September 2024
Intermediate to advanced
194 pages
5h 46m
Spanish
Content preview from Aprender DevSecOps
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Apéndice A. Puertos y protocolos
Algunos puertos y protocolos comunes se describen en la Tabla A-1. Consulta Internet Assigned Numbers Authority (IANA) para obtener la referencia definitiva . Cabe señalar que IANA asignará con frecuencia los puertos TCP y UDP al mismo protocolo aunque éste sólo utilice uno u otro. El DNS es una excepción habitual porque utiliza tanto UDP como TCP en sus operaciones habituales. A menos que se indique lo contrario, aquí he incluido el protocolo más común (TCP o UDP).
| Protocolo | Puerto(s) | Descripción |
|---|---|---|
| SMTP | TCP/25, TCP/465, TCP/587 | Protocolo Simple de Transferencia de Correo utilizado para transferir correo entre Agentes de Transferencia de Correo (MTA), como los servidores de correo. Los puertos 465 y 587 son puertos protegidos por SSL (SMTPS). |
| DNS | UDP/53 y TCP/53 | El protocolo del Sistema de Nombres de Dominio es responsable de la resolución de nombre de host a IP y de IP a nombre de host, además de proporcionar información sobre un dominio, como sus registros de intercambio de correo (MX) para el correo electrónico y otra información. TCP se utiliza normalmente para las transferencias de zona entre servidores DNS primarios y secundarios autorizados. El archivo /etc/hosts anula la resolución DNS en una máquina determinada. |
| HTTP/HTTPS | TCP/80 y TCP/443 | El Protocolo de Transferencia de Hipertexto sin SSL utiliza el puerto 80, mientras que la versión SSL/TLS utiliza el puerto 443. |
| DHCP | UDP/67 ... |
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