Is port 518 (NTalk) dangerous?

Port 518 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 518 be open on my firewall?

Port 518 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 518 use?

Port 518 (NTalk) uses the UDP transport protocol and falls under the Messaging category.

:518 (UDP)

NTalk

Low 风险

UDP — Messaging

端口概览

端口号 518

服务名称 NTalk

传输协议 UDP

类别 Messaging

安全风险 Low

端口范围知名端口 (0-1023)

什么是端口 518?

Port 518 is assigned to NTalk (New Talk), an updated version of the Unix Talk protocol with improved cross-platform compatibility. Obsolete.

UDP Messaging

安全注意事项

端口518（NTalk）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。

NTalk

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端口概览

什么是端口 518?

安全注意事项

相关端口 — Messaging

相关术语