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 Risco

TCP/UDP — System & Infrastructure

Visão geral da porta

Número de porta 71

Nome do serviço NETRJS-1

Protocolo de transporte TCP/UDP

Categoria System & Infrastructure

Risco de segurança Low

Intervalo de portas Conhecidas (0-1023)

O que é a porta 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

Considerações de segurança

A porta 71 (NETRJS-1) é classificada como baixo risco. Este serviço usa criptografia ou tem uma superfície de ataque mínima, tornando-o relativamente seguro para expor.

Recomendação: Aplique práticas de segurança padrão. Mantenha o software atualizado e monitore o acesso.

Portas relacionadas — System & Infrastructure

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

Termos relacionados

Bandwidth Latency Packet Loss Ping Throughput ASN