Link Wray | Transport Layer Security | Layer Marney | Hopf link | Link Byfield | Weakest Link | Link Wray (album) | link | Kelly Link | Goethe Link Observatory | Dynamic-link library | D-Link | Simple Authentication and Security Layer | Quantum Link | Ozone layer | O. Winston Link | Magic Link | Link BC | Great Belt Fixed Link | Data link | data link | Rhett and Link | Regional Rail Link | Ozone Layer | MPEG-1 Audio Layer II | Montana Rail Link | Link aggregation | Link 16 | Link | link= |
The Domain Name System maps its names to (and from) network-specific addresses (usually IP addresses), which in turn may be mapped to link layer network addresses via Address Resolution Protocol.
Allowing direct data link layer communication between customer nodes exposes the network to various security attacks, such as ARP spoofing.