save your changes:

    hostname (config) # write memory