When you say "no one needs vpn ssh access" vs "AWS ssh access", what is the difference between the two ?
Multiple factors:
1FA: Password(1F) OR private key (password blank)(1F)
2FA: Private key(1F) with password(2F)
MFA: Private key(1F), w/ password(2F) AND OTP(3F)
Ssh has 2fa options if that's the real reason.
Fwiw, this guide also suggests setting up a wg connection which is no better than ssh, and probably worse in some ways.
https://docs.aws.amazon.com/systems-manager/latest/userguide...
Google Cloud has a similar gcloud compute ssh instance-name command, and I imagine there's a similar one on azure.
One could have a box with no public IP and no open ports and still use this to connect.
Via ssh? With an SSH key? Over port 22?
No, through their in-house proxy tools such as Session Manager or Identity Aware Proxy or whatever Azure has.
> With an SSH key?
Not at the edge, and not an SSH key you manage. A dynamically generated one managed by the cloud provider which exists just for that session. So, not really, not like you're thinking.
> Over port 22?
For the tunnel? No.
What you want to do is avoid fault, improve tolerance, but extend liability to the provider.
This is where your argument breaks down IMHO. Unless you are saying "don't expose port 22 to the world...", which is a common (small) part of security-in-depth.
> You also shift fault to AWS rather than your company and team. You did your diligence, you just have to access control and nothing more. IF AWS has a security breach that access to your systems completely on AWS and you can demand compensation.
This appears to be an instance of the "appeal to authority"[0] fallacy and is of little solace should server(s) one is responsible for become compromised.
This isn't fallacy it is reducing a businesses cognitive load.
My point exactly.
> You established what is supposed be a secure system yet that system failed due to provider security.
This makes no sense. By your own recommendation, "provider security" is an AWS offering.
> AWS is far more staffed than any other company why wouldn't you shift left to AWS? Why would you hire a fleet of security engineers to do what AWS already established?
What does Amazon's staffing have to do with best practices when securing a server deployed on their platform? Who said anything about "a fleet of security engineers"? How does any of that relate to securing that which one constructs, and ultimately is responsible for, when using said hosting services?
> You are breaking convention, reinventing the wheel and complicating an already simple system.
Are you saying that your original statement of "You also shift fault to AWS rather than your company and team" is somehow an accepted convention?
And what wheel did I "reinvent"?
Finally, was my identification of the common practice which is moving sshd off of port 22 the complication to which you refer?
https://aws.amazon.com/blogs/compute/new-using-amazon-ec2-in...
I really don't recommend extending responsibility for creature comforts. However you want to do this so be it.
> This makes no sense. By your own recommendation, "provider security" is an AWS offering.
Are you stating your system is infaliable? So why would you want to bear the infaliable claim and not shift it to the company providing it?
> What does Amazon's staffing have to do with best practices when securing a server deployed on their platform? Who said anything about "a fleet of security engineers"? How does any of that relate to securing that which one constructs, and ultimately is responsible for, when using said hosting services?
Tooling takes a team to support it. You think every company can afford a team to manage that tooling? And why should they? Not all businesses are tech companies but still need a digital footprint. They need to be selfconcious and choose provider practices to get the most out of them.
> Are you saying that your original statement of "You also shift fault to AWS rather than your company and team" is somehow an accepted convention? Providers own the responsibility of their technology. In terms of failure if access is correctly configured and managed, yet their technology fails they owe your businesses it is very simple.
> And what wheel did I "reinvent"?
Implementing old security practices. Why wouldn't you move to be better pratices and prevent larger holes in your network? Often companies get into this repetitious cycle of reimplementation or reinvention of existing tools and technology just to manage access especially ssh. The convention of using a cloud platform is to use a cloud platform's security access not some sketched up VPN and SSH system.
No, I am trying to remind you of the topic which was under discussion. To wit:
The Reluctant Sysadmin's Guide to Securing a Linux Server
A straw man fallacy (sometimes written as strawman) is the
informal fallacy of refuting an argument different from
the one actually under discussion, while not recognizing or
acknowledging the distinction.[0]
See above quote.
> You think ...
You do not know what I think nor my experiences, so please do not be so arrogant as to assume so.
>> And what wheel did I "reinvent"?
> Implementing old security practices.
Again, please refer to the *article under discussion*. In the event it remains unclear, I will restate its title:
The Reluctant Sysadmin's Guide to Securing a Linux Server
See previous strawman definition and link below.
> Often companies get into this repetitious cycle of reimplementation or reinvention of existing tools and technology just to manage access especially ssh. The convention of using a cloud platform is to use a cloud platform's security access not some sketched up VPN and SSH system.
Again, see previous strawman definition above and link below.
Note that the only ssh-related recommendation I proffered was:
Unless you are saying "don't expose port 22 to
the world...", which is a common (small) part of
security-in-depth.
As to "sketched up VPN and SSH system", I have no idea as to what you are referencing. Perhaps this is a recollection of a previous engagement wherein decisions made remind you of a bad situation similar to, but different than, this?
HTH
0 - https://en.wikipedia.org/wiki/Straw_man
EDIT: corrected spelling from "waas" to "was"
You would not believe how many companies are dependent on patching through users through VPNs in order to access remote hosts. I mean some have to because of no other solutions like managing their own on-prem. I kind of would be interested in AWS access management capable of being implemented within an on-prem.
If you rent compute space, then you trust them to responsibly use the hypervisor instead of snooping. If you trust that or not, you are all in and may as well cement over the external port 22.
Staffing count doesn't guarantee quality.