Unverified50% confidenceCautionExact time
NPM's management backend uses port 81 by default and should not be exposed to the public internet.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/7/2026
First Seen
Valid until: 11/5/2026
Sources
端口转发下Authentik安全性解析：自托管服务防护指南
Related Claims
UnverifiedNPM's management interface should not be exposed to the public internet; otherwise, attackers may directly modify routing rules to bypass authentication.72% similarUnverifiedNAT-PMP及其继任者PCP（Port Control Protocol，RFC 6887）试图以轻量化协议替代UPnP并引入基本访问控制机制，但至今尚未普及71% similarUnverified从外网访问自建服务时切勿直接对外开放端口，应使用反向代理配合HTTPS证书或通过VPN私有隧道访问66% similar
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