Independent consulting for organizations running Apereo CAS.
I help organizations troubleshoot, upgrade, integrate, and improve Apereo CAS environments, including SAML, OpenID Connect, OAuth, MFA, Redis ticket registries, service integrations, and production SSO architecture.
If you are dealing with a difficult CAS issue, planning an upgrade, integrating a new application, or simply need another experienced set of eyes on your environment, I can help.
Need help with Apereo CAS?
Contact me to discuss your environment and what you are trying to accomplish at info@misterpki.com.
Apereo CAS Consulting Services
Apereo CAS is rarely an isolated application. Production CAS environments often depend on directories, MFA providers, Redis, load balancers, application integrations, and federation protocols.
My consulting approach focuses on the entire authentication path rather than looking at CAS configuration in isolation.
CAS Upgrades and Migrations
Upgrading CAS can involve much more than changing a version number.
I can help with:
- Apereo CAS version upgrades
- Overlay and dependency changes
- Configuration migration
- Service registry validation
- SAML and OIDC compatibility
- Redis ticket registry compatibility
- Deployment and rollback planning
Whether you are moving between minor releases or performing a larger upgrade, the goal is to reduce risk and identify compatibility problems before they reach production.
SAML, OpenID Connect, and OAuth
CAS can act as much more than a traditional CAS protocol server.
I can help configure and troubleshoot:
- SAML 2.0
- OpenID Connect
- OAuth 2.0
- Claims and attribute release
- SAML metadata
- Signing and encryption certificates
- Identity provider and service provider integrations
This includes both new integrations and troubleshooting existing applications that are not authenticating correctly.
MFA and Authentication
Modern CAS environments often include multiple authentication methods and MFA requirements.
I can help with:
- Multi-factor authentication
- LDAP authentication
- Active Directory authentication
- Attribute resolution
- Identity federation
- Login flow troubleshooting
Application SSO Integration
Need to connect a new application to CAS?
I can help integrate applications using:
- CAS protocol
- SAML 2.0
- OpenID Connect
- OAuth 2.0
I can also troubleshoot failed or inconsistent SSO behavior involving:
- Redirect loops
- Invalid service errors
- Missing attributes
- Incorrect claims
- Certificate problems
- Metadata problems
- Authentication failures
- Logout behavior
- Session and ticket issues
Redis Ticket Registry and High Availability
CAS ticket storage and high availability can become especially important in larger or redundant environments.
I can help review or troubleshoot:
- Redis ticket registries
- Redis Sentinel
- High availability
- Failover behavior
- Ticket expiration
- Connectivity problems
- Load-balanced CAS environments
- Session behavior
- Production resilience
Apereo CAS Architecture Reviews
If your CAS environment is working but you want to know whether it is designed and configured appropriately, I can perform a focused architecture and configuration review.
A review can include:
- CAS architecture
- Authentication sources
- MFA configuration
- Service registry design
- Federation configuration
- Redis and ticket storage
- High availability
- TLS and certificates
- Attribute release
- Logging
- Upgrade readiness
- Operational risks
- Security considerations
You receive practical recommendations focused on improving reliability, security, and maintainability.
Common Apereo CAS Consulting Engagements
CAS Troubleshooting Session
A focused working session for a specific CAS problem.
This is a good fit for issues such as:
- Broken login flow
- Failed SAML integration
- OIDC configuration problem
- CAS upgrade issue
- Certificate error
- Service registration problem
- Redis ticket registry problem
- Unexpected production behavior
CAS Health and Security Review
A broader review of your CAS deployment, configuration, authentication architecture, federation integrations, certificates, ticketing, and operational risks.
The goal is to identify potential problems before they become outages or security issues.
CAS Upgrade Project
Planning or performing an Apereo CAS upgrade?
I can help evaluate the existing environment, identify breaking changes, test integrations, migrate configuration, validate services, and reduce production upgrade risk.
SAML or OIDC Integration Project
If you need to connect an application to CAS using SAML or OpenID Connect, I can help with the CAS configuration as well as the surrounding certificates, claims, metadata, and application-side requirements.
Why Work With MisterPKI?
CAS problems often cross multiple technical disciplines.
A login problem may actually involve:
- CAS
- SAML
- OpenID Connect
- OAuth
- LDAP
- Active Directory
- MFA
- Redis
- TLS
- Certificates
- Load balancers
- Reverse proxies
- Linux
- Cloud infrastructure
- Application configuration
My background spans identity, authentication, infrastructure, PKI, Linux, automation, and enterprise architecture.
That allows me to troubleshoot the complete authentication path instead of treating CAS as an isolated Java application.
Independent Apereo CAS Consulting
MisterPKI provides independent consulting services for organizations using Apereo CAS.
I am not affiliated with or endorsed by the Apereo Foundation.
Consulting is available remotely and can range from a focused troubleshooting session to a larger upgrade, integration, or architecture project.
Frequently Asked Questions
Can you help with an existing Apereo CAS deployment?
Yes.
Existing CAS environments are an excellent fit for consulting, especially troubleshooting, upgrades, configuration reviews, federation integrations, Redis ticket registries, MFA, certificates, and service integrations.
Can you help upgrade an older CAS environment?
Yes.
I can help review upgrade requirements, configuration changes, dependencies, integrations, certificates, service registrations, authentication flows, and deployment planning.
Do you work with SAML and OpenID Connect?
Yes.
I can help configure and troubleshoot SAML 2.0, OpenID Connect, OAuth 2.0, claims, attributes, metadata, certificates, scopes, and client registrations.
Can you help troubleshoot CAS with Redis?
Yes.
I can help with Redis-backed ticket registries, Redis Sentinel, connectivity, failover, ticket behavior, and CAS configuration related to Redis.
Can you help integrate a new application with CAS?
Yes.
Applications can be integrated using CAS protocol, SAML, OpenID Connect, or OAuth depending on the application and environment.
Can you help with CAS certificate problems?
Yes.
Certificate and PKI issues are a particular area of expertise, including TLS certificates, Java trust stores, Java key stores, signing certificates, encryption certificates, certificate chains, and certificate renewal.
Do you provide remote consulting?
Yes.
Apereo CAS consulting can be performed remotely for organizations anywhere.
Need Help With Apereo CAS?
If you are dealing with a CAS problem, planning an upgrade, integrating an application, or reviewing your SSO architecture, send me a brief description of your environment and what you are trying to accomplish.
Helpful information includes:
- Your current Apereo CAS version
- The problem or project you are working on
- Authentication methods in use
- Whether you use SAML, OIDC, OAuth, or CAS protocol
- Whether Redis or another external ticket registry is involved
- Any relevant error message or behavior
You do not need to send sensitive configuration information in your initial message.
Contact MisterPKI to discuss your Apereo CAS project at info@misterpki.com.