# 6. ElasticCache for Solution Architect

![](/files/-MBrCwRbIpzwmc07wrC0)

![](/files/-MBrDOJgsPaodmfJKLC9)

List of Ports to be familiar with

Here's a list of **standard** ports you should see at least once. You shouldn't remember them (the exam will not test you on that), but **you should be able to differentiate between an Important (HTTPS - port 443) and a database port (PostgreSQL - port 5432)** 

**Important ports:**

* FTP: 21
* SSH: 22
* SFTP: 22 (same as SSH)
* HTTP: 80
* HTTPS: 443

**vs RDS Databases ports:**

* PostgreSQL: 5432
* MySQL: 3306
* Oracle RDS: 1521
* MSSQL Server: 1433
* MariaDB: 3306 (same as MySQL)
* Aurora: 5432 (if PostgreSQL compatible) or 3306 (if MySQL compatible)

> Don't stress out on remember those, just read that list once today and once before going into the exam and you should be all set :)
>
> Remember, you should just be able to differentiate an "Important Port" vs an "RDS database Port".


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