Common Networking Abbreviations

Basic Networking Terms

Abbreviation	Expansion	Description
IP	Internet Protocol	Unique address for devices on a network.
DNS	Domain Name System	Translates domain names to IP addresses.
DHCP	Dynamic Host Configuration Protocol	Automatically assigns IP addresses to devices.
MAC	Media Access Control	Unique hardware address of a network device.
LAN	Local Area Network	Network limited to a small area like a home or office.
WAN	Wide Area Network	Network that spans large geographic areas.
SSID	Service Set Identifier	Name of a Wi-Fi network.
TCP	Transmission Control Protocol	Ensures reliable data delivery.
UDP	User Datagram Protocol	Faster protocol with no guarantee of delivery.
HTTP	HyperText Transfer Protocol	Protocol for web communication.
HTTPS	HyperText Transfer Protocol Secure	Secure version of HTTP.
FTP	File Transfer Protocol	Transfers files over a network.
SMTP	Simple Mail Transfer Protocol	Sends email messages.
POP3	Post Office Protocol 3	Retrieves email from a mail server.
IMAP	Internet Message Access Protocol	Accesses email directly on the server.
NAT	Network Address Translation	Allows multiple devices to share one IP address.
VPN	Virtual Private Network	Securely encrypts your connection over the internet.
QoS	Quality of Service	Prioritizes network traffic.
ARP	Address Resolution Protocol	Maps IP addresses to MAC addresses.
ICMP	Internet Control Message Protocol	Used for network diagnostics.
TTL	Time To Live	Limits how long data packets remain on the network.
MTU	Maximum Transmission Unit	Largest size of a data packet that can be transmitted.
VLAN	Virtual Local Area Network	Creates multiple virtual networks.
PoE	Power over Ethernet	Provides power and data over a single Ethernet cable.
BGP	Border Gateway Protocol	Routes traffic between different networks on the internet.
OSPF	Open Shortest Path First	Interior gateway routing protocol.
STP	Spanning Tree Protocol	Prevents loops in switched networks.
RIP	Routing Information Protocol	Distance-vector routing protocol.
NTP	Network Time Protocol	Synchronizes time across network devices.
SNMP	Simple Network Management Protocol	Monitors and manages network devices.
RDP	Remote Desktop Protocol	Accesses and controls remote computers.
TFTP	Trivial File Transfer Protocol	Simple file transfer protocol with minimal functionality.
SFTP	SSH File Transfer Protocol	Secure file transfer over SSH.
SSH	Secure Shell	Secure protocol for remote login and command execution.
L2TP	Layer 2 Tunneling Protocol	Used with VPNs to create secure tunnels.
GRE	Generic Routing Encapsulation	Encapsulates data for tunneling across networks.