Is port 546 (DHCPv6 Client) dangerous?

Port 546 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 546 be open on my firewall?

Port 546 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

Port 546 (DHCPv6 Client) uses the UDP transport protocol and falls under the System & Infrastructure category.

:546 (UDP)

Medium 风险

UDP — System & Infrastructure

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端口号 546

服务名称 DHCPv6 Client

传输协议 UDP

类别 System & Infrastructure

安全风险 Medium

端口范围知名端口 (0-1023)

Port 546 is assigned to DHCPv6 client, used by IPv6 hosts to receive dynamic address configuration from DHCPv6 servers (RFC 3315). Critical for IPv6.

UDP System & Infrastructure 常用

端口546（DHCPv6 Client）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。