Security Groups

A Cloud Network Security Group (NSG) is a virtual firewall feature in cloud platforms that applies sets of ingress and egress security rules to control inbound and outbound network traffic for specific resources like virtual network interfaces (VNICs) or instances within a virtual cloud network…

Key facts

First appeared: 2014
Category: technology
Problem solved: Managing fine-grained network access control for instances with identical security postures in a VCN, without relying on broad subnet-level security lists that mix unrelated security requirements.
Platforms: Microsoft Azure, Google Cloud (Firewall Rules), AWS (Security Groups), Oracle Cloud Infrastructure (OCI)

Related technologies

Firewalls
Virtual Private Clouds (VPCs)
Subnets
Virtual Machines (VMs)
Load Balancers

Notable users

Oracle (OCI users)
Microsoft (Azure customers)
Enterprises using multi-tier cloud apps