An NSG that Is Associated, Names Its Sources, and Ends in a Deny
Every NSG carries default rules nobody wrote; a group with no subnet or NIC association is a rule set in the portal that filters nothing; and SSH and RDP from Internet are the first rules the portal offers. Your allows in priority order with an explicit DenyAllInbound at 4000, subnets associated by the module (none by name), 22 and 3389 from Internet refused unless accepted.
Verification
Static-verifiedPassed: validated and lint-clean (provider-schema-validated for AWS/Azure/GCP; Terraform-language lint elsewhere).
Conformance
- Static validation (fmt · validate · tflint)
- Security scan clean (Checkov)
- Plan tests (mocked: validation rules · outputs)
Provenance
- SHA-256 checksum
- Signature (pending)
Functional
- Live test pending (no cloud run yet)
Last verified 2026-09-14 · how we verify
Use it from the registry
terraform · opentofumodule "network_security_group" {
source = "www.iac-bazaar.com/iac-bazaar/azure-network-security-group/azure"
version = "1.0.0"
}Needs a registry token from /account/tokens. The module itself is free; the account is what identifies you. Full setup: registry docs.
Inputs & outputs
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Documentation
azure-network-security-group
An Azure network security group whose rules name their sources, that is
associated with the subnets it protects, and whose empty state is
written down. Works with Terraform and OpenTofu (>= 1.6), azurerm
provider >= 4.0, < 5.0.
An NSG with no rules still has rules (the platform defaults); an explicit DenyAllInbound at 4000 states the end of the custom list.
An NSG protects what it is associated with. Subnets are associated
here; none needs accept_unassociated_nsg.
SSH and RDP from Internet need accept_remote_access_from_internet.
Verification
Static validation runs tofu fmt, init, validate, tflint and checkov.
This module has not yet had a live test, so it is published as statically
validated with its live test pending and does not carry the live-tested mark.
Usage code & full reference need an account
The complete copy-paste usage, the full input/output reference, and operational notes are free with an account - shown here and bundled in the download. Sign in and this section fills in.
- Usage
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