Is port 123 (NTP) dangerous?

Port 123 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 123 be open on my firewall?

Port 123 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 123 use?

Port 123 (NTP) uses the UDP transport protocol and falls under the System & Infrastructure category.

:123 (UDP)

NTP

Low Risiko

UDP — System & Infrastructure

Ikhtisar Port

Nomor Port 123

Nama Layanan NTP

Protokol Transport UDP

Kategori System & Infrastructure

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 123?

Network Time Protocol. Synchronizes clocks across networked computers with millisecond accuracy. Essential for logging, security certificates, and distributed systems.

UDP System & Infrastructure Umum Digunakan

Pertimbangan Keamanan

Port 123 (NTP) 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.

Protokol Terkait

Pelajari lebih lanjut tentang protokol NTP →

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

NTP

Embed This Widget