What is switch port security intended and used for?

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.

What is the purpose of configuring port security in Cisco switches?

Port security enables you to restrict the number of MAC addresses (termed secure MAC addresses) on a port, allowing you to prevent access by unauthorized MAC addresses. It also allows you to configure a maximum number of secure MAC addresses on a given port (and optionally for a VLAN for trunk ports).

What is switch port security and violations?

Switch port security limits the number of valid MAC addresses allowed on a port. … If the maximum number of secure MAC addresses has been reached, a security violation occurs when a devices with a different MAC addresses tries to attach to that port.

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.

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Why is it important to secure your switch?

Since information between computers and larger networks is transferred using routers and switches, they become the primary targets for hacking and information leaking. Thus, to ensure network security, it becomes essential to protect routers and switches against outside tampering.

What are the three types of port security?

On Cisco equipment there are three different main violation types: shutdown, protect, and restrict.

What is the purpose of port security?

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.

How do you show port security violations?

Here is a useful command to check your port security configuration. Use show port-security interface to see the port security details per interface. You can see the violation mode is shutdown and that the last violation was caused by MAC address 0090.

Why is switch port security overlooked?

One of the most overlooked security areas is the configuration of individual switchport security configuration. The reason may be that it requires a more granular configuration; this is because a typical configuration requires the knowledge of the specific MAC address(es) that will be connecting to each switchport.

What is the command in disabling unused switch ports?

Disable Unused Ports

Navigate to each unused port and issue the Cisco IOS shutdown command. If a port later on needs to be reactivated, it can be enabled with the no shutdown command.

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Which device would you use to configure port security?

What can you do? Configure port security on the switch. You’ve just enabled port security on an interface of a Catalyst 2950 switch. You want to generate an SNMP trap whenever a violation occurs.

How do I enable port security on a dynamic port?

Configuration Steps:

1) Your switch interface must be L2 as “port security” is configure on an access interface. 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.

How are ports protected?

The protected ports feature is a safety measure that prevents ports from forwarding traffic to each other, even if they are on the same VLAN. Each port is designated as either protected or unprotected. By default, all ports are unprotected.