Started off by

  1. Enabling unattended updates
  2. Enable only ssh login with key
  3. Create user with sudo privileges
  4. Disable root login
  5. Enable ufw with necessary ports
  6. Disable ping
  7. Change ssh default port 21 to something else.

Got the ideas from networkchuck

Did this on the proxmox host as well as all VMs.

Any suggestions?

  • tango_suckah@alien.topBEnglish
    1·
    10 months ago

    That’s historically how east-west would be mediated within an enterprise environment for devices incapable of being secured with agents.

    Absolutely, and I’ve implemented similar east-west controls (as either prevent-first or for detection). You’ll get no argument from me on that. I’m just noting an interesting trend as IoT devices become more ubiquitous in commercial and industrial environments, and some of those devices must (for whatever reason) have access to some part of the network or internet.