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    Verifying That Firewall Filters Are Operational

    Purpose

    Verify that firewall filters are working properly after you apply them to ports, VLANs, or Layer 3 interfaces.

    Action

    Use the show firewall operational mode command to verify that the firewall filters are working properly:

    user@switch> show firewall
    Filter: egress-vlan-watch-employee
    Counters:
    Name                                                Bytes              Packets
    counter-employee-web                                    0                    0
    Filter: ingress-port-limit-tcp-icmp
    Counters:
    Name                                                Bytes              Packets
    icmp-counter                                          560            	     10
    Policers:
    Name                                              Packets
    icmp-connection-policer                                10
    tcp-connection-policer                                  0
    Filter: ingress-vlan-rogue-block
    Filter: ingress-vlan-limit-guest
    

    Meaning

    The show firewall command displays the names of all firewall filters, counters, and policers that are configured. For each counter that is specified in a filter configuration, the output field shows the byte count and packet count for the term in which the counter is specified. In the above example, the icmp-counter in the filter ingress-port-limit-tcp-icmp shows that the filter matched 10 packets. For each policer that is specified in a filter configuration, the output field shows the packet count for packets that exceed the specified rate limits. The policer icmp-connection-policer shows that 10 ICMP packets were policed.

    Published: 2013-01-17