Prerequisites for installing the On-Premise Poller
To monitor your internal network and resources behind a firewall, you need to install the On-Premise Poller within your network. You can install the On-Premise Poller on physical or virtual machines.
System requirements:
The machine on which the On-Premise Poller will be installed should meet the below requirements:
| RAM | 16GB (A minimum of 12GB of memory is required apart from the memory consumed by the OS and other processes) |
Processor/ Virtual Processor | 8 processors/ 16 Virtual Processors |
| Processor Speed | 2.5GHz or above |
| Disk Space | 100GB or higher |
| OS | Windows or Linux Note: Webpage Speed (Browser) monitoring is available only on Linux. To set it up, please refer to configuring the On-Premise Poller for synthetic (browser) monitors. The On-Premise Poller is currently incompatible with ARM-based machines. |
OS Type | 64-bit |
Table 1: System requirements for installing the On-Premise Poller.
The On-Premise Poller needs to be started with root or Administrator privileges after installation, depending on whether the machine OS is Linux or Windows.
If the On-Premise Poller is installed in a secure network, make sure you allow access to these domains and ports in your firewall to facilitate communication with the Site24x7 central server.
The requirements for an On-Premise Poller might differ slightly according to the specific type of monitoring you require.
Additional requirements for network monitoring
Number of On-Premise Pollers required to monitor your network
We recommend using dedicated On-Premise Pollers to monitor your networks.
The number of On-Premise Pollers required to monitor your networks might vary based on the number of resources to be monitored. Use this calculator to find out the number of On-Premise Pollers that you will require.
We recommend using dedicated On-Premise Pollers to monitor your networks.
The number of On-Premise Pollers required to monitor your networks might vary based on the number of resources to be monitored. Use this calculator to find out the number of On-Premise Pollers that you will require.
- Network monitoring capacity: One On-Premise Poller (with the specifications defined above) can support monitoring for up to 1,500 network devices, 10,000 interfaces, and 10,000 performance counters with a 15-minute polling interval.
- Network traffic monitoring capacity: Flow rate: Supports 20K to 40K flows per second.
Ports to be allowlisted:
The following ports need to be included in the allowlist for both the network's firewall (if applicable) and the firewall of the machine hosting the On-Premise Poller:
Port | Protocol | Description | Inbound/ Outbound/Bidirectional | Used for |
161 | UDP | SNMP commands and messages | Bidirectional | SNMP-based monitoring |
162 | UDP | SNMP Trap Receiver port | Inbound | SNMP-based monitoring |
9996 | UDP | NetFlow Listener Port | Inbound | NetFlow Analyzer |
22 | SSH | SSHD port The default SSH service is used for remote login to the device on which the On-Premise Poller is installed. | Bidirectional | Network Configuration Manager (NCM) |
23 | Telnet | Telnet port The default Telnet service is used for remote login to the device on which the On-Premise Poller is installed. | Bidirectional | NCM |
69 | TFTP | TFTP port | Bidirectional | NCM |
135 | TCP | WMI | Outbound | WMI monitoring |
1025 to 5000 | TCP | WMI | Bidirectional | Windows 2000, Windows XP, and Windows Server 2003 |
49152 to 65535 | TCP | WMI | Bidirectional | Windows Server 2008 and later versions, Windows Vista and later versions |
Table 2: Additional ports to be allowlisted.
In addition, ports 8060 (Data collection) and 13306 (PostgreSQL Database Port) will also be used for network monitoring. If ports 8060, 9996, and 13306 are unavailable, subsequent ports that are free will be identified and used, like 8061, 9997, and 13307, respectively.
For Windows installations, ensure that the necessary folder permissions are granted for the Network Module to function correctly.
Additional requirements for Web Transaction (Browser) and Webpage Speed (Browser) monitoring
We recommend using dedicated On-Premise Pollers to monitor your Web Transaction (Browser) and Webpage Speed (Browser).You can monitor up to 40 Web Transaction (Browser) monitors at a five-minute poll interval using one On-Premise Poller with the system requirements mentioned above.
Read on to learn more about additional prerequisites for installing the On-Premise Poller for Web Transaction (Browser) and Webpage Speed (Browser).
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