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Why don't I show up in shodan? (lemmy.ca)

submitted 20 hours ago by bigdickdonkey@lemmy.ca to c/selfhosted@lemmy.world

5 comments fedilink hide all child comments

I noticed nothing I have setup shows up in shodan by ip or domain. I'm not complaining, I'd rather not have it show up but I'm curious why. Could it be because of hosting behind a reverse proxy?

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[–] Cyberkillen@infosec.pub 9 points 20 hours ago

Shodan has web crawlers to grab hosts, not everything has been crawled so there is a chance it will appear eventually.

[–] EmbarrassedDrum@lemmy.dbzer0.com 6 points 19 hours ago

if you'll have more connections or mentions on other IPs or websites, that'll grow the chances of them scanning your IP too.

You should read about how their crawler decide what to crawl and when*. After all, there's 4 Billion IPv4 addresses, and much more IPv6 (tho I don't know how much of them are used), and they don't just randomly spin up numbers to scan.

I once read an article explaining how they did this, can't find it now. I'll send it if I do find it.

[–] moonpiedumplings@programming.dev 5 points 19 hours ago (1 children)

https://www.zoomeye.hk

Similar site as shodan, but different company. I'd recommend checking there as well.

[–] bigdickdonkey@lemmy.ca 2 points 18 hours ago (1 children)

Interesting my ip shows up with a plex logo and a port that I've never opened. I have never used any plex services

[–] moonpiedumplings@programming.dev 2 points 17 hours ago

It could be an old service on that same ip. Zoomeye/shodan don't rescan on the spot, they keep records of old scans.