Hello, I'm currently deploying WPA2-Enterprise wireless networks with Unifi 5 controllers. On each location, guests are given a login and password letting them connect to the network. Everything is fine except that for Windows users, connecting for the first often requires me to assist users as Windows default options are not compliant with the one I configured (no certficate, for instance). For long staying guests (> 1 month), these are rated as acceptable but we also have a small group of short staying guests (.

How I hacked 4 Unifi accounts in under 5 minutes. Especially true for businesses like restaurants that offer free WiFi over their Unifi Connection via the Dlink router. January 8, 2014. I have no IT background. But i tried it on my unifi and its really do crack password in 3hrs for 8 digits WPA2. WEP just in couple minutes. How to Hack your Unifi Dlink router just in case you've changed the default password and lost it. It really could not be any easier to set up one of these devices either. All the mounting hardware and screws are provided in each device which makes mounting the it a breeze.

I find that a bit hard to believe, unless the 25-character password was readily dictionaried, or just happened to be 'early in the alphabet' of an exhaustive search (ie: the first 8 were all 'a') Looking around, it seems like the best-of-breed GPU accelerated hashcat's are doing about 500k hashes per second against WPA/WPA2. ie: a GeForce GTX titan XP was clocked at 520000 hash/s A 12 character password, with only 4 bits of entropy per character is 48-bits of entropy, that's 10656 password combinations. A good random password across all ascii printables would be closer to 6.5 bits per byte, but we'll go with 4 for now. At 520k hashes per second, a full exhaustive search is 6265 days, and on-average will break in half that or 3132 days. That's still over 8 *years* to brute force on average, assuming I haven't messed up my math. Now, if the password broken was hashed with something like plain single-round MD5 instead of WPA, I could see maybe breaking a 28 character password in 21 days. Single round MD5 you're looking at more like 18 billion hashes/second because the algorithm is a LOT faster to compute.

That's breaking at 34615 times faster than WPA. The above password would break in less than 1/10th of a day with the weaker hashing. (edited for spelling.). Raw numbers for such brute-force attacks are meaningless for WPA2. Such attacks are valid when the encrypted hash is known as the brute-force would be against that hash.

With WPA2 the 'brute force' would be against the AP by actually trying to authenticate - several orders of magnitude slower than an using an optimized hardware-based cracking solution. Legacy WEP attacks are not relevant for WPA2 as the authentication and encryption are entirely different.

Also note that the WPA2 key is actually not used for any data encryption - it is used for authentication purposes. The primary difference between WPA2-PSK and WPA2-Enterprise is that with the former every client has the same credentials (the PSK), while with the latter each client has its own credentials from the certicate. For short-term guests, perhaps you could look at leveraging a guest-portal via UniFi? Greggmh123, Yeah, I hear claims of such things too, but it's always just claims. I've never seen any actual credible vulnerability disclosures on it.

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