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Defending Your Wifi Network

In the previous post I talked about setting up a wifi hacking environment. That will be useful even for this phase, defending your own network for the tech savvy users part. This explanation is broken into two steps: for laymen and tech savvy users and for tech savvy users only.

For Laymen and Tech Savvy Users

[1] strong password is an uncommon word/phrase that won't be found in any dictionary, is made of a mix of lower case / upper case / numbers and special characters. Yes, that annoying special chars. You may even use the "space" character. It's extremely important to choose a strong password because break WPA2 basically boils down to password brute forcing, and guess what? It's costly and time consuming for attackers. The easier a password is to be found in a wordlist (a file containing many common words, or previous leaked passwords in site breaches), the easier it is cracked. Digits only reduces the number of possible characters in a password, leading to a fast brute force of the entire keyspace, that is, test all digits combinations. It can be done in a few hours. And, unfortunately, as the minimum password length in WPA/WPA2 is 8 chars, it has the same length as a date (mmddaaaa), so people tend to use a date in their passwords, which is not good.

For Tech Savvy Users Only

Bonus

Even if your network is secure, you need to protect yourself from the devices within your network. If there is an infected PC, watch out, it may try to infect the other devices. Here is a real example. So, upgrade your own system from time to time, make sure your firewalls are up and that's all I got for today.

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