- Switch port security monitors a port to restrict the number of MAC addresses associated with that port in the layer 2 switching table.
- Also possible to make only certain mac addresses only reach the Port.
- Key features of Port Security:
- Limiting the number of MACs that can be associated with the port.
- This limiting of MACs will be done based on following 3 methodes:
- Static configuration of the allowed MAC addresses.
- Dynamic learning of MAC addresses, up to the defined maximum, where dynamic entries are lost upon reload
- Dynamically learning but with the switch saving those entries in the configuration (called sticky learning)