:4500
(UDP)
Low 风险
IPsec NAT Traversal
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UDP — Security & VPN
端口概览
端口号
4500
服务名称
IPsec NAT Traversal
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 4500?
Port 4500 is used for IPsec NAT traversal (NAT-T), which encapsulates IKE and ESP packets inside UDP to traverse NAT devices. VPN clients and servers use this port when standard IPsec on port 500 cannot traverse NAT. It is essential for IKEv2/IPsec VPN connections through NAT firewalls.
UDP
Security & VPN
常用
安全注意事项
端口4500（IPsec NAT Traversal）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。