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I use Zip Bombs to Protect my Server (idiallo.com)

submitted 5 days ago by some_guy@lemmy.sdf.org to c/technology@lemmy.world

104 comments fedilink hide all child comments

The one-liner:

dd if=/dev/zero bs=1G count=10 | gzip -c > 10GB.gz

This is brilliant.

(page 2) 50 comments

sorted by: hot top controversial new old

[–] melroy@kbin.melroy.org 11 points 5 days ago (1 children)

let me try..

[–] melroy@kbin.melroy.org 12 points 5 days ago (1 children)

Looks fine to me. Only 1 CPU core I think was 100%.

10+0 records in
10+0 records out
10737418240 bytes (11 GB, 10 GiB) copied, 28,0695 s, 383 MB/s

[–] melroy@kbin.melroy.org 10 points 5 days ago (1 children)

ow.. now the idea is to unzip it right?

nice idea:

if (ipIsBlackListed() || isMalicious()) {
    header("Content-Encoding: deflate, gzip");
    header("Content-Length: "+ filesize(ZIP_BOMB_FILE_10G)); // 10 MB
    readfile(ZIP_BOMB_FILE_10G);
    exit;
}

[–] mbirth@lemmy.ml 7 points 5 days ago

Might need some

if (ob_get_level()) ob_end_clean();

before the readfile. 😉

[–] billwashere@lemmy.world 4 points 5 days ago

I want to know he they built that visualization

[–] UnbrokenTaco@lemm.ee 6 points 5 days ago (1 children)

Interesting. I wonder how long it takes until most bots adapt to this type of "reverse DoS".

[–] sugar_in_your_tea@sh.itjust.works 6 points 5 days ago

Then we'll just be more clever as well. It's an arms race after all.

[–] Kolanaki@pawb.social 4 points 5 days ago* (last edited 5 days ago)

How I read that code:

"If the dev folder's bullshit is equal to 1 gram..."

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