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SNMP

SNMP is a communication protocol for managing TCP/IP networks, including both individual network devices and aggregated devices. The protocol is defined by RFC 1157. SNMP runs on top of UDP.

The JUNOS stateful firewall service implements the SNMP ALG to inspect the SNMP type. SNMP does not enforce stateful flow. Each SNMP type needs to be specifically enabled. Full SNMP support of stateful firewall services requires that you configure the SNMP ALG on UDP port 161. This enables the SNMP get and get-next commands, as well as their response traffic in the reverse direction: UDP port 161 enables the SNMP get-response command. If SNMP traps are permitted, you can configure them on UDP port 162, enabling the SNMP trap command.

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