:1701
(UDP)
Low 风险
L2TP
Embed This Widget
Add the script tag and a data attribute to embed this widget.
Embed via iframe for maximum compatibility.
<iframe src="https://ipfyi.com/iframe/entity//" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://ipfyi.com/entity//Add a dynamic SVG badge to your README or docs.
[](https://ipfyi.com/entity//)Use the native HTML custom element.
UDP — Security & VPN
端口概览
端口号
1701
服务名称
L2TP
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 1701?
Port 1701 is the standard port for Layer 2 Tunneling Protocol (L2TP), used to create VPN tunnels. L2TP itself provides no encryption and is typically combined with IPSec to form L2TP/IPSec VPN connections. It is built into Windows, macOS, iOS, and Android for VPN connectivity.
UDP
Security & VPN
常用
安全注意事项
端口1701（L2TP）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。