IaC Bazaar
AWSLive-tested

Network Load Balancer (L4)

A Layer-4 Network Load Balancer with map-driven TCP/UDP/TLS listeners and target groups, modern TLS 1.3 termination from an ACM cert, and self-contained default-VPC networking.

terraformAWS#aws
aws-nlbterraform v1.7

Verification

Live-tested

Really deployed to a cloud sandbox, verified against its outputs and assertions, then destroyed - with the teardown confirmed.

Conformance

  • Static validation (fmt · validate · tflint)
  • Security scan clean (Checkov)
  • Plan test superseded by live test

Provenance

Functional

  • Live-tested - applied, verified, destroyed

Last verified 2026-06-30 · how we verify

Verify this download

cosign · sha-256

Don't take our word for it. Every release is signed with cosign - check the bytes against our pinned public key before you trust them.

# 1. Our pinned public key - fetch once, trust out-of-band
curl -O https://www.iac-bazaar.com/cosign.pub

# 2. This module's Sigstore bundle
curl -o aws-nlb-1.0.0.sigstore.json \
  https://www.iac-bazaar.com/api/artifacts/aws-nlb/signature

# 3. Verify the tarball you downloaded
cosign verify-blob \
  --key cosign.pub \
  --bundle aws-nlb-1.0.0.sigstore.json \
  aws-nlb-1.0.0.tar.gz
# → Verified OK

# 4. (optional) confirm the checksum too
echo "5689403cf092af4585d9bc0f2aa5a7c46d69c450f6e86e1a61e3434163e42d50  aws-nlb-1.0.0.tar.gz" | sha256sum -c
Signature bundlePublic keyMachine-readable receiptHow we verify

Use it from the registry

terraform · opentofu
module "nlb" {
  source  = "www.iac-bazaar.com/iac-bazaar/aws-nlb/aws"
  version = "1.0.0"
}

Paid module — needs a purchase (or a subscription that covers it) plus a registry token from /account/tokens. Full setup: registry docs.

Inputs & outputs

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Documentation

aws-nlb — Network Load Balancer

Layer-4 Network Load Balancer with TCP/UDP/TLS listeners and target groups — drop-in for ultra-low-latency, high-throughput, or static-IP workloads (databases, game servers, MQTT/gRPC backends, anything that needs the client's real source IP). Define target groups and listeners as simple maps; the module wires each listener's default forward action to its target group. Hand it an ACM certificate on a TLS listener and the NLB terminates TLS with a modern TLS 1.3 (1.2-floor) policy.

Self-contained networking: omit subnet_ids and the module discovers every subnet in the account's default VPC (and derives the VPC for the target groups), so a throwaway NLB applies with nothing but a name. Pin explicit subnets for real deployments.

Works with Terraform and OpenTofu (>= 1.6), AWS provider >= 6.0, < 7.0.

Security notes

  • Encryption / TLS: TLS listeners use ELBSecurityPolicy-TLS13-1-2-2021-06 (TLS 1.3 with a TLS 1.2 floor) by default; override per-listener with ssl_policy or globally with default_ssl_policy. TCP listeners pass bytes through unterminated — terminate TLS at the target for end-to-end encryption.
  • Deletion protection defaults on; terraform destroy requires flipping enable_deletion_protection = false and applying first.
  • Security groups: NLB SGs can only be attached at creation and never removed afterwards. With security_group_ids = [] the NLB has no SG and the targets' own security groups govern access (the classic NLB model).
  • Client IP: NLBs preserve the client source IP for instance/ip targets by default; set preserve_client_ip = false per target group to disable, or proxy_protocol_v2 = true to forward connection metadata.
  • Cross-zone is off by default (the AWS default for NLB) to avoid inter-AZ data-transfer charges; enable it for even distribution across AZs.

Requirements

  • Terraform or OpenTofu >= 1.6
  • hashicorp/aws >= 6.0, < 7.0

License

Commercial — IaC Bazaar EULA. © IaC Bazaar. Original work (not derived from a third-party module).

Usage code & full reference unlock after purchase

The complete copy-paste usage, the full input/output reference, and operational notes ship with your licence - shown here and bundled in the download.

  • Usage
  • Inputs
  • Outputs
  • Cost

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