Is port 2404 (IEC 60870-5-104) dangerous?

Port 2404 is classified as critical risk and should not be exposed to the public internet. It transmits data without encryption, making it vulnerable to eavesdropping and credential theft.

Should port 2404 be open on my firewall?

No, port 2404 should not be open to the public internet. Block it at the firewall and use encrypted alternatives such as SSH, SFTP, or HTTPS instead.

What transport protocol does port 2404 use?

Port 2404 (IEC 60870-5-104) uses the TCP transport protocol and falls under the System & Infrastructure category.

:2404 (TCP)

IEC 60870-5-104

Critical 风险

TCP — System & Infrastructure

端口概览

端口号 2404

服务名称 IEC 60870-5-104

传输协议 TCP

类别 System & Infrastructure

安全风险 Critical

端口范围已注册 (1024-49151)

什么是端口 2404?

Port 2404 is used by IEC 60870-5-104, a standard protocol for telecontrol equipment in electrical power systems and SCADA infrastructure. Utility companies use this protocol to monitor and control remote electrical substations and power equipment. Security of this port is critical for protecting power grid infrastructure from cyberattacks.

TCP System & Infrastructure

安全注意事项

端口2404（IEC 60870-5-104）被归类为严重风险。此端口不应暴露在公网上。该服务在未加密的情况下传输数据，容易受到窃听、凭据窃取和中间人攻击。

建议：在防火墙处封锁此端口。改用加密替代方案（SSH、SFTP、HTTPS）。

IEC 60870-5-104

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端口概览

什么是端口 2404?

安全注意事项

相关端口 — System & Infrastructure

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