Is port 71 (NETRJS-1) dangerous?

Port 71 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 71 be open on my firewall?

Port 71 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 71 use?

Port 71 (NETRJS-1) uses the TCP/UDP transport protocol and falls under the System & Infrastructure category.

:71 (TCP/UDP)

NETRJS-1

Low Risiko

TCP/UDP — System & Infrastructure

Ikhtisar Port

Nomor Port 71

Nama Layanan NETRJS-1

Protokol Transport TCP/UDP

Kategori System & Infrastructure

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 71?

NETRJS-1 through NETRJS-4 (ports 71-74) were assigned for the Remote Job Entry service used on the original ARPANET to submit batch jobs to remote mainframe computers. Defined in RFC 740, NETRJS allowed time-sharing users to submit card-image job streams to a remote server.

TCP/UDP System & Infrastructure

Pertimbangan Keamanan

Port 71 (NETRJS-1) 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