Is port 647 (DHCP Failover) dangerous?

Port 647 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 647 be open on my firewall?

Port 647 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 647 use?

Port 647 (DHCP Failover) uses the TCP transport protocol and falls under the System & Infrastructure category.

:647 (TCP)

DHCP Failover

Medium 风险

TCP — System & Infrastructure

端口概览

端口号 647

服务名称 DHCP Failover

传输协议 TCP

类别 System & Infrastructure

安全风险 Medium

端口范围知名端口 (0-1023)

什么是端口 647?

DHCP Failover Protocol, used between redundant DHCP servers to synchronize lease databases and coordinate address assignment. Essential for high-availability DHCP deployments.

TCP System & Infrastructure 常用

安全注意事项

端口647（DHCP Failover）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。

DHCP Failover

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端口概览

什么是端口 647?

安全注意事项

相关端口 — System & Infrastructure

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