How to Update your AWS Security Groups to Permit Inter-Office Traffic
Security in today's environment is extermely critical. The MOST important step in moving to the cloud is securing your data. This is how you update your AWS instance to accept internet traffic from your properties only.
If your office is set up for dynamic IP addressing you will have to re-visit the steps on this page around once a month. A simple way to determine if your security group IP address will need to be updated is you see messages like the 'no mysql hosts' message below, office wide and no mapped drives will be able to connect.
1: Log in to AWS and go to the EC2 homepage
2:On the left menu scroll down to security groups
Once at the security group page select the group you want to change, then select the inbound tab.
Once the tab opens click the edit button
The edit window opens here you can now change or add different IP addresses.
When you update your IP address the new numbers must be preceded by /32
This is fancy computer code to tell the host to pay attention to that single address only.
To prevent a growing list of old IP addresses you should have a list of IP addresses in your property in a spread sheet. Then hilight the old numbers and paste in the new
ERROR: The source needs to be a CIDR block or a Security Group ID