this post was submitted on 29 Jan 2024
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Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ
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That will always happen with something exposed to internet. Attackers scan every IP and domain they can looking for vulnerabilities to exploit. There's software you can put in place to block requests that look like exploit attempts. Cloudfare WAF is one example. But those are mitigations only and not perfectly effective. Beyond that there's not much you can do. Always make sure anything you expose to the internet is configured securely and kept up to date. If it makes you uncomfortable, reconsider exposing it like that.
bots will start hitting a brand new subdomain on my web server literally seconds after creating it. looking for exploitable scripts like wordpress, usually.
You can avoid these scans by only using wildcards on your DNS entries and SSL certificates.
Both of these are commonly used by bots to find new domains.
Wildcard SSL subjects make sense as the certificate is public. But how does wildcard DNS help? They aren't public other than the requests coming from the client which don't use wildcard anyway.
I would not depend on DNS records being private. On the off chance that one of the nameservers messes up, I would prefer if no subdomains are leaked.
But you're correct, most of the time those leaks happen somewhere else.
Thanks, that helped!
Fail2ban works if they don't have infinite IP addresses