Arpchat – Text your friends on the same network using just ARP

Re:Arpchat – Text your friends on the same network using jus... by inopinatus on Wednesday August 09, 2023 @07:36PM (#37069861)

One of the first amplification DDoS attacks I ever saw - talking early 1990s era - was to ping the broadcast addresses of unwitting campus networks with the victim’s host address spoofed as the source.

This shouldn’t work today, but back then, a naive TCP/IP implementation (which is to say, many of them) would happily participate.

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Re:Arpchat – Text your friends on the same network using jus... by lokar on Wednesday August 09, 2023 @08:23PM (#37070230)

https://en.m.wikipedia.org/wiki/Smurf_attack

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Re:Arpchat – Text your friends on the same network using jus... by inopinatus on Wednesday August 09, 2023 @08:51PM (#37070445)

Ah that’s right. It’s been so long I’d forgotten the name. Although I have a feeling it was already a recognised potential vulnerability some years before being packaged as a convenient utility.

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