= OmniAuth::Krb5 OmniAuth strategy for authenticating with Kerberos. Install manually or using Bundler: gem 'omniauth-krb5', :git => 'https://github.com/naffis/omniauth-krb5.git' Add Kerberos provider to omniauth builder: use OmniAuth::Builder do provider :krb5, "CUSTOM.REALM.COM" # provider ... end