:1646
(UDP)
RADIUS Accounting (old)
Low 风险UDP — Security & VPN
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端口概览
端口号
1646
服务名称
RADIUS Accounting (old)
传输协议
UDP
类别
Security & VPN
安全风险
Low
端口范围
已注册 (1024-49151)
什么是端口 1646?
Port 1646 is the legacy RADIUS accounting port, used before IANA standardized port 1813 for RADIUS accounting. It records network access session information such as duration, bytes transferred, and user identity. Many older RADIUS servers and network devices still support this port.
UDP
Security & VPN
安全注意事项
端口1646（RADIUS Accounting (old)）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。