# Types of Credentials used in OpManager

### Monitoring Credentials (SNMP v1/v2, SNMPv3, Telnet, SSH, WMI, VMWare, Citrix, UCS, Nutanix)

OpManager accesses the remote devices using the protocols SNMP, CLI, or WMI. The credentials like the password/SNMP community, port etc., may differ for different device types. Pre-configuring a set of credentials in OpManager helps apply them to multiple devices at a time, saving a lot of manual effort.

**SNMP v1/SNMP v2**: SNMPv1 and SNMPv2 are community-based security models. Enter the Credential name and description. Configure the correct Read and Write community, SNMP Port, SNMP Timeout (in seconds), and SNMP Retries.

**SNMP v3**: SNMP v3 is a user-based security model. It provides secure access to devices by authenticating and encrypting packets over the network. The security features provided in SNMP v3 are Message Integrity, Authentication, and Encryption. If you select SNMPv3 as the credential type, configure the following parameters:

- **Name**: Enter the name of the credential.
- **Description**: Enter a brief description about the credential.
- **User Name**: Enter the name of the user (principal) on behalf of whom the message is being exchanged.
- **Context Name**: An SNMP context name, or "context" in short, is a collection of management information accessible by an SNMP entity. An item of management information may exist in more than one context. An SNMP entity potentially has access to many contexts. If management information has been defined under a certain context by an SNMPv3 entity, any management application can access that information by providing that context name. The context name is an octet string, which has at least one management information.
- **Authentication**: Select any of the authentication protocols, either MD5 or SHA, and enter the password. MD5 and SHA are processes used for generating authentication/privacy keys in SNMP v3 applications.
- **Encryption**: Select any of the encryption protocols, either DES or AES-128, and enter the password. Note: Only after configuring Authentication is it possible to configure Encryption.
- **SNMP Port**: Enter the SNMP port number.
- **SNMP Timeout**: Enter the SNMP timeout in seconds.
- **SNMP Retries**: Enter the SNMP retries.

**WMI**: If you select WMI as the protocol, configure the Domain Name, User Name, and Password. Example: *TestDomain\TestUser*. Also enter the credential name and description.

**Telnet/SSH**: Enter the credential name. Select protocol Telnet or SSH.

- For Telnet, ensure you configure the correct login prompt, command prompt, and password prompt, in addition to the user name, password, port number, and timeout (in seconds) to access the device.
- For SSH, if you select SSH Key Authentication, ensure you configure the user name and choose the SSH Key using the Browse button, and configure the correct command prompt along with the port number and timeout (in seconds) to access the device.

**VMware**: Enter the credential name. Provide the HTTPS Username and Password of the host. Enter the HTTPS web service port number and timeout interval for the connection between the host and OpManager server. The credentials used must have access to all the hosts/VMs under the vCenter/Host being discovered.

**Citrix**: Enter the credential name. Provide the Username and Password of the host. Enter the web service port number and timeout interval for the connection between the host and OpManager server.

**UCS**: Enter the credential name. Provide the UCS Manager Username and Password. Enter the Port, Protocol, and Timeout interval for the connection between the UCS and OpManager server.

**Nutanix**: Provide the username and password of the Prism API element, the protocol being used (HTTP/HTTPS), the timeout value for the connection, and the port in which the Prism element is running.

## Backup Credentials (Telnet, SSH, SNMP v1, SNMP v2c, SNMPv3)

This module helps in automating router/switch configuration backup/restore, compliance checks, and network configuration changes periodically. The backup credentials are used for discovering devices into the Network Configuration Manager module. This module uses these credentials for taking router/switch configuration backups and to perform compliance checks and configuration change management periodically.

## Storage Credentials (SNMP v1/v2, v3, CLI, SMI, NetAppAPI)

The storage credentials are used for discovering storage devices into the Storage module. This module enables storage monitoring of Disk, LUN, RAID, etc. Storage credentials help you monitor storage devices such as Storage Arrays, Fabric Switches, Tape Libraries, Tape Drives, Host Servers, and Host Bus Adapter cards from all leading vendors in the industry.