| Abbreviation | Definition |
|---|---|
| LEAF | Linux Embedded Appliance Firewall |
| LEARN | Labor Educators Assistance And Redesign Network |
| LEB | Local Error Bars |
| LEC | LAN Emulation Client |
| LEC | Local Exchange Carrier |
| LED | Load, Encode, and Download |
| LEDR | Listening Environment Diagnostic Recording |
| LEGION | Leadership Excellence Growth Integrity Organization Networking |
| LEN | Low Entry Network |
| LER | Label Edge Router |
| LES | LAN (Local Area Network) Emulation Server |
| LES | Loop Emulation Service |
| LFAP | Lightweight Flow Accounting Protocol |
| LFD | Login Failure Daemon |
| LFI | Link Fragmentation and Interleaving |
| LFN | Linux Foundation Networking |
| LFSN | Law Firm Sustainability Network |
| LFT | Layer Four Trace |
| LFT | Layer Four Traceroute |
| LG | Local Group |