4 ms·

Thanks for making it so clear what services your machine provides on the public internets. I like advertising on the public internets too and sometimes I even r

• xenophonf 12y ago
  I'm an infosec guy, and I think sometimes we can make things so difficult for attackers that it becomes too difficult for our sysadmins to do their jobs. Using obscure, pseudorandom server names is a good example of this. If I get an alert that says, "uxeprdweb05 is down", I know to immediately check the Mason, OH, production hypervisor cluster/web server rack. If the alert says, "I-2A51DDBCE621 is down", I have to look up that host in my CMDB before starting any troubleshooting. Sure, "uxeprdweb05" leaks information to attackers, but it's nothing they couldn't find out with a port scan. In the meantime, I and my colleagues don't have to go through a lot of unnecessary indirection to do our jobs. As to the security benefits of configuration management tools, again, speaking as an infosec guy, I love them. I can push a locked-down, default-deny base config out to all of the computers under my care, and I don't have to worry about making a mistake or missing a step or forgetting to document something. I can work with the devops team to set up automated functional and security testing using a continuous integration tool, so that config changes (including security updates!) get vetted automatically in a development or test environment before being pushed to production. I can put the whole config under revision control, so if there is a service or security incident due to a config change, we can figure out how our development and testing processes failed us - and how we can improve them. And finally, speaking as a ardent FreeBSD user, I wholly agree that Ubuntu is utter rubbish. ;)
  • mkfifo 12y ago
    I am not talking about insane cryptic obfuscation, i am simply stating that advertising services by publicly naming your server what it runs is flat out n3wb stupid.
    • xenophonf 12y ago
      And my point is that public-facing services already advertise all kinds of information about themselves. Obscure codenames won't make attacks harder to run, while they will significantly increase the level of effort on the part of your sysadmins. Infosec is all about cost-benefit analysis and risk reduction, right? Well, in my view the administrative overhead costs of a naming convention like "Star Trek characters" outweigh the supposed security benefits. I will grant you that it may come down to differences in our threat models. In my case attacks are impersonal - it's the malware or botnet /du jour/ that I have to deal with on a regular basis, versus the kind of APT facing journalists, civil rights organizations, or militaries. Even then I'm not sure that naming conventions that leak less information than a basic port scan will slow APT down. Too, the administrative overhead caused by forcing sysadmins to constantly go to a CMDB just to do basic troubleshooting might be a cost targetted organizations would be willing to pay. In my case, we run really, really lean, so we do what we can to make our I.T. services self-documenting (naming and numbering conventions that have meaning across multiple network layers).
  • joeyspn 12y ago
    tl;dr: Security through obscurity never is the best choice =) [0] https://en.wikipedia.org/wiki/Security_through_obscurity https://en.wikipedia.org/wiki/Security_through_obscurity
• Spooky23 12y ago
  There are different extremes. I've dealt with plenty of security admins whose religous adherence to the cults of compliance and network segmentation make it impossible to get anything done.