Introduction to the 15 ports commonly used in ECS instances

This article brings you an introduction to the 15 ports commonly used in ECS instances. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Introduction to common ports for ECS instances

The following is a list of common ports for ECS instances:

##Unable to access certain ports

Phenomenon: The ECS instance listens to the corresponding port, but this port is inaccessible in some areas, while access to other ports is normal.

Analysis: Some operators judge that ports 135, 139, 444, 445, 5800, 5900, etc. are high-risk ports and are blocked by default.

Solution: It is recommended that you modify the sensitive port to carry services to other non-high-risk ports.

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