You can make your L3 switch port to an access interface by using the “switchport” command. 2) Then you need to enable port security by using the “switchport port-security” command. This can also be applied in a range of the interfaces on a switch or individual interfaces.
How do I enable port security on a Cisco switch?
To enable sticky port security, enter the switchport port-security mac-address sticky command. When you enter this command, the interface converts all the dynamic secure MAC addresses, including those that were dynamically learned before sticky learning was enabled, to sticky secure MAC addresses.
Why would you enable port security on a switch?
Port Security helps secure the network by preventing unknown devices from forwarding packets. When a link goes down, all dynamically locked addresses are freed. The port security feature offers the following benefits: You can limit the number of MAC addresses on a given port.
Which command will enable port security?
Use the switchport port-security command to enable port-security. I have configured port-security so only one MAC address is allowed. Once the switch sees another MAC address on the interface it will be in violation and something will happen.
What are the three types of port security?
On Cisco equipment there are three different main violation types: shutdown, protect, and restrict.
How do I enable port security on an interface?
You can configure all secure MAC addresses by using the switchport port-security mac-address mac_address interface configuration command. You can allow the port to dynamically configure secure MAC addresses with the MAC addresses of connected devices.
What is the primary feature of port security on a switch?
The switchport security feature (Port Security) is an important piece of the network switch security puzzle; it provides the ability to limit what addresses will be allowed to send traffic on individual switchports within the switched network.
What are the steps involved to configure port security How do we see a security violation?
How do we see a security violation? Todisplaytheport securityconfiguration on an interface, use theshow port-securitycommand. Shutdown – When aviolationoccurs in thismode, the switchport will be taken out of service and placed in the err-disabled state.
What is the benefit of port security?
Port Security Benefits
Allows for limiting the number of MAC addresses on a given port. Packets that have a matching MAC address (secure packets) are forwarded; all other packets (unsecure packets) are restricted. Enabled on a per port basis. When locked, only packets with allowable MAC address will be forwarded.
Can we configure port security on trunk ports?
Port security supports trunks. –On a trunk, you can configure the maximum number of secure MAC addresses both on the trunk and for all the VLANs on the trunk. –You can configure the maximum number of secure MAC addresses on a single VLAN or a range of VLANs.
How does port security identify a device?
Port security uses the MAC address to identify allowed and denied devices. By default, port security allows only a single device to connect through a switch port. You can, however, modify the maximum number of allowed devices.
Is port security enabled by default?
By default, a port security violation forces the interface into the error-disabled state. An administrator must re-enable the port manually by issuing the shutdown interface command followed by no shutdown .
What is port security aging?
The inactivity aging feature prevents the unauthorized use of a secure MAC address when the authorized user is offline. The feature also removes outdated secure MAC addresses so that new secure MAC addresses can be learned or configured.
What does Switchport port security maximum do?
Configures the maximum number of MAC addresses that are permitted by switchport security; by default this is set to 1 MAC address. Configures the switchport security violation mode; by default this is set to shutdown.
What is a port facility security officer?
Person designated as responsible for the development, implementation, revision, and maintenance of the port facility security plan and for liason with the port authorities and Ship Security Officers and Company Security Officer.