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 Riesgo

TCP/UDP — System & Infrastructure

Resumen del puerto

Número de puerto 71

Nombre del servicio NETRJS-1

Protocolo de transporte TCP/UDP

Categoría System & Infrastructure

Riesgo de seguridad Low

Rango de puertos Conocidos (0-1023)

Qué es el puerto 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

Consideraciones de seguridad

El puerto 71 (NETRJS-1) está clasificado como bajo riesgo. Este servicio usa cifrado o tiene una superficie de ataque mínima, siendo relativamente seguro de exponer.

Recomendación: Aplica prácticas de seguridad estándar. Mantén el software actualizado y monitorea el acceso.

Puertos relacionados — System & Infrastructure

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

Términos relacionados

Bandwidth Latency Packet Loss Ping Throughput ASN