Questions tagged [wifi]
Security for 802.11 wireless networks.
1,483
questions
27
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2
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How is this "captive portal" intercepting and manipulating my HTTP requests?
I sometimes use a free Wifi service to get access to the internet.
Like most/all providers of services like this, this service employs a captive portal. So if you try to make a HTTP request (request a ...
27
votes
7
answers
15k
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Safe to make a VPN connection over coffee shop WIFI?
On my work laptop I regularly create a VPN connection that I use to remote desktop to our web server. Is this safe to do on a coffee shop where random people are connected to the same wifi network?
26
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15
answers
17k
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How to block or detect user setting up their own personal wifi AP in our LAN?
Recently, I found a user plug a USB Wifi stick on his desktop, and set up an AP without password.
How can we detect or block this via firewall rules or other approach?
26
votes
2
answers
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Why can't we perform a replay attack on wifi networks?
I was wondering that, when a hacker is trying to hack a Wi-Fi network, they would try to capture a handshake and then try to decrypt it, whereas when you want to log in to your Wi-Fi access point, you ...
26
votes
1
answer
8k
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What is stronger - WPA2 Enterprise with 2048 bit key, or Personal with 63 character passphrase?
Which of the two following has a stronger cryptographic strength in withstanding brute-force attacks?
WPA/WPA2 Enterprise using 2048-bit RSA public-key
WPA/WPA2 Personal using 63-character ...
26
votes
3
answers
44k
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How to check if a Wi-Fi network is safe to connect to?
I always feel scared to connect to hotel, airport Wi-Fi etc. I feel that if the Wi-Fi router is hacked, my personal information can be collected by a hacker. How can I determine if a Wi-Fi network is ...
26
votes
2
answers
118k
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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 pros and cons of using one configuration or the other?
25
votes
4
answers
7k
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Identification of a laptop using a spoofed WiFi MAC address
I own a small coffee shop in a highly-populated area. We've noticed that several computers are connecting to our WiFi network using spoofed MAC addresses (e.g. 11:22:33:44:55:66). Is there any way of ...
25
votes
2
answers
18k
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How does WiFi password cracking work?
Let's say I have a wireless network that is password protected.
What procedures can an intruder take to gain access to my wireless network, or at least be able to decipher the packets I am sending ...
24
votes
9
answers
75k
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What are the security implications if someone got my home WiFi network password?
I gave my WiFi password to a guest. I'm wondering how can he exploit this opportunity? Like, can he access my other devices localhost servers? Can he brute force to get the password of the router to ...
24
votes
2
answers
7k
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Rude neighbor with PineAP or something similar
For the past week or so I've been having problems with wifi in my house, and it appears that my neighbor set up a Pineapple or something similar that is running a known beacon attack and/or Karma/...
23
votes
8
answers
7k
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Is there a way to make a WEP-secured AP uncrackable?
For some days, I was feeling that my Internet bill was booming. Then, I recently found out that a boy near my house was accessing my router to use the Internet. Then, I read some articles how to crack ...
23
votes
6
answers
10k
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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 ...
23
votes
7
answers
76k
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Can a WiFi access point operator tell that I'm streaming video to my phone?
I work at an office typing numbers into a computer. It gets quite boring sometimes, so I go on Netflix while using their WiFi on my phone.
Can they tell what apps I'm using, based on network traffic?
23
votes
8
answers
48k
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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 device....
23
votes
3
answers
96k
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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 ...
23
votes
3
answers
17k
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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 ...
23
votes
2
answers
55k
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Wireless client isolation - how does it work, and can it be bypassed?
Many SOHO routers these days support a feature called "wireless client isolation", or similar. What this is supposed to do, in principle, is to limit the connectivity between wireless clients ...
22
votes
1
answer
3k
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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 ...
21
votes
3
answers
12k
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Can an attacker sniff Mac addresses on a wifi?
If an attacker turns on wifi but doesn't have the security key to connect to an access point in range, can he still sniff packets that travel between the access point and clients connected to the ...
21
votes
2
answers
41k
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Do VPNs provide sufficient protection over public wireless networks?
I know that VPNs are the standard way to secure communication between a remote user and their primary network, but I've never felt entirely comfortable relying on them when using an open wireless ...
20
votes
3
answers
10k
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Is WEP still a thing?
I was studying the Wi-Fi security section for a pentesting certification the other day and there is an extensive part about cracking WEP. Is going in-depth on WEP cracking worth it anymore?
According ...
20
votes
3
answers
8k
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Are open wireless networks unencrypted?
When you connect to an open wireless network (that is, a wireless network without any symmetric password set) is there any sort of secure key exchange going on, or is data sent back and forth ...
20
votes
4
answers
15k
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Should I only let my TV connect to the guest WiFi?
According to this Kaspersky blog post, it is a security risk to connect IoT devices, such as Smart TVs, to my home WiFi. It claims I should use my guest WiFi network for this.
Is this true? Is it a ...
20
votes
4
answers
3k
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Is a VPN really required with free Wi-Fi on a train?
Our local train service has added free Wi-Fi.
I have been checking GMail and logging into a few apps. Then logging into websites using HTTPS. Is this secure, especially if done via app?
The network ...
19
votes
8
answers
333k
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Can an employer see what I'm doing on my iPhone whilst logged onto wifi
I log on to my works wifi throughout the the day whilst at work, I use apps like WhatsApp and iMessages to communicate when I need to, can my employer see the content of those messages (actually read ...
19
votes
4
answers
4k
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Threat assesment for a captive portal
I am interested in setting up a captive portal on a wireless network.
From what I understand I would do this by initially having all guests in a temporary vlan, moving them to the real vlan when ...
19
votes
4
answers
241k
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Can my family see what sites I visit while I am on their wifi?
I will be going on vacation for a few weeks to my family home and will be using their wifi for work. The problem is, I am a cam model, and do NOT want them to know that I am visiting the sites let ...
18
votes
4
answers
9k
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How to use public WiFi safely?
The Dangers of Open Wi-Fi
How does one go about sending valuable information (for example inputting email username and password) over a free password-less public WiFi network?
The only option that I ...
18
votes
4
answers
6k
views
Is HTTPS secure over public Wi-Fi with an expired certificate?
I am staying at a hotel with free public Wi-Fi. To get Internet access I had to visit a web page and agree to the terms and conditions. This website has a security certificate, but it expired over a ...
18
votes
3
answers
21k
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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 ...
17
votes
6
answers
6k
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How can I protect myself from KRACK when I can't afford a VPN?
I'm always using Wi-Fi networks, since I move a lot. But I don't think I can afford a VPN for the moment (I know they're cheap) to protect myself against KRACK when connecting to those Wi-Fi networks.
...
17
votes
2
answers
13k
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How to force clients to connect to WiFi automatically?
I have watched a hak5 YouTube that they did make people connect to their wifipineapple (a WiFi Honey pot) , and they stored the Wi-Fi hotspots, those the phone used to connect to.
The historical ...
17
votes
3
answers
9k
views
Does disabling WiFi and mobile data make my phone impossible to hack online?
As I understand, a relatively outdated phone (Android 5, not updated for a few years) could be easily compromised by using security exploits through WiFi, mobile data, NFC or Bluetooth.
I'm about to ...
17
votes
7
answers
5k
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Stopping ill-mannered use of guest wifi [closed]
I support a small business' tech issues including setting up a guest WiFi network. The WiFi is important since they want people sitting around and consuming their product. Over the past months they'...
17
votes
3
answers
3k
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Did someone impersonate my WiFi?
TL;DR: An unknown WiFi extender showed up in my DHCP logs and my phone routinely connected through that access point. How badly was my network or traffic at risk?
This morning, while struggling with ...
17
votes
3
answers
3k
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Does using a VPN protect against KRACK?
Does using a VPN protect against KRACK? How does this work? How can it be bypassed?
I use a commercial VPN on my laptop and on Android. Is an OpenVPN connection to your home a good way to protect ...
17
votes
2
answers
39k
views
Why can I cast to my neighbour's TV on my Wi-Fi?
I've recently noticed that a new device shows up as available to cast to from my android phone when I'm logged on to our home Wi-Fi. It's an LG Sk8100 TV, but as we own no such TV. I'm assuming it's ...
16
votes
4
answers
9k
views
Security risk of connecting to two networks simultaneously
My employer issues a list of security recommendations when using a work laptop outside of the work network. The security recommendations are related to such risks as data theft, viruses, or other ...
16
votes
5
answers
6k
views
What are potential security risks when using an insecure wireless connection?
If someone is using an insecure wireless connection (for example a hot spot in a coffee shop) does it pose a threat even if the person is using a secure application layer protocol? What I mean by ...
16
votes
3
answers
38k
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My school wifi asks to 'trust' a certificate on iPhones. Does this allow them to view SSL traffic?
There is a lot of confusion around this on here, so I am making this post to be sure to understand it correctly. My school uses Aruba networks wifi, and after I type my Active Directory username and ...
16
votes
3
answers
18k
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Security risks of disabling SSID Broadcast
I recall having read several articles online, and even passing along the advice, stating that disabling SSID broadcast is not only useless as a security measure but also harmful to the security of the ...
16
votes
7
answers
39k
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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 ...
15
votes
1
answer
8k
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Can my university see the downloads from a Discord application when I use their Wi-Fi connectivity?
I didn’t use a VPN, and I am asking myself if my university can see the downloaded files or even the fact that I opened the Discord application to download.
15
votes
3
answers
28k
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What is the need and purpose of packet injection within WiFi attacks
According to my research, the most common WPA/WPA2 WiFi attack requires a chipset capable of packet injection.
However I am not sure what this is, and what purpose it serves once you have the ...
15
votes
3
answers
3k
views
Are non-SSL connections safe in a local wireless network with password protection
Shortly: I am working on a project in which several IoT devices are connected to a WPA2 password and MAC filtering protected hotspot. Can the communication in this network be leaked since I do not use ...
15
votes
5
answers
5k
views
What computer information can WiFi networks see? [duplicate]
I'm on a school WiFi network, and it's school policy to record basic PC info(name, IP, etc), along with the student name when they add the computer to the WiFi network. My assumption is that it's to ...
15
votes
2
answers
5k
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+ ...
15
votes
3
answers
3k
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Is it safe to log into crypto exchange account using coworking space or coffee shop wifi network?
I day trade cryptocurrency and want to start using coworking spaces for faster internet access.
1.a. Is it safe to log into my exchange account using the coworking space network?
1.b. What ...
15
votes
3
answers
10k
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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 ...