<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: Add a Group

Group Name

Enter a meaningful name to identify the group. The name will be shown by default in the devices tree and in all alarms.

Tags

Enter one or more tags; confirm each tag by hitting the space, comma, or enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case sensitive. Tags are automatically inherited.

Domain or Computer Name

Define the authority for Windows access. This is used for Windows Management Instrumentation (WMI) and other Windows sensors. If you want to use a Windows local user account on the target device, please enter the computer name here. If you want to use a Windows domain user account (recommended), please enter the (Active Directory) domain name here. If not explicitly defined, PRTG will automatically add a prefix in order to use the NT LAN Manager (NTLM) protocol. Please do not leave this field empty.

User

Enter the username for Windows access. Usually, you will use credentials with administrator privileges.

Password

Enter the password for Windows access. Usually, you will use credentials with administrator privileges.

User

Enter a login name for the access via SSH and WBEM. Usually, you will use credentials with administrator privileges.

Login

Define the authentication method to use for login. Choose between:

• Login via Password: Provide a password for login. Enter below.

• Login via Private Key: Provide a private key for authentication.
  Note: PRTG can only handle keys in OpenSSH format which are not encrypted. You cannot use password protected keys here. In the text field, paste the entire private key, including the "BEGIN" and "END" lines. Please make sure the according public key is provided on the target machine. For details, please see Monitoring via SSH.

Password

This field is only visible if you select password login above. Enter a password for the Linux access via SSH and WBEM. Usually, you will use credentials with administrator privileges.

Private Key

This field is only visible if you select private key login above. Paste a private key into the field (OpenSSH format, unencrypted). Usually, you will use credentials with administrator privileges.

Note: If you do not insert a private key for the first time, but change the private key, you need to restart your PRTG core server service in order for the private key change to take effect! For details, please see Monitoring via SSH.

For WBEM Use Protocol

Define the protocol to use for WBEM. This setting is only relevant if you use WBEM sensors. Choose between:

• HTTP: Use an unencrypted connection for WBEM.
• HTTPS: Use an SSL-encrypted connection for WBEM.

For WBEM Use Port

Define the port to use for WBEM. This setting is only relevant if you use WBEM sensors. Choose between:

• Set automatically (port 5988 or 5989): Use one of the standard ports, depending on whether you choose unencrypted or encrypted connection above.
• Set manually: Use a custom port. Define below.

WBEM Port

This setting is only visible if you enable manual port selection above. Enter the WBEM port number.

SSH Port

Enter the port number to use for SSH connections.

Note: By default, PRTG uses this setting automatically for all SSH sensors, unless you define a different port number in the sensor settings.

SSH Rights Elevation

Define the rights with which you want to execute the command on the target system. Choose between:

• Run the command as the user connecting (default): Use the rights of the user who establishes the SSH connection.
• Run the command as another user using 'sudo': Use the rights of another user, for example, the administrator.
• Run the command as another user using 'su': Use the rights of another target user.

Target User

This field is only visible if you choose sudo or su above. Enter a username to run the specified command as another user than root. If you leave this field empty, you will run the command as root. Ensure that you set the Linux password even if you use a public/private key for authentication. This is not necessary if the user is allowed to execute the command without a password.

Password Target User

This field is only visible if you choose su above. Enter the password for the specified target user.

User

Enter a login name for access to VMware and XEN servers. Usually, you will use credentials with administrator privileges.

Password

Enter a password for access to VMware and XEN servers. Usually, you will use credentials with administrator privileges.

Note: Single Sign-On (SSO) passwords for vSphere do not support special characters. Please see the manual sections for VMware sensors for details.

VMware Protocol

Define the protocol used for the connection to VMware and XenServer. Choose between:

• HTTPS (recommended): Use an SSL-encrypted connection to VMware and XenServers.
• HTTP: Use an unencrypted connection to VMware and XenServers.

Session Pool

Define if you want to use session pooling for VMware sensors. Choose between:

• Reuse session for for multiple scans (recommended): Select this option to use session pooling. With session pooling, a VMware sensor uses the same session as created in advance to query data and needs not to log in and out for each sensor scan. We recommend that you choose this option because it reduces network load and log entries on the target device, resulting in better performance.
• Create a new session for each scan: If you select this option and disable session pooling, a VMware sensor has to log in and out for each sensor scan. We recommend that you use the session pooling option above for better performance.

SNMP Version

Select the SNMP version for the device connection. Choose between:

• v1: Use the simple standard v1 protocol for SNMP connections. This protocol only offers clear-text data transmission, but it is usually supported by all devices.
• v2c: Use the more advanced v2c protocol for SNMP connections. Data is still transferred as clear-text, but it supports 64-bit counters.
• v3: Use the latest v3 protocol for SNMP connections. It provides secure authentication and data encryption.

Note for SNMP v3: Due to internal limitations you can only monitor a limited number of sensors per second using SNMP v3. The limit is somewhere between 1 and 50 sensors per second (depending on the SNMP latency of your network). This means that using an interval of 60 seconds you are limited to between 60 and 3000 SNMP v3 sensors for each probe. If you experience an increased "Interval Delay" or "Open Requests" with the Probe Health Sensor, you need to distribute the load over multiple probes. SNMP v1 and v2 do not have this limitation.

Community String

This setting is only visible if you select SNMP version v1 or v2c above. Enter the community string of your devices. This is a kind of "clear-text password" for simple authentication. We recommend that you use the default value.

Authentication Type

This setting is only visible if you select SNMP version v3 above. Choose between:

• MD5: Use Message-Digest Algorithm 5 (MD5) for authentication.
• SHA: Use Secure Hash Algorithm (SHA) for authentication.

The type you choose must match the authentication type of your device.

Note: If you do not want to use authentication, but you need SNMP v3, for example, because your device requires context, you can leave the field password empty. In this case, SNMP_SEC_LEVEL_NOAUTH is used and authentication deactivated entirely.

User

This setting is only visible if you select SNMP version v3 above. Enter a username for secure authentication. This value must match the username of your device.

Password

This setting is only visible if you select SNMP version v3 above. Enter a password for secure authentication. This value must match the password of your device.

Encryption Type

This setting is only visible if you select SNMP version v3 above. Select an encryption type. Choose between:

• DES: Use Data Encryption Standard (DES) as encryption algorithm.
• AES: Use Advanced Encryption Standard (AES) as encryption algorithm. Note: AES 192 and AES 256 are not supported by Net-SNMP because they lack RFC specification.

The type you choose must match the encryption type of your device.

Data Encryption Key

This setting is only visible if you select SNMP version v3 above. Enter an encryption key here. If you provide a key in this field, SNMP data packets are encrypted using the encryption algorithm selected above, which provides increased security. The key that you enter here must match the encryption key of your device.

Note: If the key you enter in this field does not match the key configured on the target SNMP device, you will not get an error message about this! Please enter a string or leave the field empty.

Context Name

This setting is only visible if you select SNMP version v3 above. Enter a context name only if it is required by the configuration of the device. Context is a collection of management information accessible by an SNMP device. Please enter a string.

SNMP Port

Enter the port for the SNMP communication. We recommend that you use the default value.

SNMP Timeout (Sec.)

Enter a timeout in seconds for the request. If the reply takes longer than the value you enter here, the request is aborted and an error message triggered.

User Group Access

Define which user group(s) will have access to the object that you edit. A table with user groups and right is shown; it contains all user groups from your setup. For each user group you can choose from the following access rights:

• Inherited: Use the settings of the parent object.
• None: Users in this group cannot see or edit the object. The object does not show up in lists.
• Read: Users in this group can see the object and review its settings.
• Write: Users in this group can see the object, as well as review and edit its settings. However, they cannot edit access rights settings.
• Full: Users in this group can see the object, as well as review and edit its settings and edit access rights settings.

You can create new user groups in the System Administration—User Groups settings.