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solved (sort of): How are people discovering random subdomains on my server? (lem.lemmy.blahaj.zone)

submitted 5 months ago* (last edited 5 months ago) by BonkTheAnnoyed@lemmy.blahaj.zone to c/selfhosted@lemmy.world

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following up on my previous post:

it turns out that, like anything else weird in infrastructure, it was DNS

I registered mydomain.com as my primary router’s domain, re-ran the experiment with a fresh 128 char subdomain, and I received zero scans on the new domain.

Now my question is, who’s making that one query that leaks my domain name? Is it Apache on startup?

One solution is to resolve all my subdomains on /etc/hosts so it never has to leave the box, but I’m curious what a more experienced net admin would suggest.

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[–] Decronym@lemmy.decronym.xyz 1 points 5 months ago* (last edited 5 months ago)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters	More Letters
DNS	Domain Name Service/System
IP	Internet Protocol
SSL	Secure Sockets Layer, for transparent encryption

3 acronyms in this thread; the most compressed thread commented on today has 12 acronyms.

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