Contents
What is the purpose of port security attack?
The goal of Port Security is to prevent a network attacker from sending large number of Ethernet Frames with forged fake source MAC addresses to a Switch interface.
Why port security is important?
Port security is vital because marine transport is a very thriving and extensively used form of conveyance, especially for cargo transportation. Since the cargo containers could be used inappropriately, it becomes important that proper monitoring and inspection of the transferred cargo is carried out.
Why should you implement port security on a switch interface?
The main reason to use port security in a switch is to stop or prevent unauthorized users to access the LAN. To stop unauthorized telnet or SSH access to a management interface the switch must be secured with passwords at the command line, with the VTY console command.
How do you show port security?
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.
Who is responsible for port security?
The Coast Guard and CBP are the two federal agencies with the strongest presence at seaports. Coast Guard. The Coast Guard is the nation’s principal maritime law enforcement authority and the lead federal agency for the maritime component of homeland security, including port security.
What are the different modes of Port Security?
User can either use restrict, shut down or protect port-security commands. Let’s discuss these violation modes: protect – This mode drops the packets with unknown source mac address until you remove enough secure mac addresses to drop below the maximum value.
What are the benefits of using port security?
The port security feature offers the following benefits: You can limit 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.
What happens if a port is configured as a secure port?
If a port is configured as a secure port and the maximum number of secure MAC addresses is reached, when the MAC address of a station attempting to access the port is different from any of the identified secure MAC addresses, a security violation occurs.
When does port security go into restrictive mode?
After the age time expires, the MAC addresses on the port become insecure. By default, all addresses on a port are secured permanently. If a security violation occurs, you can configure the port to go either into shutdown mode or restrictive mode.