Is port 113 (Ident) dangerous?

Port 113 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 113 be open on my firewall?

Port 113 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

Port 113 (Ident) uses the TCP transport protocol and falls under the System & Infrastructure category.

:113 (TCP)

Medium 风险

TCP — System & Infrastructure

端口号 113

服务名称 Ident

传输协议 TCP

类别 System & Infrastructure

安全风险 Medium

端口范围知名端口 (0-1023)

Identification Protocol (Auth). Identifies the user of a TCP connection. Historically used by IRC servers and mail servers to verify client identity.

TCP System & Infrastructure

端口113（Ident）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。