identity-security-hardening

Consolidate security hardening guidance for Duende IdentityServer deployments.

10|2|Updated Mar 16, 2026
One-click install
npx skills add https://github.com/DuendeSoftware/duende-skills --skill identity-security-hardening
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: identity-security-hardening
Source: https://github.com/DuendeSoftware/duende-skills/tree/main/skills/identity-security-hardening
Command: npx skills add https://github.com/DuendeSoftware/duende-skills --skill identity-security-hardening

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Security hardening for Duende IdentityServer deployments, covering TLS, key management, CSP, CORS, rate limiting, token lifetimes, PKCE, and session controls to reduce attack surface.

Core Features & Use Cases

  • Comprehensive guidance for production-grade IdentityServer hardening across transport, keys, tokens, and UI.
  • Practical patterns for HTTPS/HSTS, key rotation, CSP/CORS, rate limiting, and back-channel logout.
  • Use Case: Security-conscious deployments requiring RFC-aligned security patterns and compliance-ready configurations.

Quick Start

Read this Skill to implement a multi-pattern hardening plan in a live IdentityServer environment.

Frequently Asked Questions about identity-security-hardening

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I harden IdentityServer for a production deployment?

To harden IdentityServer for production, enforce HTTPS and HSTS, enable automatic key rotation, apply strict token lifetimes, validate redirect URIs, and configure rate limiting to minimize the attack surface.

What is the best way to configure CORS and CSP policies in IdentityServer?

Configuring CORS and CSP in IdentityServer involves setting strict cross-origin resource sharing rules and content security policies to prevent unauthorized external access and mitigate cross-site scripting threats.

How does PKCE improve OAuth2 security in IdentityServer?

PKCE improves OAuth2 security by binding the authorization request to the token request, preventing interception attacks during the redirect flow for public IdentityServer clients.

Can I use rate limiting to protect IdentityServer login endpoints?

Yes, applying rate limiting to IdentityServer endpoints protects against brute-force credential attacks and mitigates denial-of-service attempts by restricting excessive incoming request volumes.

What token constraints should I apply for IdentityServer session hardening?

Session hardening requires implementing strict token constraints, including short token lifetimes, audience validation, and robust back-channel logout to ensure compromised tokens are quickly invalidated.

Does IdentityServer support automatic key rotation for TLS and signing keys?

IdentityServer supports automatic key rotation for cryptographic signing keys, ensuring continuous transport security and seamless key management without manual operational intervention.