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 Risk

TCP — System & Infrastructure

Port Genel Bakış

Port Numarası 5666

Servis Adı NRPE (Nagios Remote Plugin Executor)

Taşıma Protokolü TCP

Kategori System & Infrastructure

Güvenlik Riski Medium

Port Aralığı Kayıtlı (1024-49151)

Port Nedir 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 Yaygın Kullanılan

Güvenlik Değerlendirmeleri

5666 numaralı port (NRPE (Nagios Remote Plugin Executor)) orta risk olarak sınıflandırılmıştır. Bu hizmet yaygın olarak açık tutulsa da mevcut olduğunda şifreli alternatifleri kullanmayı düşünün.

Öneri: Hizmeti güncel tutun. Olağandışı etkinlikler için günlükleri izleyin.

İlgili Portlar — System & Infrastructure

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

İlgili Terimler

Bandwidth Latency Packet Loss Ping Throughput ASN