🤯 Этот чип за $5 блокирует 537 000 сайтов!
The last stronghold of security · 132 words · 1 min read · EN
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This $5 device can block half a million advertising sites. Egyptian developer ZxIS has built a DNS ad blocker using a standard ESP32 C3 microcontroller with 400 KB of RAM. But the craziest thing is, he managed to fit 537,000 domains into just 4 MB of flash memory. The secret is that instead of storing
website addresses, it stores their forty-bit hashes and then searches for a match using binary search. As a result, the device uses about 50 KB and responds in about 10 milliseconds. Of course, this is not a replacement for PHL or EDG Home. There are no detailed statistics or advanced features, but as a backup
DNS filter that is powered directly from the router's USB port and consumes almost no electricity, the idea is simply brilliant. y
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