:111
(TCP/UDP)
RPCBind / Portmapper
Critical 风险TCP/UDP — System & Infrastructure
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端口概览
端口号
111
服务名称
RPCBind / Portmapper
传输协议
TCP/UDP
类别
System & Infrastructure
安全风险
Critical
端口范围
知名端口 (0-1023)
什么是端口 111?
RPCBind (also called portmapper) maps ONC RPC program numbers to the dynamic ports on which those services are listening. Exposing port 111 on the internet is a well-known critical vulnerability.
TCP/UDP
System & Infrastructure
常用
安全注意事项
端口111（RPCBind / Portmapper）被归类为严重风险。此端口不应暴露在公网上。该服务在未加密的情况下传输数据，容易受到窃听、凭据窃取和中间人攻击。
建议：在防火墙处封锁此端口。改用加密替代方案（SSH、SFTP、HTTPS）。