Is port 5666 (NRPE (Nagios Remote Plugin Executor)) dangerous?

Port 5666 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 5666 be open on my firewall?

Port 5666 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 5666 use?

Port 5666 (NRPE (Nagios Remote Plugin Executor)) uses the TCP transport protocol and falls under the System & Infrastructure category.

:5666 (TCP)

NRPE (Nagios Remote Plugin Executor)

Medium Risco

TCP — System & Infrastructure

Visão geral da porta

Número de porta 5666

Nome do serviço NRPE (Nagios Remote Plugin Executor)

Protocolo de transporte TCP

Categoria System & Infrastructure

Risco de segurança Medium

Intervalo de portas Registradas (1024-49151)

O que é a porta 5666?

Port 5666 is used by NRPE (Nagios Remote Plugin Executor), an agent that allows Nagios and compatible monitoring systems to execute monitoring plugins on remote Linux/Unix hosts. Nagios checks server health metrics like CPU, memory, and disk usage through NRPE. Misconfigured NRPE allowing command arguments can be exploited for remote command execution.

TCP System & Infrastructure Comumente usadas

Considerações de segurança

A porta 5666 (NRPE (Nagios Remote Plugin Executor)) é classificada como risco médio. Embora este serviço seja comumente exposto, considere usar alternativas criptografadas quando disponíveis.

Recomendação: Mantenha o serviço atualizado. Monitore os logs em busca de atividades incomuns.

Portas relacionadas — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Termos relacionados

Bandwidth Latency Packet Loss Ping Throughput ASN