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Tommy 2023-08-16 08:12:40 -07:00 committed by GitHub
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content/posts/macos/Properly Generate a Randomize MAC Address on macOS.md
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@ -20,7 +20,7 @@ Randomizing the mac address only makes sense if you use a not-very-unique hostna
### Improper instructions
Unfortunately, most of the guides I could find recommends randomizing the entire MAC address instead of the final 3 octets. Take guides recommending `macchanger` for example, they fail to mention that the program does [this](https://github.com/acrogenesis/macchanger/blob/main/bin/macchanger#L37):
Unfortunately, most of the guides I could find recommends randomizing the entire MAC address instead of the final 3 octets. Take the guides recommending `macchanger` for example, they fail to mention that the program does [this](https://github.com/acrogenesis/macchanger/blob/main/bin/macchanger#L37):
```rust
[format('%0.2x', rand(256) & ~1), (1..5).map { format('%0.2x', rand(256)) }].join(':')
@ -33,3 +33,12 @@ Or this snippet from PrivacyGuides:
These will give you completely randomized MAC addresses, which is not what we want.
### Doing it the Proper Way
First, you need to get the name of your network interface and its MAC address. You can check this with
```bash
ifconfig
```
In most cases, your interface will be `en0`, the Wifi network interface on modern Macbooks.