Security protocol (IEEE 802.11i) developed by the Wi-Fi Alliance to protect wireless networks.

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31
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3answers
4k views

What is the best home wireless network encryption algorithm to use?

What is the best home wireless network encryption algorithm to use? I realize the best answer will probably change over time, and hopefully people can provide updated answers as new standards come ...
19
votes
2answers
11k views

Strength of WEP, WPA and WPA 2 PSK

I know there are three method for wifi security. What are the relative strengths of the password encryption in WEP, WPA and WPA2 PSK?
19
votes
4answers
6k views

Are WPA2 connections with a shared key secure?

This is something that has been bugging me for quite some time: when I have a wifi access point with WPA2 encryption and I give out the key, how secure are the connections? With WEP you could easily ...
19
votes
1answer
1k views

WPA significantly less secure than WPA2?

I understand at least theoretically WPA2 is more secure than WPA, but in practice does it make any difference which one you use? From what I know there are no known attacks for either except for ...
16
votes
3answers
7k views

Can someone get my WPA2 password with honeypots?

Yesterday I went to my cousin's home and I saw that I'm not connected to his wireless (for internet access). Then I have looked up the list of wireless points. I have found his name and clicked it ...
13
votes
5answers
15k views

Why is WPA Enterprise more secure than WPA2?

In personal mode WPA2 is more secure than WPA. However, I have read that WPA Enterprise provides stronger security than WPA2 and I am unsure exactly how this is achieved.
12
votes
3answers
6k views

How does FaceNiff work?

FaceNiff is an Android app that sniffs Facebook session ids. You must be connected to the same WiFi as the victim. It is said to be working even when WPA2 is present. How is it possible? I can decrypt ...
11
votes
2answers
2k views

What is the purpose of changing the default SSID?

Yesterday I got a cable modem, and on the back of the modem there is a small sticker with the name of the default SSID, which looks like Vendor-A11 and the default Pre-Shared Key, which is a long ...
10
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4answers
2k views

How can an access point spoof me into connecting?

I was reading through the answers of the question "How can I ensure that I connect to the right wireless Access Point?" and was wondering how it is possible for an access point to imitate another wifi ...
9
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2answers
10k views

Is it possible to use the aircrack-ng tool to crack a WPA2 Enterprise network?

is this tool (aircrack-ng) capable of cracking into a WPA/WPA2 Enterprise network? This tool has major success cracking the passwords of WEP/WPA networks. If it can, how, but if not, is there another ...
9
votes
1answer
1k views

Are networks using EAP-TLS affected by Heartbleed?

Does the Heartbleed bug affect WiFi networks secured by WPA2-EAP in TLS mode? Since it's using TLS to secure connections between the server and clients, is it possible to attack the server using the ...
7
votes
6answers
25k views

Recommend Length for Wi-FI PSK?

I currently have a network set up with WPA2 and AES encryption, the password is 8 characters long but was randomly generated and contains no dictionary words. However I'm concerned about the ...
7
votes
2answers
1k views

Would an unnecessarily long password degrade performance of a WPA2 wireless network?

My friend wants to keep his home network super-secure, due to some trouble that he's had with unwelcome Wi-Fi intruders. So, naturally, he devised an ultra-long WPA2 passphrase (on the order of 100+ ...
7
votes
2answers
11k views

In inSSIDer, what is the difference between WPA2-CCMP and RSNA-CCMP?

inSSIDer shows my wireless network as RSNA-CCMP. The settings on the wireless router (Linksys E2000) do not at all seem to suggest an "RSNA" security option. The security filtering options in ...
7
votes
1answer
1k views

In WPA2-Enterprise, where does AES come in?

WPA2-Enterprise uses 802.1X to facilitate authentication, but when and how is CCMP/AES used to encrypt the data after the authentication is completed? Let us say you want to use PEAP, and the TLS ...
7
votes
4answers
34k views

Bruteforce on 10 characters length WPA2 password

I'm trying to hack my own WPA2 network for learning purposes. I have the *.cap file generated by aircrack-ng tools after a WPA handshake. I've tested by including my own password and a bunch of ...
7
votes
1answer
3k views

Are strong WPA2 passwords “good enough” for WiFi security?

I'm currently using WPA2-PSK with CCMP on my home WiFi network for encryption and security. I was a big fan of MAC filtering, until I realized that MAC addresses are publicly sniffable in the 802.11 ...
7
votes
1answer
823 views

How to get hold of and use WPA session keys?

I'm testing sniffing and decrypting my WPA2 wifi network traffic. But when using airdecap to decrypt the capture file (created by airodump) using my WPA passphrase I only get broadcast traffic. If I ...
6
votes
3answers
4k views

How do WPA/WPA2 cracking programs know when the PMK/PTK is correct?

I'm doing some pen-testing on my home wlan with aircrack-ng and it got me wondering how programs like these(eg. aircrack-ng, cowPatty, pyrit etc) really work. Specially, when performing a ...
6
votes
2answers
1k views

Does WPA2 Enterprise mitigate evil twin attacks?

One of the dangers of using WPA2-PSK is the possibility that an attacker may setup another wireless network with the same SSID and even use the same access point MAC address via MAC spoofing. The ...
6
votes
2answers
4k views

WPA2 Enterprise AES encryption key size?

I have recently set up a RADIUS server with EAP for my wireless router, however, I have some questions about the key size and how WPA2 enterprise (AES) works in general. I have read that in ...
5
votes
3answers
25k views

Four-way Handshake in WPA-Personal (WPA-PSK)

Can someone explain to me in what consists the Four-way Handshake in WPA-Personal (WPA with Pre-Shared Key), which informations are being sent between AP and client, how is it possible to find the AP ...
5
votes
5answers
12k views

Is a longer WiFi password more secure?

Today I had to type the same password to connect to a WPA2-secured WiFi network several times, and got really annoyed with the length of the password. Especially since it is just a phrase repeated ...
5
votes
3answers
312 views

Security difference in wardriving open network versus monitoring traffic on a network to which I am authenticated

I have been listening to the CBT nuggets on comptia security+ and there were a few sections on wireless security. A question that occurred to me was: if I am authorized to use a wireless network, and ...
5
votes
1answer
3k views

What makes PINless Wi-Fi Direct using WPS on Android secure?

I've read from Wikipedia that Wi-Fi direct uses WPS (Wifi Protected Setup), and I know that in Android (at least what I have which is 4.0.1 on Galaxy S3) uses the WPS method of the "push button" to ...
4
votes
4answers
3k views

Does using WPA2-Enterprise just change the attack model vs WPA2-PSK?

As far as I can tell based on the reading I've done so far, WPA2-Enterprise uses the same encryption and security algorithms and methods as WPA2-PSK, with the addition of using another service for ...
4
votes
3answers
391 views

Why do coffee shops not use WPA/WPA2? Would it solve many problems if they did?

So I'm looking into public WiFi security in places such as hotels, coffee shops etc. It seems the current standard is just to use open wi fi connections in many of these locations. I would assume this ...
4
votes
3answers
2k views

Is it possible for someone to figure out my WIFI password by following me?

Say someone drives up and parks in front of my house. They get a list of all SSIDs they can pick up. My phone is configured to save the WPA2 password and automatically login when the SSID is in range. ...
4
votes
4answers
5k views

Wifi penetration testing: Why aireplay-ng de-authentication does not work?

I am trying to pentest the security of the password of my wireless network. It is a WPA2 with pre-shared-keys. My current computer is connected to the wifi router and I try to de-auth my own machine. ...
4
votes
1answer
7k views

Is brute-forcing the only way to crack WPA?

I don't know much about how WPA algorithms work internally. Is brute-forcing an AP the only way to crack WPA? (or to get associated with AP) Another question is about Reaver-WPS, what if an access ...
4
votes
2answers
201 views

Secure Wireless Implementations

For quite a while now, I have grown to treat wireless networks as inherently insecure. As part of this, I put them on the public Internet and require VPN connections to access company resources. My ...
4
votes
1answer
3k views

What are the difference between WPA2-PSK and WPA2-EAP-PSK?

What are the differences between WPA2-PSK and WPA2 EAP-PSK ? What are the pro/const of use one configuration or the other ?
4
votes
1answer
390 views

WPA2 audit tool

For the purposes of my own research, I have a very modest budget to set up a modest WPA2 brute-forcer supported by GPU(s). I've done some homework: Brute-Force GPU Password Crackers How to setup ...
3
votes
2answers
207 views

Is it possible to assign MAC-address-specific passphrases for a WiFi network?

Private network access security can be defined by a unique WPA2 passphrase to grant access to devices and MAC address filtering to control authorized devices. Nowadays mobile devices are legion, so if ...
3
votes
2answers
1k views

Encrypt WiFi connection per connected user

One of the questions that comes on quite often is about WiFi encryption. Now imagine that you have multiple users connecting to one AP. With a simple WPA2 protection setup they can still sniff each ...
3
votes
1answer
3k views

Practical attacks against WPA2

Maybe a duplicate: Bruteforce on 10 characters length WPA2 password So I am trying to get into home network security for the fun of it. More concretely, I am trying to reproduce the scenario of ...
3
votes
1answer
4k views

Which part of the eapol packets contain WPA password Hash?

I have captured wifi traffic from a WPA network using Wireshark. I filtered the results for "eapol" packets and noted in the info column there are message type 3 and type 1. I believe this is two ...
3
votes
2answers
107 views

Could SSL-like encryption be used for not password-protected wireless access points?

I'm looking at ways an outsider (i.e. someone without a possible password) of the network could sniff the communication within the network, specifically focusing on WLAN. This is what I understand ...
3
votes
1answer
3k views

How exactly does 4-way handshake cracking work?

From my understanding this is how WPA2 works for home networks: PSK(Pre-Shared Key) is used to generate PMK(Pairwise Master Key), which is used together with ANonce(AP Nonce) to create PTK(Pairwise ...
3
votes
1answer
1k views

Certificate validation with 802.1x PEAP

I recently learned about how WPA-PSK works. If I understand correctly, the 4-way handshake enables the protocol to ensure mutual possession of the PMK (and therefor, the PSK) without sending the ...
3
votes
1answer
233 views

WPA2 enterprise credentials involved in encryption?

Since encryption keys are session-based in WPA2 enterprise, if person A obtains person B's credentials, will person B's encryption key still be safe? Is there any way person A could use person B's ...
3
votes
1answer
895 views

WiFi Direct/WPS key question

So far, I haven't seen any PoC or real-world attacks against WiFi Direct, but I see the potential because it relies on WiFi Protected Setup (WPS) for establishing the connection. Tools like Reaver ...
3
votes
2answers
191 views

How are WPA Keys stored on a router?

Should the router only store a hash of my encryption key or is it stored as plaintext? I believe (but not certain) that the WPA key is itself an encryption key, buy shouldn't that be encrypted like ...
3
votes
2answers
21k views

How to setup GPU for Cracking WPA/WPA2?

I have a Dell N5110 15R Laptop that I'm planning to use for GPU based cracking of WPA/WPA2 passwords. The thing is, I'm not a really big fan of password dictionaries and rainbow tables, I'd rather ...
3
votes
1answer
322 views

What are the security implications of pairwise master key caching in Wireless Networks?

I'm currently investigating WPA2 enterprise security options, and I'm curious about PMK Caching. I've found lots of vendor information about it, and understand that the client does not need to ...
3
votes
0answers
664 views

What is the most common default security setting on most consumer and small business Wi-Fi routers? [closed]

I am writing a paper right now which involves Wi-Fi security (I'll spare you the details). A major argument in this area depends on the assertion that Wi-Fi routers come defaulted as open networks (ie ...
2
votes
1answer
4k views

Why is a CA certificate required for EAP-TLS clients?

When setting up clients with WPA2 EAP-TLS, most clients (ie: my phone, my computer) require both a client public/private keypair (for obvious reasons) and a certificate authority certificate. It's ...
2
votes
1answer
2k views

Should WPA2-AES be presumed insecure? (What is the “Hole196” vulnerability?)

I saw it mentioned in an answer here about firesheep, but I've never heard of it -- Should WPA2 be presumed insecure?
2
votes
3answers
1k views

wpa2-psk + wireless isolation = secure connection?

from what I've read: If I am on a wireless network without encryption, any other computer connected to that same network could easily (with right tools & knowledge) intercept any traffic I ...
2
votes
1answer
3k views

can an attacker find WPA2 passphrase given WPA key data and WPA MIC

Can some one with these two pieces of information get a hold of the psk key, or its a blind attack that can be done using dictionaries or/and word-lists ? If so please add some resource like a link ...