Is port 989 (FTPS Data) dangerous?

Port 989 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Should port 989 be open on my firewall?

Port 989 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 989 use?

Port 989 (FTPS Data) uses the TCP transport protocol and falls under the File Transfer category.

:989 (TCP)

FTPS Data

Low 风险

TCP — File Transfer

端口概览

端口号 989

服务名称 FTPS Data

传输协议 TCP

类别 File Transfer

安全风险 Low

端口范围知名端口 (0-1023)

什么是端口 989?

FTP data channel over TLS/SSL (implicit). The encrypted version of the FTP data channel (port 20) for secure file transfers.

TCP File Transfer 常用

安全注意事项

端口989（FTPS Data）被归类为低风险。该服务使用加密或攻击面极小，相对安全可以暴露。

建议：应用标准安全实践。保持软件更新并监控访问。

FTPS Data

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端口概览

什么是端口 989?

安全注意事项

相关端口 — File Transfer

相关术语