Is port 561 (monitor) dangerous?

Port 561 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Should port 561 be open on my firewall?

Port 561 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 561 use?

Port 561 (monitor) uses the UDP transport protocol and falls under the System & Infrastructure category.

:561 (UDP)

monitor

Low Risiko

UDP — System & Infrastructure

Ikhtisar Port

Nomor Port 561

Nama Layanan monitor

Protokol Transport UDP

Kategori System & Infrastructure

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 561?

Port 561 is assigned to monitor, for Unix system monitoring data distribution. Completely obsolete.

UDP System & Infrastructure

Pertimbangan Keamanan

Port 561 (monitor) diklasifikasikan sebagai risiko rendah. Layanan ini menggunakan enkripsi atau memiliki permukaan serangan yang minimal, sehingga relatif aman untuk diekspos.

Rekomendasi: Terapkan praktik keamanan standar. Jaga perangkat lunak tetap diperbarui dan pantau akses.

Port Terkait — System & Infrastructure

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

Istilah Terkait

Bandwidth Latency Packet Loss Ping Throughput ASN