I generated 16 character (upper/lower) subdomain and set up a virtual host for it in Apache, and within an hour was seeing vulnerability scans.

How are folks digging this up? What’s the strategy to avoid this?

I am serving it all with a single wildcard SSL cert, if that’s relevant.

Thanks

Edit:

  • I am using a single wildcard cert, with no subdomains attached/embedded/however those work
  • I don’t have any subdomains registered with DNS.
  • I attempted dig axfr example.com @ns1.example.com returned zone transfer DENIED

Edit 2: I’m left wondering, is there an apache endpoint that returns all configured virtual hosts?

Edit 3: I’m going to go through this hardening guide and try against with a new random subdomain https://www.tecmint.com/apache-security-tips/

  • frongt@lemmy.zipEnglish
    6·
    2 days ago

    Scans from where? Is it exposed to the internet? What does the scan traffic look like?

    • BonkTheAnnoyed@lemmy.blahaj.zoneOPEnglish
      13·
      2 days ago

      Mostly from AWS or the like, with occasional Chinese and Russian origins.

      The scans look like requests to various WordPress endpoints, JavaScript files associated with known vulnerabilities etc