Is port 556 (Remotefs) dangerous?

Port 556 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 556 be open on my firewall?

Port 556 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

Port 556 (Remotefs) uses the TCP transport protocol and falls under the File Transfer category.

:556 (TCP)

Medium 风险

TCP — File Transfer

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端口号 556

服务名称 Remotefs

传输协议 TCP

类别 File Transfer

安全风险 Medium

端口范围知名端口 (0-1023)

Port 556 is assigned to Remotefs (rfs), an early Sun Microsystems alternative to NFS. Entirely replaced by NFS.

TCP File Transfer

端口556（Remotefs）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。