Is port 847 (DHCP Failover 2) dangerous?

Port 847 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 847 be open on my firewall?

Port 847 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

Port 847 (DHCP Failover 2) uses the TCP transport protocol and falls under the System & Infrastructure category.

:847 (TCP)

Medium 风险

TCP — System & Infrastructure

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端口号 847

服务名称 DHCP Failover 2

传输协议 TCP

类别 System & Infrastructure

安全风险 Medium

端口范围知名端口 (0-1023)

DHCP Failover Protocol secondary port, used alongside port 647 in some DHCP failover implementations for lease state synchronization.

TCP System & Infrastructure

端口847（DHCP Failover 2）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。