Maintain a whitelist of IP address blocks to access AWS over SSH
A small tool to make it pretty simple to add and remove ip addresses (or CIDR blocks) from an AWS security group. This acts like a sort of oversimplified VPN, where you can quickly give yourself SSH access to a project as you move about from netwowrk to network.
Anyone who knows enough to use a tool like this likely knows that there are better options available, from hardware VPNs to software VPNs hosted on an EC2 instance, and so forth. If you are using this tool and you haven’t even considered using something better, this is your chance: look at the better options, and see if they fit your needs.
Of course, most of those other options require you to get additional hardware or software resources involved and might come with costs. I understand, that’s why I made a little tool to make do.
This is a python tool, packaged as a python module, so you should be able to just run
$ pip install awswl
Of course, if you don’t know what a python module is, or you don’t have python and pip installed, you may have additional work ahead of you.
If you want usage help at the command line, try:
$ awswl --help
You can list the IP address blocks that are authorized:
$ awswl --list
Authorize your current IP Address:
$ awswl --add-current
Remove authorization for your current IP:
$ awswl --remove-current
For each of these commands, you need to tell awswl which security group to use, which you can do with the --sgid command-line option or using an environment variable.
All of these require you to have AWS credentials set up in advance, stored in ~/.aws/credentials, and if you need to use a profle, you can configure it with AWS_PROFILE. If you want to identify the security group using a command-line variable so that you don’t have to put it into each command invocation, you can put it in AWSWL_SGID.
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