:74
(TCP/UDP)
NETRJS-4
Low 风险TCP/UDP — System & Infrastructure
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端口概览
端口号
74
服务名称
NETRJS-4
传输协议
TCP/UDP
类别
System & Infrastructure
安全风险
Low
端口范围
知名端口 (0-1023)
什么是端口 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
安全注意事项
端口74（NETRJS-4）被归类为低风险。该服务使用加密或攻击面极小，相对安全可以暴露。
建议：应用标准安全实践。保持软件更新并监控访问。