Questions tagged [port-security]

Port security is a technique for securing switchports by restricting inrgess traffic by limiting the MAC addresses that are allowed to send traffic into the port.

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8answers
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How can I stop an intruder plugging into an Ethernet wall socket getting access to the network?

Is MAC address filtering the most suitable option to prevent someone connecting their own device to the network by plugging into Ethernet wall sockets? What if they unplug a device and clone its MAC?
5
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1answer
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Why is option 82 required for DHCP when you use `ip verify source port-security`?

Learning about security features on Cisco switches and came across the requirement to use option 82 with DHCP when you enable ip verify source port-security on an interface. How is this different ...
3
votes
2answers
382 views

Dynamic ARP Inspection - Does it check port in the binding database?

It is mentioned that DAI check for correct IP/MAC combination using the DHCP binding database. It is also mentioned that DAI is turned on for an entire VLan and not on a per port basis. If PCA (macA,...