Can Kerberos be used for SSO?

Particularly as a consequence of Microsoft’s use of Kerberos, Kerberos is very widely used for SSO. Kerberos SSO works by having the first application to authenticate (typically a client login process) share the Ticket Granting Ticket it obtains with other applications.

What is Spnego Kerberos?

About SPNEGO/Kerberos The Simple and Protected GSSAPI Negotiation Mechanism (SPNEGO) is a GSSAPI mechanism you use to secure messages when a client application wants to authenticate to a remote server, but does not know what authentication protocol to use. SPNEGO helps organizations deploy security mechanisms.

How do you use Kerberos authentication in Java?


  1. Create a Kerberos configuration file (krb5.
  2. Place either the krb5.
  3. In the sas.
  4. Also in the sas.
  5. If the authenticationTarget is KRB5, the Java client application must have the wsjaas_client.
  6. If the authenticationTarget is KRB5 and loginSource is the Kerberos credential cache, do the following:

How do I configure Kerberos SSO?

Steps To Setup Kerberos On UBUNTU/RHEL (CentOS)

  1. Step 1: Install Kerberos Client Libraries On The Web Server.
  2. Step 2: Configure the Active Directory domain in the Kerberos Configuration file.
  3. Step 3: Install the auth_kerb module for Apache.
  4. Step 4: Create Keytab file on the AD Domain Controller.

What is the meaning of JAAS?

Java Authentication and Authorization Service
The Java Authentication and Authorization Service (JAAS) is a set of application program interfaces (APIs) that can determine the identity of a user or computer attempting to run Java code and ensure that the entity has the right to execute the functions requested.

What does SPNEGO stand for?

Simple and Protected GSSAPI Negotiation Mechanism
Simple and Protected GSSAPI Negotiation Mechanism (SPNEGO), often pronounced “spenay-go”, is a GSSAPI “pseudo mechanism” used by client-server software to negotiate the choice of security technology.

How does Kerberos work explain with example?

Kerberos is a computer network security protocol that authenticates service requests between two or more trusted hosts across an untrusted network, like the internet. It uses secret-key cryptography and a trusted third party for authenticating client-server applications and verifying users’ identities.

What is difference between SAML and Kerberos?

Kerberos is a lan (enterprise) technology while SAML is Internet. Kerberos requires that the system that requests the ticket (asks for user identity, in a way )is also in the kerberos domain, SAML does not require systems to sign up before.

Is Kerberos faster than NTLM?

Kerberos performance and security is far better than NTLMv1 or NTLMv2. It’s not even up for debate. Every third packet needs to be sent to the domain controller for challenge/response when using NTLM.

What is SPNEGO protocol?

The SPNEGO protocol allows for a negotiation between the client (browser) and the server regarding the authentication mechanism to use. The client identity presented by the browser can be verified by WebSEAL using Kerberos authentication mechanisms.

What is Keytab SSO?

A keytab is a file that contains Kerberos account information (principal name and hashed password) for the device, which is required for SSO authentication. Each authentication profile can have one keytab.

What is the Kerberos Login module for JAAS?

The Kerberos login module for JAAS is capable of reading native caches so that users do not have to authenticate themselves beyond desktop login on platforms that support Kerberos. Moreover, the Kerberos V5 mechanism for Java GSS-API allows credentials to be delegated which enables single sign-on in multi-tier environments.

What are some examples of Kerberos credentials that cannot be delegated?

For example, if a client logs in to a web server using digest authentication, then there are no Kerberos credentials to be delegated, and normal step-by-step Kerberos 5 authentication cannot occur.

Are Kerberos servers trusted?

But not all servers are trusted to the extent that your credentials can be delegated to them. Thus, before a Kerberos provider obtains a delegated credential to send to the peer, it checks the following permission:

Does Kerberos prevent unauthorized use of single sign-on features?

Finally, a number of permissions checks are shown to prevent the unauthorized use of the single-sign on features provided by Kerberos. We thank Gary Ellison, Charlie Lai, and Jeff Nisewanger for their contribution at each stage of the Kerberos single sign-on project.

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