Is port 74 (NETRJS-4) dangerous?

Port 74 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 74 be open on my firewall?

Port 74 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 74 use?

Port 74 (NETRJS-4) uses the TCP/UDP transport protocol and falls under the System & Infrastructure category.

:74 (TCP/UDP)

NETRJS-4

Low Risiko

TCP/UDP — System & Infrastructure

Ikhtisar Port

Nomor Port 74

Nama Layanan NETRJS-4

Protokol Transport TCP/UDP

Kategori System & Infrastructure

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 74?

NETRJS-4 is the fourth and final port in the ARPANET Network Remote Job Entry suite. All four NETRJS ports (71-74) were defined in RFC 740 for ARPANET-era mainframe access. This port is completely unused in any modern system.

TCP/UDP System & Infrastructure

Pertimbangan Keamanan

Port 74 (NETRJS-4) 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