Cloud Networking Glossary

Learn the Fundamentals

Classless Inter-Domain Routing (CIDR)

Classless Inter-Domain Routing (CIDR), also called supernetting, is a way to more flexibly allocate Internet Protocol (IP) addresses by creating unique and more granular identifiers for networks and individual devices.

Fully Qualified Domain Name (FQDN)

FQDN stands for Fully Qualified Domain Name. An FQDN is the complete domain name that specifies the exact location of an entity (e.g., server) that is connected to the Internet. It also ties that entity to an IP address.

Network Address Translation (NAT)

Network Address Translation (NAT) is a process that enables resources in private networks to connect to the Internet but prevents entities on the internet to initiate connections with the resources in private network. A device like a router with NAT capability translates the private addresses in the internal network into globally unique public IP addresses, thereby enabling resources in the private network to access resources outside its network (on the internet).

Network Latency

With networking, latency refers to the time it takes a packet of data to be transferred across a network. The delay in delivery is, optimally, as close to zero as possible. Low-latency networks have short delays while high-latency networks have long delays.

Network Load Balancing (NLB)

Network Load Balancing distributes network traffic across a single, virtual cluster of servers or virtual machines using the TCP/IP networking protocol rather than complex routing protocols, such as Border Gateway Protocol (BGP).

Network Load Balancing (NLB)

Network Load Balancing distributes network traffic across a single, virtual cluster of servers or virtual machines using the TCP/IP networking protocol rather than complex routing protocols, such as Border Gateway Protocol (BGP).

Ping

The ping command is a lightweight network connectivity program that encapsulates ICMP echo request/reply payloads into routable IP packets that will test the reachability of any host on the internet with an IP address.

Virtual Private Network (VPN)

A VPN or Virtual Private Network creates a private, encrypted connection over public, shared or private networks. It provides data protection and privacy by using dedicated connections, traffic encryption or secure, virtual tunneling.

Virtual Private Cloud (VPC)

It represents a logical network that is isolated from other resources in the AWS public cloud. VPCs consist of several discrete components and have been described loosely as a “mini datacenter” that runs in AWS. In the VPC, organizations host EC2 instances and other AWS resources.