> For the complete documentation index, see [llms.txt](https://doc.engenius.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.engenius.ai/home-ecs-user-manual/security/port-security.md).

# Port Security

Network security can be increased by limiting access on a specific port to users with specific MAC addresses. Port Security prevents unauthorized devices to the switch prior to stopping the auto-learning processing.

Click **Edit** to update the system settings.

![](/files/6h0GC7O7K3UgKqwdrsFV)

| Port            | Displays the port for which the port security is defined.                                              |
| --------------- | ------------------------------------------------------------------------------------------------------ |
| State           | Select Enabled or Disabled for the port security feature for the selected port.                        |
| Max MAC Address | Enter the maximum number of MAC addresses that can be learned on the port. The range is from 1 to 256. |

![](/files/TNde88lBPVV99PAV12kH)

Click the **Apply** button ![](https://lh4.googleusercontent.com/XMTT8fQ_7-ZeiTvPvRukhv4L0AWct-vSxOhJ3FoFWDUz8lDDOjnB8z3TS4i_dfpCcqDBxi9QK4HLZqqmzieIB9UCQ1h53_LAGhePHU3Qf2lhtLDRweUMCw4lAm_zW7gnMjcOFfg) to accept the changes or the **Cancel** button ![](https://lh4.googleusercontent.com/jJmheoNlaq72LJAXVDSIwNSMs0tSJ8vbDx8UOLAI0IBsDdBZIIDh3GYCbel72dhgAeKuBGcf3SZ3GtC3LCTu9yuKIXTWrYmvZ9c6qgWAr1IfYNoN98KfsdWYobvrFEqGe7xpwYo) to discard them.


---

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