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One thing I never knew about ping is that if you ping a broadcast address, then all hosts will respond! But for some operating systems (windows I think?), you n
by aluminussoma 10y ago
One thing I never knew about ping is that if you ping a broadcast address, then all hosts will respond! But for some operating systems (windows I think?), you need a packet capture to see this. It's been useful when probing around unknown networks.
I only found that out by reading the source code. It was part of a short-lived attempt to become a better hacker by familiarizing myself with the Linux source code, kernel and all. The more I learn, the more impossible it seems to ever master it all...
- EvanAnderson 10y agoYou'll be interested in reading about Smurf attacks: https://en.wikipedia.org/wiki/Smurf_attack https://en.wikipedia.org/wiki/Smurf_attack
- 13of40 10y agoAt one of my first corporate jobs about 20 years ago, I noticed that "nslookup x.y.z.255" actually resolved to a host. I tried to ping it, but got nothing...until I got a phone call from security about why a malicious broadcast ping came from my desktop machine.