Security for 802.11 wireless networks.

learn more… | top users | synonyms

10
votes
7answers
31k 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 ...
0
votes
1answer
4k views

Is this possible to use fake AP to get wpa keys? [duplicate]

Possible Duplicate: Is it possible to speed up WPA/WPA2-PSK cracking using a rogue AP? Is it possible to get the WPA preshared key with a fake AP with the same SSID ?
4
votes
3answers
2k views

How do I protect myself against 'hole 196'?

I came across this question a while ago and read about hole 196. Is there something I can install on my laptop to protect it against WPA2 Hole196? Software (such as Snort or DecaffeintID) can ...
11
votes
6answers
13k views

Is my computer at risk of being hacked when using public Wi-Fi?

I'm sitting at a cafe, using their public Wi-Fi. I don't go on sensitive sites; I basically go to a music site and listen to a live stream, for which there's no login. I don't check my email or visit ...
1
vote
2answers
36k views

WiFi WPA cracking with Reaver [closed]

This question is for anyone who has tried or succeeded to crack WiFi WPA/WPA2 keys with BackTrack Linux and Reaver. So, I wanted to test it on my WiFi router. I started everything as described here. ...
5
votes
1answer
538 views

What is this hotspot doing to my traffic?

I'm currently staying at a Four Seasons resort using their Wifi. I noticed that while surfing all non-https sites, my webpage seems to be forced into a frame. For example, here is what google's ...
7
votes
4answers
1k views

Why don't wifi managers remember mac addresses for hotspots to defeat the jasager attack?

So I just learned about the jasager attack, via the wifi pineapple and it struck me immediately that it wouldn't work at all if network managers (privately) associated MAC addresses with hotspots and ...
2
votes
1answer
4k views

How can I decrypt traffic on a WEP encrypted network?

Let's say that I am connected to a WEP Access Point and I want to sniff all wireless traffic inside that network. How can I decrypt the traffic even though I don't have the cryptographic key? I found ...
-2
votes
2answers
324 views

Is Wi-Fi Protected Setup still safe? [closed]

According to this paper it is cracked: http://sviehb.files.wordpress.com/2011/12/viehboeck_wps.pdf Using Reaver.
4
votes
2answers
570 views

intrusion detection on own hotspot?

Is it possible to detect failed logins on the hotspots you create with your windows/linux laptops? So you can detect some dumb brute force/guessing attempts? For example, a log like this: TIME DATA - ...
-1
votes
3answers
2k views

HTML payload rewriting?

I read an article about some hotel injection ads to every webpage using some router: http://justinsomnia.org/2012/04/hotel-wifi-javascript-injection/ Would it be possible to do this with any existing ...
4
votes
3answers
14k views

Is it possible to create a custom login page for your own Wi-Fi hotspot?

How do I create my own open Wi-Fi hotspot/access point with a custom login page similar to those found in commercial hot-spots? The page would be accessible using Windows or iOS, and users would have ...
7
votes
2answers
2k 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+ ...
1
vote
3answers
1k views

Wireless LAN router fingerprinting

Does anyone know of a database that lists the range of MAC addresses that are assigned to each particular brand of router? I would like to use this information for fingerprinting. I know I can find ...
2
votes
2answers
856 views

I fortuitously accessed the configuration of unknown router: how come and what now?

I've encountered a strange thing. I connected to an open Wi-Fi, then I was just fooling around. First, I visited 192.168.0.1 and it was a router configuration page but default password didn't work. ...
9
votes
2answers
1k views

The Dangers of Open Wi-Fi

I know that the first response to a question titled like so is "seriously?". I know the answers exists, but I am just trying to put everything together. Using and/or having an open Wi-Fi network is ...
0
votes
1answer
202 views

how to make a web based system that connects only the authorized user in the wi-fi access [closed]

this is for our thesis project. we proposed to study the Wi-Fi security in most related to the users.
2
votes
1answer
7k views

How mobile app WiFiKill can cut off internet access to neighbor devices?

There is a program for android- WifiKill which disables wifi internet access of some neighbor peers connected to the same wifi AP. How does this program work? ARP poisoning or some other techniques? ...
2
votes
1answer
489 views

How can wireless router password encrypts data using WEP and WPA

How does the password that we enter (to connect to a wireless network) encrypt the data on the wireless network? Through my reading I am not sure if the password that we enter is the same as the ...
6
votes
7answers
15k 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 ...
3
votes
3answers
527 views

Wireless security attack techniques

Before I ask for some advice, please don't assume I'm a script kiddie or such. This is for one of my wireless security class (CSS 1015). It's a Saturday class and only 6 students are in the class ...
10
votes
3answers
45k views

Can a hacker sniff others' network data over a wireless connection?

Provided that the hacker knows the WiFi password if any (WEP or WPA), is he capable of sniffing network data of other hosts connected to the same access point?
12
votes
3answers
7k views

How does deauthing work in aireplay-ng?

I have a question of how aireplay-ng works when it deauths. I mean, it is really easy to disconnect another client from an AP: you just need to run the deauth command (in aireplay-ng) once, specifying ...
5
votes
3answers
525 views

Why does switching to “n-only” help preventing attacks on WPS?

I just cracked the ap of a friend of mine (Linksys E4200) and we were looking for a way to rid him of the vulnerabilty. Unfortunately the E4200 does not disable WPS when you tell it to (via web gui). ...
6
votes
2answers
13k views

Detecting the presence of wifi devices

Is it possible, with a normal wifi adapter, to detect present wifi devices in the surrounding? Let's say, is it possible to detect an Iphone with wifi switched on in the range of my wifi adapter? ...
6
votes
4answers
2k views

How to keep secure while browsing on open wifi when SSL VPN is blocked?

After a recent visit to a hotel I was surprised to discover that they blocked access to my OpenVPN server. I often use this as a way to secure my internet traffic when I am on public wireless. ...
3
votes
2answers
211 views

How can I tell who's using my cookie information on an open LAN?

I think someone is using my cookie info to log into my Facebook account on a public Wi-Fi network. How can I determine if this is happening and from what IP address?
4
votes
3answers
679 views

Access point fingerprinting

Does someone know of a project or a way to "fingerprint" an access point (a router)? Fingerprinting should be done irrespective of broadcastet BSSID and ESSID. BSSID and ESSIS may be included in the ...
13
votes
9answers
26k views

Tracking down a rogue access point

Over the course of about a month we have received multiple reports of a rogue access point attempting to intercept traffic. I suspect an attacker is using a wifi pineapple, or similar hardware ...
-1
votes
1answer
5k views

How to know all the Connected devices to my Access Point including Phones [closed]

I need to list all the connected devices in my AP wireless network including mobile phones, also if it possible to know more information about each device, I am using Windows 7 and my access point is ...
0
votes
1answer
3k views

Wireless Adapters for Testing with BackTrack

I would like to begin testing and working with BackTrack. I have heard that the Alfa AWUS036H wireless adapter works well with BackTrack and allows for packet injection. This adapter, however, is ...
9
votes
2answers
638 views

How to implement secure device identification in a for-pay wifi router to prevent usage fraud?

After reading this question about how for-pay wifi routers identify specific devices it got me thinking about what a secure alternative might be. I know that certain research has focused on ...
5
votes
2answers
3k views

How is user authentication sent in a public wifi? Radius/802.1x/EAP etc

I visit the airport, I pull out my laptop and connect to a network (no password needed). I open up my browser and i am presented with a screen saying I need to pay to use the network. If I pay, I ...
10
votes
3answers
6k views

Do my Android apps use TLS or other encryption when connected to public Wifi? How can I tell?

I have an Android phone. When it's connected only to my carrier's 3G network I imagine it's reasonably secure against eavesdropping (although not invulnerable). However, at times due to lack of ...
3
votes
1answer
469 views

captive portal wikipedia article

Something on the wikipedia page regarding captive portals have confused me: http://en.wikipedia.org/wiki/Captive_portal When a client requests a website, DNS is queried by the browser. The ...
5
votes
3answers
2k views

Two SSIDs on same Access point- not good?

If I were to offer two networks (one for trusted users and one to visitors) on one physical access point, is this dangerous because a visitor could compromise the trusted network across via the ...
1
vote
2answers
168 views

hardware required for wifi security system

i am planning to implement one WIFI security system , in which one can lock or unlock door remotely. As i have serched over internet and i came across lockitron and schlage Now what i want to know ...
9
votes
3answers
947 views

Public wifi security protocols

I should apologise first- this post could seem a lot to ask for, but I am starting to go around in circles. I am interested in securing my laptop for when I use public wireless hotspots, as I am a ...
1
vote
1answer
571 views

Designing and managing a captive portal

I'd like to learn more about how a captive portal works, especially the management system regarding usage, security monitoring, billing, security architecture etc. Does anybody know any good ...
3
votes
1answer
3k views

Wireless MAC Address Filtering - Authentication/Association

Can somebody explain to me how a wireless AP denies access to the network if the client does not have the correct MAC Address. Does it not send a probe response when a client has not got a correct ...
4
votes
3answers
4k views

How can I check wifi activity?

I have a LAN network with three computers connecting to the Internet both through wired and encrypted wifi connections. Is there a way I can check who is connecting to the Internet via the wifi ...
2
votes
3answers
400 views

Sniffing the sniffer

A sniffs B while B is sniffing C. What's the traffic in A? Does A catches both B and C traffic or only B's?
4
votes
1answer
1k views

Is a public known password protected Wifi more secure than one without a password?

When connecting to a public Wifi from a café for example, some don't use a password and some do. If they do use a password it is often publicly known to everybody around. Does having a password on ...
3
votes
2answers
757 views

What additional difficulties are present in performing ARP poisoning on a secure wireless network (WEP, WPA) vs. an insecure one?

I just finished a project in which I coded a man in the middle attack on an unsecure network. I've tried to see how feasible it would be to extend this a secured network. Some internet searching has ...
5
votes
1answer
2k views

ARP-poisoning on wireless network - no packets

I've started working with ettercap and ARP-poisoning; however, I've sumbled upon some problems. I've executed the following command: ettercap -i wlan0 -w log -T -M arp:remote /192.168.1.254/ ...
3
votes
2answers
1k views

How is WEP/WPA2 key derived?

When I was a kid, WEP had a 40 bit key. Later, they came out with a 128-bit key. But as we all know, WEP was so badly-designed that the RC4 key length didn't really matter much. Ignoring this, my ...
22
votes
4answers
7k 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 ...
6
votes
1answer
9k views

Bypassing a captive portal with tor

I know that NSXTS and Iodine can be used to bypass a captive portal by taking advantage of permissive DNS firewall rules. What I have found recently is that simply by using Tor, I can also bypass a ...
1
vote
3answers
776 views

Preventing 3rd party DNS Servers from being used

While using a wireless network recently that implemented a captive gateway, I noticed that any third party DNS servers manually set would not allow the network to connect properly. This would seem ...
6
votes
2answers
7k views

Is it possible to speed up WPA/WPA2-PSK cracking using a rogue AP?

We know that WPA/WPA2-PSK uses a PTK (Pairwise Transient Key) for each client to encrypt the communication. This PTK is generated through the process known as 4-way handshake. As told in the related ...