Is port 4000 (ICQ / Diablo II) dangerous?

Port 4000 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 4000 be open on my firewall?

Port 4000 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 4000 use?

Port 4000 (ICQ / Diablo II) uses the TCP/UDP transport protocol and falls under the Messaging category.

:4000 (TCP/UDP)

ICQ / Diablo II

Medium Riesgo

TCP/UDP — Messaging

On this page

Resumen del puerto

Número de puerto 4000

Nombre del servicio ICQ / Diablo II

Protocolo de transporte TCP/UDP

Categoría Messaging

Riesgo de seguridad Medium

Rango de puertos Registrados (1024-49151)

Qué es el puerto 4000?

Port 4000 is associated with ICQ instant messaging (legacy) and Blizzard's Diablo II game server. Various custom applications also use this port as a default. It is in the registered port range and frequently appears in network scans due to its use by multiple different services.

TCP/UDP Messaging

Consideraciones de seguridad

El puerto 4000 (ICQ / Diablo II) está clasificado como riesgo medio. Aunque este servicio se expone comúnmente, considera usar alternativas cifradas cuando estén disponibles.

Recomendación: Mantén el servicio actualizado. Monitorea los registros en busca de actividad inusual.

ICQ / Diablo II

Resumen del puerto

Qué es el puerto 4000?

Consideraciones de seguridad

Puertos relacionados — Messaging

Términos relacionados