Is port 73 (NETRJS-3) dangerous?

Port 73 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 73 be open on my firewall?

Port 73 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 73 use?

Port 73 (NETRJS-3) uses the TCP/UDP transport protocol and falls under the System & Infrastructure category.

:73 (TCP/UDP)

NETRJS-3

Low Risiko

TCP/UDP — System & Infrastructure

Ikhtisar Port

Nomor Port 73

Nama Layanan NETRJS-3

Protokol Transport TCP/UDP

Kategori System & Infrastructure

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 73?

NETRJS-3 is the third variant port for the ARPANET Network Remote Job Service. Defined alongside ports 71, 72, and 74 in RFC 740, these ports represent the earliest form of remote computing over a network.

TCP/UDP System & Infrastructure

Pertimbangan Keamanan

Port 73 (NETRJS-3) 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