Is port 500 (IKE/ISAKMP) dangerous?

Port 500 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 500 be open on my firewall?

Port 500 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 500 use?

Port 500 (IKE/ISAKMP) uses the UDP transport protocol and falls under the Security & VPN category.

:500 (UDP)

IKE/ISAKMP

Medium 风险

UDP — Security & VPN

端口概览

端口号 500

服务名称 IKE/ISAKMP

传输协议 UDP

类别 Security & VPN

安全风险 Medium

端口范围知名端口 (0-1023)

什么是端口 500?

Port 500 is assigned to IKE (Internet Key Exchange) and ISAKMP, the key negotiation protocols used to establish IPsec VPN tunnels. Primary port for VPN gateway negotiation.

UDP Security & VPN 常用

安全注意事项

端口500（IKE/ISAKMP）被归类为中等风险。虽然此服务通常会暴露，但请在可用时考虑使用加密替代方案。

建议：保持服务更新。监控日志以发现异常活动。

IKE/ISAKMP

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端口概览

什么是端口 500?

安全注意事项

相关端口 — Security & VPN

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