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But how do they achieve that? Do you use a lot of VPNs?
by vaylian 1y ago
But how do they achieve that? Do you use a lot of VPNs?
- maverwa 1y agomy first guess would be: server honors X-Forwarded-For where it should not? Edit: looks like thats it: https://github.com/jart/cosmopolitan/blob/master/net/turfwar/turfwar.c#L1031 https://github.com/jart/cosmopolitan/blob/master/net/turfwar... So basically someone is running a script iterates over the whole ipv4 range and calls the claim endpoint with each single adress in the X-Forwared-For http header once.
- 3r7j6qzi9jvnve 1y agoThat only works if the proxy is sitting on localhost or a local network, just setting the header shouldn't work. (I came here because I was curious how jart got 127 and 10, but after seeing the source is their's that's less of wonder..)
- sgjohnson 1y agobool IsPrivateIp(uint32_t x) { return (x >> 24) == 10 /* 10.0.0.0/8 */ || (x & 0xfff00000) == 0xac100000 /* 172.16.0.0/12 */ || (x & 0xffff0000) == 0xc0a80000 /* 192.168.0.0/16 */; } the code doesn't consider 127.0.0.0/8 as "private". I'm curious about 10.0.0.0/8 though.*
- elitepleb 1y agoa simple proof of the opposite is that no one's yet to exploit any of the untaken ranges that way
- viraptor 1y agoThe line just under that prevents public IPs from using that function.
- maverwa 1y agoyou are right, I totally read that wrong. Confirmation bias strikes again!
- maldonad0 1y agoMaybe spoofing source IPs.
- sgjohnson 1y agocan't spoof the source IP in TCP communication, as the handshake cannot happen. With UDP you can send whatever, but obviously you won't be able to receive the response.
- Sesse__ 1y agoIt used to be possible back in the days when sequence numbers were easily guessable. (You'd obviously not be able to receive, only send, so you couldn't do TLS, but TLS had hardly been invented at the time.) Now operating systems are way too good for that. :-)
- viraptor 1y agoThere are VPNs which use residential endpoints. You essentially use other users' IPs there.
- cedws 1y agoBotnet maybe.
- sgjohnson 1y ago_nobody_ would waste a botnet of 9 million unique IPs like this.
- usui 1y agoWell let's not get hasty... These are valuable internet points we're talking about here.
- nilsherzig 1y agoNot if it's your own, but this would be a great opportunity to redirect a botnet hitting your severs to generate some internet points instead
- nicman23 1y agoit would be pretty funi though
- nilsherzig 1y agoEmbedding images on a popular page? But according to the servers status at http://35.223.193.241:443/statusz http://35.223.193.241:443/statusz nearly all claim requests expected to get html back not images.
- gruez 1y agoThere's plenty of ways around that, for instance <script src="https://ipv4.games/claim?name=gruez"> or <iframe src="https://ipv4.games/claim?name=gruez">
- bombcar 1y agoThey’re top of the list, so at least some is seeing that and choosing to add to it.
- adzm 1y agoI wouldn't be surprised if they had it call out from guns.lol or something
- justusthane 1y agoI don't know, but check out the "Recent Successful Claims" on the right. Edit: Apparently they run https://novo.tf/ https://novo.tf/, a CAPTCHA service, so they're probably using that to call out to ipv4.games from their clients.