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One Identity Safeguard for Privileged Sessions 7.4 - Administration Guide

Preface Introduction The concepts of One Identity Safeguard for Privileged Sessions (SPS)
The philosophy of One Identity Safeguard for Privileged Sessions (SPS) Policies Credential Stores Plugin framework Indexing Supported protocols and client applications Modes of operation Connecting to a server through One Identity Safeguard for Privileged Sessions (SPS) Archive and backup concepts Maximizing the scope of auditing IPv6 in One Identity Safeguard for Privileged Sessions (SPS) SSH host keys Authenticating clients using public-key authentication in SSH The gateway authentication process Four-eyes authorization Network interfaces High Availability support in One Identity Safeguard for Privileged Sessions (SPS) Versions and releases of One Identity Safeguard for Privileged Sessions (SPS) Accessing and configuring One Identity Safeguard for Privileged Sessions (SPS)
Cloud deployment considerations The Welcome Wizard and the first login Basic settings
Supported web browsers The structure of the web interface Network settings Configuring date and time System logging, SNMP and e-mail alerts Configuring system monitoring on SPS Data and configuration backups Archiving Cleaning up audit data Using plugins Forwarding data to third-party systems Starling integration
User management and access control
Login settings Managing One Identity Safeguard for Privileged Sessions (SPS) users locally Setting password policies for local users Managing local user groups Managing One Identity Safeguard for Privileged Sessions (SPS) users from an LDAP database Authenticating users to a RADIUS server Authenticating users with X.509 certificates Authenticating users with SAML2 Managing user rights and usergroups Creating rules for restricting access to search audit data Displaying the privileges of users and user groups Listing and searching configuration changes
Managing One Identity Safeguard for Privileged Sessions (SPS)
Controlling One Identity Safeguard for Privileged Sessions (SPS): reboot, shutdown Managing One Identity Safeguard for Privileged Sessions (SPS) clusters Managing a High Availability One Identity Safeguard for Privileged Sessions (SPS) cluster Upgrading One Identity Safeguard for Privileged Sessions (SPS) Managing the One Identity Safeguard for Privileged Sessions (SPS) license Accessing the One Identity Safeguard for Privileged Sessions (SPS) console Sealed mode Out-of-band management of One Identity Safeguard for Privileged Sessions (SPS) Managing the certificates used on One Identity Safeguard for Privileged Sessions (SPS)
General connection settings HTTP-specific settings ICA-specific settings MSSQL-specific settings RDP-specific settings SSH-specific settings Using Sudo with SPS Telnet-specific settings VMware Horizon View connections VNC-specific settings Indexing audit trails Using the Search interface Advanced authentication and authorization techniques Reports The One Identity Safeguard for Privileged Sessions (SPS) REST API One Identity Safeguard for Privileged Sessions (SPS) scenarios Troubleshooting One Identity Safeguard for Privileged Sessions (SPS)
Network troubleshooting Gathering data about system problems Viewing logs on One Identity Safeguard for Privileged Sessions (SPS) Changing log verbosity level of One Identity Safeguard for Privileged Sessions (SPS) Collecting logs and system information for error reporting Collecting logs and system information of the boot process for error reporting Support hotfixes Status history and statistics Troubleshooting a One Identity Safeguard for Privileged Sessions (SPS) cluster Understanding One Identity Safeguard for Privileged Sessions (SPS) RAID status Restoring One Identity Safeguard for Privileged Sessions (SPS) configuration and data VNC is not working with TLS Configuring the IPMI from the BIOS after losing IPMI password Incomplete TSA response received Using UPN usernames in audited SSH connections
Using SPS with SPP Configuring external devices Using SCP with agent-forwarding Security checklist for configuring One Identity Safeguard for Privileged Sessions (SPS) Jumplists for in-product help Configuring SPS to use an LDAP backend Glossary

Supported encryption algorithms

The following tables contain all the encryption algorithms you can configure One Identity Safeguard for Privileged Sessions (SPS) to recognize. If you use a configuration that is only partially supported, SPS might ignore the connection without warning.

NOTE: Do not use the CBC block cipher mode, or any sha1-based KEX, MAC, or host key algorithm, which are considered weak.

Key exchange algorithms

The default SPS configuration for both the client and the server is the following:

ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256

The following key exchange (KEX) algorithms are recognized:

Figure 247: Key exchange (KEX) algorithms

Key exchange (KEX) Default Comment
ecdh-sha2-nistp256  
ecdh-sha2-nistp384
ecdh-sha2-nistp521
diffie-hellman-group1-sha1 - Not recommended
diffie-hellman-group14-sha1 - Not recommended
diffie-hellman-group14-sha256
diffie-hellman-group15-sha512 -
diffie-hellman-group16-sha512
diffie-hellman-group17-sha512 -
diffie-hellman-group18-sha512
diffie-hellman-group-exchange-sha256
diffie-hellman-group-exchange-sha1 - Not recommended

During an SSH session, SPS performs a key re-exchange after each gigabyte of transmitted data or after each hour of connection time, whichever comes sooner.

Cipher algorithms

The default SPS configuration for both the client and the server is the following:

aes128-ctr,aes192-ctr,aes256-ctr

The following cipher algorithms are recognized:

Figure 248: Cipher algorithms

Cipher algorithm Default Comment
3des-cbc Not recommended
blowfish-cbc Not recommended
twofish256-cbc Not recommended
twofish-cbc Not recommended
twofish192-cbc Not recommended
twofish128-cbc Not recommended
aes256-cbc Not recommended
aes192-cbc Not recommended
aes128-cbc Not recommended
aes256-ctr
aes192-ctr
aes128-ctr
serpent256-cbc Not recommended
serpent192-cbc Not recommended
serpent128-cbc Not recommended
arcfour Not recommended
idea-cbc Not recommended
cast128-cbc Not recommended
none Means no cipher algorithm; not recommended
Message authentication code (MAC) algorithms

The default SPS configuration for both the client and the server is the following:

hmac-sha2-256,hmac-sha2-512

The following MAC algorithms are recognized:

Figure 249: Message Authentication Code (MAC) algorithms

MAC Default Comment
hmac-sha1 Not recommended
hmac-sha1-96 Not recommended
hmac-md5 Not recommended
hmac-md5-96 Not recommended
hmac-sha2-256  
hmac-sha2-512  
SSH compression algorithms

The default SPS configuration for both the client and the server is the following:

none

The following SSH compression algorithms are recognized:

Figure 250: SSH compression algorithms

SSH compression algorithm Default Comment
zlib Not recommended
none Means no compression
Host key algorithms

The default SPS configuration for both the client and the server is the following:

ecdsa-sha2-nistp256,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa

The following host key algorithms are recognized:

Figure 251: Host key algorithms

Host key algorithms Default Comment
ecdsa-sha2-nistp256  
ssh-ed25519
rsa-sha2-512
rsa-sha2-256
ssh-rsa

Not recommended

NOTE: The ssh-rsa public key signature algorithm that depends on SHA-1 is not recommended and will be disabled in a future release.

Using Sudo with SPS

With the SPS and Sudo integration, you can collect and analyze Sudo session recordings, called iologs in Sudo terminology, in SPS.

By using SPS to collect and analyze Sudo session recordings, your Sudo recordings are stored and indexed by SPS, and you can use the Search interface, for example, to view the recordings, list commands executed during a Sudo session, and so on.

To be able to use Sudo with SPS, perform the following settings:

  1. In SPS, create a new Sudo connection as described in Setting up Sudo connections in SPS.

  2. On the client side, configure Sudo as described in Configuring Sudo.

Setting up Sudo connections in SPS

To enable the SPS and Sudo integration, perform the following steps in SPS.

For a detailed description on configuring connections, see General connection settings.

Prerequisites
  • You have the SPS license required to integrate SPS and Sudo. For more information, contact our Sales Team.

  • An X.509 certificate and its private key to encrypt the communication between the client and SPS. Use your own PKI system to generate these certificates, as they cannot be created on SPS.

To create a Sudo connection in SPS

  1. Navigate to Sudo iolog Control > Connections.

    Figure 252: Sudo iolog Control > Connections — Creating a Sudo connection in SPS

  2. Since SPS can have multiple network interfaces, select an IP address where the Sudo clients can send the iologs. If required, you can change the port number.

  3. TLS is disabled by default as you have to configure certificates manually. Make sure that you enable it as iologs carry highly sensitive information.

    To require encryption, select TLS. When the connection is encrypted, SPS has to show a certificate to the peer.

  4. Select the certificate to show to the peers.

    1. Generate and sign a certificate for SPS in your PKI system, and export the certificate and its private key.

    2. Select Use the same certificate for each connection.

    3. Select Private key for host certificate, click and upload the private key.

    4. Select X.509 host certificate, click and upload the certificate.

  1. Select how SPS should authenticate the peers.

    • To permit connections from peers without requesting a certificate, select No certificate is required.

    • To permit connections only from peers with a valid certificate that was signed by a specific CA, complete the following steps.

      1. Create a list of trusted Certificate Authorities that will be used to validate the certificates of the peers. For details on creating a trusted CA list, see Verifying certificates with Certificate Authorities.

      2. Select Only accept certificates authenticated by the trusted CA list.

      3. Select the certificate authority list to use in the Trusted CA field.

  2. Select Enable indexing.

    Figure 253: Sudo iolog Control > Enable indexing — Select indexing policy

    • To determine the priority level of indexing this connection, select the appropriate Priority level. Selecting a high priority level means that the trails of this connection are indexed first. Selecting a low priority level means that the trails of this connection are also indexed, but there might be a delay in indexing if there are a lot of high-priority connections waiting to be indexed. Selecting near real-time means that the indexing of sessions starts when sessions are still ongoing.

    • Select the Indexing policy to be used.

      Both built-in indexer policies feature automatic language detection. To specify a particular language detection configuration, select the indexing policy if you have created before. For more information, see Configuring the internal indexer.

  3. To limit the number of new connection requests accepted from a single client IP address per minute, enter the maximum number of accepted connections into the Connection rate limit field.

    Figure 254: Sudo iolog Control > Connections — Additional settings

  4. Enter how long SPS (in days) should keep the metadata into the Delete search metadata from SPS after field. For example, if you specify 365, SPS deletes the data of connections older than a year. Enter zero (0) to keep the data indefinitely (this is also the default behavior of SPS).

  5. If configured, select a policy to control various aspects of the connection. For more information, see Policies.

  6. If you want to find out if the audit trail file of a relevant indexed session has already been downloaded, select Log audit trail downloads.

  7. Optional: To set a verbosity level for this connection, select Override verbosity level and select the desired log level from the Connection specific verbosity level field.

    NOTE: The new verbosity level applies only to new sessions started after committing the change. The verbosity level of active sessions do not change.

  8. Click .

    Before you can use the SPS and Sudo integration, perform the Sudo-side configuration steps as described in Configuring Sudo.

Configuring Sudo

To enable the SPS and Sudo integration, perform the following steps on the client side.

Prerequisites
  • For Sudo, you need a host with Sudo 1.9 or higher installed.

  • You have the SPS license required to integrate SPS and Sudo. For more information, contact our Sales Team.

  • For SPS, you have configured Sudo iolog connections as described in Setting up Sudo connections in SPS.

To enable the SPS and Sudo integration

  1. In Sudo, open the sudoers file using visudo.

  2. Add the following lines:

    Defaults ignore_iolog_errors
    Defaults log_servers = <IP of SPS>:<PORT of SPS>
    Defaults log_output
    Defaults log_input			 

    Where the options are as follows:

    Table 11: Options for the Sudo-side configuration
    Option Description

    ignore_iolog_errors

    Allow running commands even if sudoers cannot write to the I/O log.

    log_servers

    Specify the IP address of your SPS. Additionally, you can specify the port number of SPS. If you use Transport Layer Security (TLS) for encryption, you must also specify it as described below.

    log_output

    Enable recording any change, which appears on the screen.

    log_input

    Ensure recording of any user input, that is, anything the user types.

  3. To require encryption (recommended), use TLS as follows:

    • Configure the log_servers option in the sudoers file:

      Defaults log_servers = <IP of SPS>:<PORT of SPS>(tls)
    • Configure the log_server_cabundle, log_server_peer_cert, or log_server_peer_key settings with the required TLS settings. For more information, see Securing server connections in the Sudoers Manual.

      For example, add the path to the certificate authority bundle file in .pem format as shown in the example below:

      Defaults log_server_cabundle = <path_to_PEM_file>/<file_name>.pem
Expected result

On the client side, start typing sudo and open any program.

In SPS, you can view the session using the Search interface.

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