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Securing
This section describes IBM® Domino® security features, including execution control lists, IDs, and SSL.
Using Security Assertion Markup Language (SAML) to configure federated-identity authentication
Federated identity is a means of achieving single sign-on, providing user convenience and helping to reduce administrative cost. In Domino® and Notes®, federated identity for user authentication uses the Security Assertion Markup Language (SAML) standard from OASIS.
Enabling IWA (ADFS only)
When Integrated Windows Authentication (IWA) is used, users on Windows clients are not prompted for the ADFS login name and password when they access servers on the corporate intranet. IWA is available for basic SAML authentication, Notes federated login, and Web federated login.
Creating ADFS service principal names (SPNs)
To enable Integrated Windows Authentication (IWA) on ADFS, create service principal names (SPNs) to associate ADFS with a login account. SPNs allow clients to request authentication without having login account names.

Securing
This section describes IBM® Domino® security features, including execution control lists, IDs, and SSL.
- Overview of Domino security
  Setting up security for your organization is a critical task. Your security infrastructure is critical for protecting your organization's IT resources and assets. As an administrator, you need to give careful consideration to your organization's security requirements before you set up any servers or users. Up-front planning pays off later in minimizing the risks of compromised security.
- Server access for Notes® users, Internet users, and Domino® servers
  To control user and server access to other servers, Domino® uses the settings you specify on the Security tab in the Server document as well as the rules of validation and authentication. If a server validates and authenticates the Notes® user, Internet user, or server, and the settings in the Server document allow access, the user or server is allowed access to the server.
- The database access control list
  Every .NSF database has an access control list (ACL) that specifies the level of access that users and servers have to that database. Although the names of access levels are the same for users and servers, those assigned to users determine the tasks that they can perform in a database, while those assigned to servers determine what information within the database the servers can replicate. Only someone with Manager access can create or modify the ACL.
- Domino® server and Notes® user IDs
  Domino® uses ID files to identify users and to control access to servers. Every Domino server, Notes® certifier, and Notes user must have an ID.
- The execution control list
  You use an execution control list (ECL) to configure workstation data security. An ECL protects user workstations against active content from unknown or suspect sources, and can be configured to limit the action of any active content that does run on workstations.
- Domino® server-based certification authority
  You can set up a Domino® certifier that uses the CA process server task to manage and process certificate requests. The CA process runs as a process on Domino servers that are used to issue certificates. When you set up a Notes® or Internet certifier, you link it to the CA process on the server in order to take advantage of CA process activities. Only one instance of the CA process can run on a server; however, the process can be linked to multiple certifiers.
- SSL security
  Secure Sockets Layer (SSL) is a security protocol that provides communications privacy and authentication for Domino® server tasks that operate over TCP/IP.
- SSL and S/MIME for clients
  Clients can use a Domino® certificate authority (CA) application or a third-party CA to obtain certificates for secure SSL and S/MIME communication.
- Encryption
  Encryption protects data from unauthorized access.
- Name-and-password authentication for Internet/intranet clients
  Name-and-password authentication, also known as basic password authentication, uses a basic challenge/response protocol to ask users for their names and passwords and then verifies the accuracy of the passwords by checking them against a secure hash of the password stored in Person documents in the Domino® Directory.
- Multi-server session-based authentication (single sign-on)
  Multi-server session-based authentication, also known as single sign-on (SSO), allows Web users to log in once to a Domino® or WebSphere® server, and then access any other Domino or WebSphere servers in the same DNS domain that are enabled for single sign-on (SSO) without having to log in again.
- Using Security Assertion Markup Language (SAML) to configure federated-identity authentication
  Federated identity is a means of achieving single sign-on, providing user convenience and helping to reduce administrative cost. In Domino® and Notes®, federated identity for user authentication uses the Security Assertion Markup Language (SAML) standard from OASIS.
  - Preparing for SAML authentication
    Complete the steps in this section before you configure SAML authentication in Domino
  - Configuring basic SAML authentication for Web servers
    Complete the following tasks to enable basic SAML authentication for Web servers.
  - Configuring ID vault servers for federated SAML login
    Complete the steps in this section if you want to use Web federated login or Notes federated login. After enabled, iNotes users and Notes client users, respectively, access the Notes ID file in the ID vault without being prompted for the password. If your IdP is ADFS, you can also configure Integrated Windows Authentication (IWA) so that iNotes users or Notes clients users aren't prompted for the IdP name and password.
  - Enabling Web federated login
    Enable Web federated login to allow iNotes users to perform secure operations such as signing and decrypting messages without being prompted for a Notes ID password.
  - Enabling Notes federated login
    Enable Notes federated login to allow Notes clients users to start Notes and perform secure operations without being prompted for a Notes ID password.
  - Enabling IWA (ADFS only)
    When Integrated Windows Authentication (IWA) is used, users on Windows clients are not prompted for the ADFS login name and password when they access servers on the corporate intranet. IWA is available for basic SAML authentication, Notes federated login, and Web federated login.
    - Creating ADFS service principal names (SPNs)
      To enable Integrated Windows Authentication (IWA) on ADFS, create service principal names (SPNs) to associate ADFS with a login account. SPNs allow clients to request authentication without having login account names.
    - Enabling Integrated Windows Authentication on ADFS 2.0
      Complete this task to enable Integrated Windows Authentication (IWA) on Active Directory Federation Services (ADFS) 2.0.
    - Enabling Integrated Windows Authentication for ADFS 3.0
      Complete this task to enable Integrated Windows Authentication (IWA) on Active Directory Federation Services (ADFS) 3.0.
    - Configure browsers for Integrated Windows Authentication
      Ensure that browsers are configured to support Integrated Windows Authentication (IWA).
  - Generating a certificate to encrypt SAML assertions
    Your organization may require SAML assertions to be encrypted if assertions include attributes that contain sensitive personal data, for example, social security numbers. Domino® encrypts entire SAML assertions; partial encryption of specific attributes is not available.
  - Cautioning client users about SAML and logout
    Domino® and Notes® do not support a single logout feature, so if you configure SAML in your organization, make sure that your users employ safety methods at their desktops to prevent physical access to Notes and Domino resources.
- Using a credential store to share credentials
  In this release, the on-premises Domino® server can use a credential store application (credstore.nsf). The credential store is a secure repository for document encryption keys and other tokens necessary for Notes® client users to grant access to applications that use the OAuth (open authorization) protocol. OAuth allows user credentials to be shared with compliant applications so that users avoid extra password prompts.

Creating ADFS service principal names (SPNs)

To enable Integrated Windows Authentication (IWA) on ADFS, create service principal names (SPNs) to associate ADFS with a login account. SPNs allow clients to request authentication without having login account names.

About this task

If there are already SPNs for ADFS because IWA is already enabled, skip this procedure.

This procedure assumes that you use a single ADFS server. If you use multiple ADFS servers in a federation server farm, see the Microsoft document Manually Configure a Service Account for a Federation Server Farm.

Procedure

On the Active Directory domain controller, log in to the Windows domain as the Windows administrator.
Run the following commands to create two SPNs, a fully-qualified name and a short name:
```
setspn -s HTTP/<server><domain> <server>$
setspn -s HTTP/<server> <server>$
```
where <server> is the ADFS server, <domain> is the Active Directory domain in which the server is listed, and $ represents the local service account.
Note: The HTTP/ portion of the SPN is correct even though HTTPS is used to access the service.
Run the following command to verify that the SPNs are properly created:
```
setspn -L <server>$
```

Example

For example, if the ADFS server is adfs01 and the Active Directory domain is us.renovations.com, use these commands to create and then verify the SPNs:

setspn -s HTTP/adfs01.us.renovations.com adfs01$
setspn -s HTTP/adfs01 adfs01$
setspn -L adfs01$

If you use an LDAP browser to view the Active Directory, you see the computer ADFS01. The computer account name is ADFS01$ and the account record shows the new service principal names.

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