Apache JServ Protocol (AJP)
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TCP — Web
端口概览
什么是端口 8009?
Port 8009 is the default port for Apache JServ Protocol (AJP), used to proxy requests from an Apache HTTP server to Apache Tomcat or other Java application servers. The Ghostcat vulnerability (CVE-2020-1938) allowed unauthenticated file reads and RCE through AJP, resulting in widespread exploitation of exposed port 8009. This port should be disabled or restricted if not actively used for reverse proxying.
安全注意事项
端口8009（Apache JServ Protocol (AJP)）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）。