Contents
- 1 What is the difference between static dynamic and sticky port security?
- 2 Which security feature in a Cisco router is used to prevent DHCP starvation attack?
- 3 What is the importance of port security?
- 4 Which is the default port security sticky or static?
- 5 Why is Cisco port security sticky in 3650?
- 6 Where are static and dynamic port addresses stored?
What is the difference between static dynamic and sticky port security?
Static secure MAC addresses – configured manually with switchport port-security mac-address mac-address. Sticky secure MAC addresses – like Dynamic secure MAC addresses, MACs are learned dynamically but are saved in the running configuration.
Which security feature in a Cisco router is used to prevent DHCP starvation attack?
DHCP snooping
Additional features in the Catalyst family of switches, such as the DHCP snooping, can be used to help guard against a DHCP starvation attack. DHCP snooping is a security feature that filters untrusted DHCP messages and builds and maintains a DHCP snooping binding table.
What is the sticky option in port security?
Sticky MAC is a port security feature that dynamically learns MAC addresses on an interface and retains the MAC information in case the Mobility Access Switch reboots.
What is the importance of port security?
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.
Which is the default port security sticky or static?
Port security defaults use dynamically learned MACs or “sticky” MAC addresses which are always only stored in the running config unless the “static” is entered instead or the running config is saved to the startup config once the MAC is learned. In your example “switchport port-security mac-address sticky” is redundant.
Is the MAC address static or sticky in Cisco?
Statically defined MACs are also preserved in the configuration, so after a reboot they would not need to be relearned. You can configure an interface to convert the dynamic MAC addresses to sticky secure MAC addresses and to add them to the running configuration by enabling sticky learning.
Why is Cisco port security sticky in 3650?
The main reason you have the option is to ‘stick’ the dynamically learned mac-address to the port. In some platforms (eg. in 3650 running (CAT3K_CAA-UNIVERSALK9-M), Version 03.07.01E ) you are not even allowed to run “sticky” with manually assigned MAC addresses.
Where are static and dynamic port addresses stored?
Static secure MAC addresses – configured manually with switchport port-security mac-address mac-address. These MAC addresses are stored in the address table and in the running configuration of the switch. Dynamic secure MAC addresses – are dynamically learned by the switch and stored in its MAC address table.