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Securing
This section describes security features, including execution control lists, IDs, and SSL.
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.
Using Notes® Shared Login (NSL) to suppress password prompts
Notes® Shared Login (NSL) allows users to start Notes without having to provide Notes passwords. Instead, they only need to log in to Microsoft™ Windows™ using their Windows passwords.
Notifying users when shared login is activated or deactivated
You can display a pop-up window to notify users after shared login is activated or deactivated on their Notes® clients. The pop-up window can display a standard system message, or a system message along with your own custom message.

Securing
This section describes 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.
  - Certificates
    A certificate is a unique digital signature that identifies a user or server. Server and user IDs contain one or more HCL Notes® certificates. In addition, user IDs may contain one or more Internet certificates that identify users when they use SSL to connect to an Internet server or send a signed S/MIME mail message.
  - Notes clients and two-factor authentication
    HCL Notes client authentication with a Notes ID provides built-in, automatic, two-factor authentication.
  - Password-protection for Notes® and Domino® IDs
    To ensure the security of the Domino® system, password-protect all Notes® and Domino IDs -- certifier, server, and user. When you password-protect an ID, a key that is derived from the password encrypts the data on the ID. Then, when you attempt to access mail, open a server-based database, or examine ID file information, you are prompted to enter a password.
  - The password quality scale
    When creating passwords for user, server, or certifier IDs, you need to understand the criteria by which Domino® measures password strength and security. Domino measures this criteria according to the level assigned on its password quality scale. The scale assigns a minimum level of quality to the password on an ID file. Domino bases the password quality on the number and variety of characters in the password.
  - Verifying user passwords during authentication
    You can enable password verification so that a Notes® user can authenticate with a server only after providing the correct password that is associated with the user ID.
  - Setting up password verification
    You can enable password verification through the use of a security policy settings document, which allows you to enable this feature for multiple users, or you can enable password verification on an individual basis through the Domino® Directory.
  - Custom password policies
    Information protection and data privacy laws include specific requirements for the selection of secure passwords for identity verification. To help users comply with these laws, HCL Domino® includes the ability to implement password restrictions on a policy basis. Administrators can enforce password requirements that will fit almost any set of corporate or government security requirements.
  - Assigning multiple passwords to server and certifier IDs
    To assign multiple passwords to server and certifier IDs, all of the administrators whose passwords will be assigned to the ID must be present. Then, during the procedure of assigning multiple passwords, each administrator completes a series of steps.
  - Using Notes® Shared Login (NSL) to suppress password prompts
    Notes® Shared Login (NSL) allows users to start Notes without having to provide Notes passwords. Instead, they only need to log in to Microsoft™ Windows™ using their Windows passwords.
    - Enabling shared login
      Use a Security Settings document and a Policy document to enable shared login. The feature is disabled by default.
    - Disabling shared login
      If you previously allowed or required users to use shared login but now want to prevent its use, edit the Security Settings document. Alternatively you can remove users from the policy assignment or remove the Security Settings document.
    - Notifying users when shared login is activated or deactivated
      You can display a pop-up window to notify users after shared login is activated or deactivated on their Notes® clients. The pop-up window can display a standard system message, or a system message along with your own custom message.
  - Using Notes® Client Single Logon to synchronize Notes® and Windows™ OS passwords
    You can use Notes® Client Single Logon to synchronize your Notes users' Microsoft™ Windows™ passwords with their Notes passwords, allowing them to use the same password.
  - Notes® ID vault
    The ID vault is an optional, server-based database that holds protected copies of Notes® user IDs. An ID vault allows administrators and users to easily manage Notes user IDs. Users are assigned to a vault through policy configuration, and copies of user IDs are uploaded to a vault automatically once the policy has taken effect.
  - ID recovery
    Use of the ID vault for ID recovery is strongly recommended. However, the ID recovery feature described in this topic is still supported.
  - Public key security
    Every Notes® user ID and Domino® server ID has a unique public key for the Notes certificate. The public key is stored in an ID file and in the Person or Server document for that ID in the Domino Directory. Notes and Domino use the public key to authenticate users and servers, verify digital signatures, and encrypt messages and databases. A Notes user ID can also have a unique public key for an Internet certificate.
  - User and server key rollover
    Key rollover is the process used to update the set of Notes® public and private keys that is stored in user and server ID files. Periodically, this set of keys may need to be replaced -- as a precaution against undetected compromise of the private key; as a remedy to recover from a known compromise of the private key; or to increase security by updating to a larger key.
  - Certificate authority key rollover
    HCL Domino® administrators can assign a new set of public and private keys to a Domino certificate authority (CA). These keys are used to certify the keys of OUs, servers, and users in that organization. The process of assigning news keys is known as key rollover.
  - Using cross-certificates to access servers and send secure S/MIME messages
    Domino® uses both Notes® and Internet cross-certificates. Notes cross-certificates allow users in different hierarchically-certified organizations to access servers and to receive signed mail messages. Internet cross-certificates allow users to receive signed mail messages and send encrypted mail messages.
  - Adding cross-certificates to the Domino® Directory or Contacts
    You can use several methods to obtain an HCL Notes® or Internet cross-certificate.
- 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.
- 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.

Notifying users when shared login is activated or deactivated

You can display a pop-up window to notify users after shared login is activated or deactivated on their Notes® clients. The pop-up window can display a standard system message, or a system message along with your own custom message.

Procedure

Open the Security Settings document used for the shared login configuration in edit mode, and click the Password Management > Notes Shared Login tab.

Depending on whether you are activating or deactivating an account, complete these fields in either the Activation Notification section or the Deactivation Notification section to control how to notify users when shared login is in effect on their clients:

Table 1. Notification options
Field	Description
System dialog	Displays the system message in a pop-up window.
No notification (default)	Displays the system message in the Notes® status bar, startup window, and log.nsf only.
Custom message text	Displays the system message in a pop-up window and the text `Additional information from your administrator` followed by a custom message of up to 256 characters. If the custom text includes a Web address, users can copy the address to their browsers.

Results

Activation notification: All three options display the following system message text in the Notes® status bar, Notes® startup window, and LOG.NSF:

Notes shared login with the operating system is now enabled. You will not be prompted to enter a password the next time you launch Notes on this machine.

Deactivation notification: All three options display the following system message text in the Notes® status bar, Notes® startup window, and LOG.NSF:

Notes shared login with the operating system is now disabled. The next time you start Notes, you will be prompted for your password.