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 Risco

TCP/UDP — System & Infrastructure

Visão geral da porta

Número de porta 74

Nome do serviço NETRJS-4

Protocolo de transporte TCP/UDP

Categoria System & Infrastructure

Risco de segurança Low

Intervalo de portas Conhecidas (0-1023)

O que é a porta 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

Considerações de segurança

A porta 74 (NETRJS-4) 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