aws-access's Introduction

AWS Access

aws-access is a command line utility to update an AWS security group with your current IP across one or more regions.

This is a relatively cheap way to lock down access to AWS resources to whitelisted ips. Defaults to whitelisting port 22. Configure ports using the --ports|-P argument.

To use:

Step 1: Create security group for whitelisted ips e.g. 'remote-working'
Step 2: Assign security group to appropriate resources
Step 3: Install aws-access npm install -g aws-access
Step 4: Set up aws credentials
Step 5: Run aws-access to whitelist your current ip e.g. aws-access -g remote-working

Example

# enable access to SSH and Postgres from the current IP
aws-access -p myprofile -g mysecuritygroup -r us-east-1 eu-west-1 -P 22 5432

Installing

npm install -g aws-access

Prerequisites

nodejs 7.6+

Command Line

aws-access

Options:
  -h             Show help                                             [boolean]
  -p, --profile                                                       [optional]
  -g, --group                                                         [required]
  -r, --region                                            [default: "us-east-1"]
  -P, --ports                                          [array] [default: ["22"]]

Security Considerations

It's likely that a users IP will be stale over time, potentially allowing access to the AWS resources from unexpected IPs. This is still better than allowing access from the whole internet (i.e. 0.0.0.0/0) but this should be part of a defense in depth i.e. resources that are made accessible via aws-access should also be properly secured.
Removing old users from the security group managed by aws-access should be part of any offboarding process
If a user is renamed, their old username should be cleaned from the security group managed by aws-access
If this is used for multiple users, any of the users have the ability to modify rules set up by other users

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