AWS CLI Conditional Access Policies give you the control to stop that from happening. CLI is fast, scriptable, and universal. But speed without guardrails is dangerous. Conditional access policies for the AWS CLI act as those guardrails, enforcing tight rules before any command runs. You can lock access to certain IP ranges, times of day, MFA status, or specific identities—without slowing down legitimate work.
To set this up, you don’t start by guessing. You start with AWS Identity and Access Management (IAM). Build permission policies that check conditions using Condition blocks in JSON. These conditions use operators like StringEquals, Bool, and IpAddress to define when a CLI action should be allowed.
Example:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "*",
"Resource": "*",
"Condition": {
"IpAddress": {
"aws:SourceIp": "203.0.113.0/24"
},
"Bool": {
"aws:MultiFactorAuthPresent": "true"
}
}
}
]
}
This policy only allows CLI commands from a specific subnet and requires MFA. No key from a compromised laptop outside that range can punch through. Integrating aws:RequestTag or aws:PrincipalTag makes it possible to gate actions based on dynamic user attributes.