Network security group, a set of stateful allow and deny rules that can be attached to a subnet or a NIC.
Also called network security group.
Read more: Microsoft Learn
In the Ultra Transcenders books
AZ-305AZ-104AZ-700SC-500AI-300AI-103AZ-900AZ-400ALZ
Each book explains NSG in context, with comparison tables and the common traps.
Terms in this definition
- Network security group
A collection of allow and deny rules that filter traffic in and out of subnets or network interfaces. If an AKS LoadBalancer Service is unreachable, the rules on the node subnet are worth checking.
- Set
Secret permission in Key Vault for writing secrets; some older material refers to it as Create.
- Deny
An Azure Policy effect that stops any create or update request that would break the policy.
- Subnet
A segment of a VNet's address space from which resources receive private IPs. Azure holds back five addresses per subnet (the first four and the last), leaving 251 usable in a /24 and three in a /29, the smallest IPv4 subnet.
- NIC
Network interface card, the network interface of a VM; NSGs can be associated with it.