In this menu you can configure Simple Network Management Protocol settings.

The Simple Network Management Protocol is used for network monitoring and management. It allows you to collect and organize information about devices on IP networks, and can even allow you to modify that information to change device behavior.

SNMP has a simple client-server architecture. In SNMP:

• Servers (called “Managers”) collect and process information about
  network devices. Typically, the manager software runs on a PC or server.
• Clients are called “Agents”. Agents run on any device that supports them
  that are connected to a IP network. This includes computers, network equipment, and many other device types, such as phones, IoT devices, and more.
• FreshTomato acts as a sort of connector between the Manager and
  the Agents.

SNMP lets one or more Managers collect management data from various clients via a regular polling process. It exposes the data in the form of variables in a database, called the Management Information Base (MIB). The MIB describes the system status and configuration of each device. MIB variables can then be remotely queried (and even manipulated) by Manager applications.

Enable SNMP: Checking this enables the SNMP service, and allows a Manager program to start polling for data.

Port: Here, enter the port on which the manager polls data from monitored agent devices. (Default: 161).

Remote Access: Enabling this inserts a firewall rule that exposes a UDP port (of above port number) to the WAN interface. Note that this makes SNMP a non-secure protocol. Any device that can “speak” SNMP could theoretically (query the SNMP devices or access Manager data?). Thus, for security, you are strongly urged to enter a setting in the Allowed Remote IP Address field described below and to add an RO Community string.

Allowed Remote IP Address: In this field, enter the IP address of the PC or other device allowed Remote Access.

Location: In this optional field, enter the physical location of the Server. (Default: hostname from Identification menu).

Contact: In this optional field, enter contact information for a person to be alerted. FreshTomato does not have an built-in email server.

RO Community: The Read-Only Community string is used to authenticate the devices allowed to query SNMP data from an agent. You are strongly advised to change the default setting for better security. (Default: Public“).

Currently, FreshTomato does not support a RW (Read-Write) community or traps in SNMP.