FreeIPA

FreeIPA

FreeIPA is an integrated identity management platform that bundles LDAP, Kerberos, DNS, and a certificate authority into a single solution. Instead of hand-rolling LDAP + Kerberos + DNS + CA separately, FreeIPA gives you a production-ready identity stack in one go.

Why FreeIPA?

Component	Role	Why it matters
389-DS	LDAP directory	Centralized user, group, and host storage
MIT Kerberos	Network authentication	Passwordless ticket-based auth with SSO
BIND	DNS service	Service discovery via SRV records, host resolution
Dogtag	Certificate authority	HTTPS, client certs, SSH certificate support
SSSD	Client auth daemon	Caches credentials, supports offline login

Compared to alternatives

Solution	Learning curve	Maintenance	Completeness
DIY LDAP	High	High	Low
DIY LDAP + Kerberos	Very high	Very high	Medium
FreeIPA	Low	Low	High
Active Directory	Low	Low	High

FreeIPA advantages:

• Single initialization, ready out of the box
• Open source, deep Linux ecosystem integration
• Full feature set: auth + DNS + CA + access control
• Clean web UI for administration
• Tight RHEL/Rocky/AlmaLinux integration

Guide structure

This guide walks through a complete FreeIPA deployment on Rocky Linux, from initial server setup to production hardening:

1. Server Deployment : Install and initialize FreeIPA server step by step
2. DNS & Kerberos : Verify DNS records and Kerberos authentication
3. Client Integration : Join Linux clients to the FreeIPA domain
4. User Management : Create users, groups, SSH keys, sudo rules, password policies
5. Troubleshooting : Common errors, debugging, backup/restore, production hardening
6. Command Reference : Quick reference for everyday tasks

Adapted from Dawn’s Blog : FreeIPA Complete Deployment Guide.