Classification:
compliance
Set up the ec2 integration.
Reduce the probability of a breach by checking EC2 security groups for inbound rules that allow unfettered access to TCP port 22 (used for secure remote login) and restrict access to IP addresses that require this port.
Malicious activity, such as man-in-the-middle (MITM) and brute-force attacks, can occur when permitting unfettered access to this port.
Follow the Security group rules docs to learn how to add a security group rule that will restrict access to a specific port.
Run revoke-security-group-ingress to remove inbound rules that allow unrestricted access to port 22.
revoke-security-group-ingress.sh
aws ec2 revoke-security-group-ingress
--group-name group-name
--protocol tcp
--port 22
--cidr 192.0.2.0/24
Run authorize-security-group-ingress to add new inbound rules that restrict port 22 access.
revoke-security-group-ingress.sh
aws ec2 authorize-security-group-ingress
--group-name your-group-name
--protocol tcp
--port 22
--cidr 192.0.2.0/24