If no match is found to any ACE in all relevant ACLs, the frame is dropped by default. If the frame matches none of the ACE filters, the next ACL is processed. If the frame matches an ACE filter of the first ACL, the ACE action takes place. When a frame is received on a port, the switch processes the frame through the first ACL.
You should now have configured a MAC-based ACL on your switch. (Optional) Click Save to save settings in the startup configuration file. Enter the name of the new ACL in the ACL Name field. Log in to the web-based utility then go to Access Control > MAC-Based ACL.
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This article provides instructions on how to configure MAC-based ACL and ACE on your Managed Switch. If you do not configure access lists on your network devices, all packets passing through the switch or router could be allowed onto all parts of your network. You should use access lists to provide a basic level of security for accessing your network. Once the ACE is created, it is applied to an ACL. An Access Control Entry (ACE) contains the actual access rule criteria. However, packets from LAN to LAN port will not be checked. It then uses the matched results to permit or deny this packet. If a packet is coming from a wireless access point to a Local Area Network (LAN) port or vice versa, this device will check if the source MAC address of the packet matches any entry in this list and checks the ACL rules against the content of the frame.
Media Access Control (MAC)-based Access Control List (ACL) is a list of source MAC addresses that use Layer 2 information to permit or deny access to traffic. An ACL contains the hosts that are permitted or denied access to the network device. It blocks or allows users to access specific resources. An Access Control List (ACL) is a list of network traffic filters and correlated actions used to improve security.
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