Is port 6667 (IRC (Internet Relay Chat)) dangerous?

Port 6667 is classified as high risk. It is a common target for automated scanning and brute-force attacks. Restrict access to trusted IPs if exposure is necessary.

Should port 6667 be open on my firewall?

Port 6667 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 6667 use?

Port 6667 (IRC (Internet Relay Chat)) uses the TCP transport protocol and falls under the Messaging category.

:6667 (TCP)

IRC (Internet Relay Chat)

High 风险

TCP — Messaging

端口概览

端口号 6667

服务名称 IRC (Internet Relay Chat)

传输协议 TCP

类别 Messaging

安全风险 High

端口范围已注册 (1024-49151)

什么是端口 6667?

Port 6667 is the standard port for IRC (Internet Relay Chat), one of the oldest internet communication protocols still in use. IRC servers listen on this port for client connections to join channels and exchange messages. IRC is commonly associated with malware command-and-control (C2) communication and botnets in security contexts.

TCP Messaging 常用

安全注意事项

端口6667（IRC (Internet Relay Chat)）被归类为高风险。此端口是自动扫描和暴力破解攻击的常见目标。如必须暴露，请将访问限制为已知IP地址。

建议：使用防火墙规则将可信IP列入白名单。启用速率限制和入侵检测。

IRC (Internet Relay Chat)

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端口概览

什么是端口 6667?

安全注意事项

相关端口 — Messaging

相关术语