WiFi is a networking technology permitting the exchange of information through wireless (radio) connections.

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11
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3answers
1k views

Can SSH passwords be sniffed out over Wi-Fi?

When you ssh, can the password you enter to connect, be intercepted if you're using untrusted public Wi-Fi (coffee shop, library, airport, etc).
9
votes
4answers
234 views

Equivalent of iwlist to see who is around?

What is the equivalent to: iwlist wlan0 scan to see who (what computers and smartphones) are around me? Maybe putting the card into monitor mode before doing it.
8
votes
2answers
988 views

Measuring internet connection quality

I'm having WLAN trouble on my dualbooting win/linux laptop - the connection on linux side has occasional trouble, and seems somewhat slow and chunky. I would try to fix this issue by fiddling with all ...
8
votes
4answers
9k views

Ubuntu 12.04 hotspot wifi network not visible to Android 4.1.2

I'm running Ubuntu 12.04 LTS on my notebook, and I've got a Motorola Razr which I updated to Android 4.1.2. Before updating, I connected my smartphone to my hotspot wifi very quickly, but after the ...
7
votes
1answer
1k views

Linux find Wifi Networks trotocol(a/b/g/n) version of all available access points

I do use iwlist wlan0 scanning and it gives me a fair amount of data, but one part is missing. It is protocol version. By protocol I mean (a/b/g/n). It would be very good to have these commands in ...
7
votes
5answers
1k views

Unable to connect to a wifi network with a special SSID

My current wifi network (and i'm writing this with the help of Windows -.- ) has a special character in it's SSID: "ö", a so-called "umlaut". If changing the SSID is not an option, how to connect to ...
6
votes
1answer
442 views

How to connect two machines via wifi and no other hardware?

Without using any other hardware, I want to connect two machines that have wifi, so that I can transfer files between them, for example.
6
votes
1answer
720 views

Wi-Fi constantly disconnects

Using either NetworkManager or Wicd to manage wireless networking on my Wi-Fi-powered laptop, too often I get randomly disconnected, and I see these messages on /var/log/syslog: Dec 10 05:21:26 ...
6
votes
1answer
230 views

Auto-switch to wifi

Need to connect to specific wifi point as soon as it is in range. If it is out of range, then system must stay connected LAN. In case, any wifi-point is in range, there must be auto-switch.
6
votes
1answer
2k views

Terminal commands equivalent to NetworkManager's “Use as Hotspot” option

I'm making a gui application which will control my laptop in order to make it act as a wifi hotspot. I may change distributions so I want to find a solution which will work generally for all ...
5
votes
2answers
528 views

What is reliable, autoconnecting wifi manager?

openSUSE 11.4, one wifi connection with static IP. Requirements: after autologin connection should be automatically established with defined static IP after connection dropped, manager should try ...
5
votes
4answers
4k views

All commands that should be used to connect to wifi in command line

I would like to switch from gnome to awesome and I would like to connect my wifi network in command line (instead of using gnome tools). So, I searched on the internet and found approximatively the ...
5
votes
1answer
4k views

Where are NetworkManager's WiFi settings stored?

I remember the days of playing with /etc/$WE/wpa_supplicant.conf to try and force a semi-secure network on a debian based system, but now on to xubuntu, I haven't needed to do any *.conf-ing in a ...
5
votes
1answer
356 views

How to confirm/verify WiFi is WPA2?

How do I, from the command line, confirm on the host that the wireless network connection uses WPA2? The wireless router is set to use WPA2 Personal (WPA2 with a pre-shared key) and AES on the ...
5
votes
2answers
359 views

escape characters in /etc/network/interfaces

I want to be sure that whatever string I pass into the line wpa-ssid "abc" in /etc/network/interfaces won't be used to break out of the configuration. All I can find in the manual is that \ can be ...
5
votes
2answers
1k views

Use wpa_supplicant without plain text passwords

I'm running gentoo on my laptop, and I'm currently using wpa_supplicant to handle wifi. My configuration works and I can connect, but it is required to type in the plain text password into the ...
5
votes
1answer
2k views

Hotspot and Internet access together — why not?

If I try to set up an hotspot in GNOME, I get the following message: If you have a connection to the Internet other than wireless, you can use it to share your internet connection with others. ...
5
votes
1answer
120 views

Create a wifi hotspot on Gnome 3 / Arch Linux

I'm trying to create a wifi hotspot in gnome shell and Arch Linux. I open "System Settings" > "Network", then I select "wifi" on the LH side and click "Use as Hotspot..." on the bottom. The system ...
5
votes
1answer
3k views

Monitor mode wifi only seeing broadcast packets

I have pretty much exhausted every link I have found on google regarding this topic, and I'd like some of the most experienced eyes on the problem, because something obscure must be going on. Systems ...
5
votes
1answer
411 views

How can I setup a wifi access point to only allow users if they accept an EULA?

I need to setup an access point to only allow users through if they first accept an EULA. To make things slightly simpler, I'm looking into doing this with a unix machine that shares the connection ...
5
votes
1answer
660 views

Debian Wheezy + Hostapd 1.0 + ath9k randomly failing

I got a problem with my soft AP. I got an old PC running as router which has 3 NIC and 1 wifi PCI card TP-Link L-WN751ND. This box runs Debian Wheezy, hostapd, dhcpd etc. The problem is that AP ...
4
votes
2answers
8k views

How to find out which Wi-Fi driver is installed?

I know about lsmod, but how do I figure out which driver does what?
4
votes
2answers
1k views

How to override port settings when connecting to a public wifi?

I am connecting to a free public wifi, I want to connect or use other ports like FTP and SSH. What are the possibility to override it? In order to connect to the internet, They are requiring me to add ...
4
votes
1answer
3k views

Using the Wifi of a notebook via ethernet for another PC

I want to connect a PC to the internet via my notebook, which is connected to a WLAN. The setup should look like the following scheme: PC (eth0) -> Notebook (eth0) -> Notebook(wlan0) -> ...
4
votes
2answers
1k views

What tools do I need to intercept and change an incoming packet on a WP2-Personal wifi hub

Which tools should I research into to intercept a plain text packet, edit it and then continue it on it's way. I am using Ubuntu 11.04 and Backtrack 5; my wifi is WPA2-person encrypted. I need to edit ...
4
votes
2answers
5k views

Can Linux support a “Ralink corp. RT2800 802.11n PCI” (maybe a RT2860STA?) in an Asus EEE 901 netbook

OK, I know that this isn't going to be straightforward, but I'd really like to get it working. About 18-24 months ago, my Asus EEE 901 netbook was working fine - running Ubuntu - and I let it ...
4
votes
2answers
77 views

How do I authenticate to a wireless provider's “open” network without using a browser?

This sort of a setup seems to be common in shopping malls and airports. In Western Canada Shaw provides such a service and calls it "Shaw Open". I'm pretty sure other locales have similar services ...
4
votes
3answers
1k views

scp transfers slow down and stop over local network

I'll often transfer items to and from my laptop on my local network using scp. Often, it seems, I'll see the transfer rate start out right (2.0MB/s), then slowly diminish until the transfer completely ...
4
votes
1answer
1k views

How to create an ad-hoc connection?

I need to make an adhoc connection on Archlinux (netbook used as a wifi repeater), I was using this tutorial to do it on Ubuntu : At the terminal install execute sudo apt-get install dnsmasq-base ...
4
votes
2answers
338 views

Powertop strange results

I have installed Ubuntu 11.04 and battery life decreased by 2 times. Powertop documentation says that there should be 3 wakeups per second, I have 800-900. I think it's very strange because I didn't ...
4
votes
1answer
808 views

Can I spoof the MAC address in Android?

Is it possible to spoof the MAC address of the wireless interface using wpa_supplicant.conf in Android when I connect as a client to an access point? Edit Unfortunately, Android doesn't support ...
4
votes
1answer
384 views

How to disable wifi autonegotiation on debian6.0

I would like to disable automatic wifi negotiation on my 1000HE eeepc. WiFi Chipset is a ralink2860sta. I am using the non-free module and everything is working as intended except it tends to pick up ...
4
votes
1answer
5k views

How to extend my wireless network with OpenWrt

I have two routers, both running OpenWRT 10.04 The first is a WRT160NL router connected to my ISP. I am using it as an access point with the ESSID of "160AP". It's WEP password is "AAAAA" and it's ...
4
votes
0answers
211 views

Unable to reconnect to a WiFi network on Fedora 20?

Problem After leaving my Fedora 20 laptop running overnight, I open it back up and it prompts me to re-enter the password for my home WiFi network. The password is already typed in and censored, but ...
4
votes
2answers
526 views

How can I tell if my wifi dongle has access-point capabilities?

I have a Realtek 8191SU USB wifi dongle for use on my Raspberry Pi. I'm trying to set up a wifi access point using this tutorial. However, I'm running into a few errors, and I suspect it might be ...
4
votes
3answers
3k views

Is there a way to list the connected devices on my wifi access point?

I have an Angstrom Linux device acting as an access point, running hostapd, dhcpd, which works fine. Can I get a list of devices connected to the Wi-Fi? I know I can get the DHCP leases, but I need to ...
3
votes
3answers
1k views

How to bring up a wi-fi interface from a command line?

I can't figure out how to properly bring up the wi-fi card on my laptop. When I turn it on and issue $ sudo iwconfig wlan0 txpower auto $ sudo iwlist wlan0 scan wlan0 Interface doesn't support ...
3
votes
2answers
132 views

How can I print out information about a Wireless Access Point in range?

How can I print out information about a Wireless Access Point in range? Can I for example get the MAC address?
3
votes
1answer
2k views

Connect to hidden Wifi AP with wpa-supplicant?

I have a headless Debian machine, with a Wifi dongle connected. I used to hide the Wifi AP, but now I can't. If I unhide it, some lines in the /etc/network/interfaces will allow me to connect: auto ...
3
votes
3answers
1k views

SCP works, but SSH doesn't (over wifi)

As the title says, when I'm using wifi at my office, I'm able to copy files to and from my server using SCP, but for some reason SSH is non-responsive. It just hangs, doesn't print anything, and I ...
3
votes
1answer
56 views

How can I prefer one wifi network over another?

From my home I have access to my home wifi network as well as a public network that is deployed throughout the city. The public network has a lower signal strength and is unprotected. However, my ...
3
votes
1answer
423 views

How to disable the 2.4Ghz band wireless adapter

For debugging purposes, is it possible to disable the 2.4Ghz for wireless connections on Linux (Linux Mint 13 LTS, Cinnamon). I.e. to enforce the network driver to establish connections using the 5Ghz ...
3
votes
2answers
940 views

Equivalent for netsh start network on linux

I recenty read about the Windows option for creating an access point, that will run on the same physical device, as the machine. So that I can connect my other devices to that network, and have access ...
3
votes
2answers
3k views

Driver for Intel 2200BG wireless network card

I'm trying to make work my wireless network card Intel 2200BG in my laptop Acer Travelmate 4002WLMI. I tried so far: $ sudo lshw -C network *-network:1 description: Wireless interface ...
3
votes
1answer
116 views

wpa_supplicant: connect to WLAN in the background (during boot)

I am using manual configuration to connect to my WLAN. In my wpa_supplicant.conf, I have something like this: network={ ssid="mywifi" key_management=WPA-EAP ... } and then, in my ...
3
votes
1answer
224 views

How can I make sense of wpa_supplicant's different signal level outputs?

I'm using wpa_supplicant 2.0 on Linux x64 with a USB wifi adapter (rtl8192cu). When I do a scan from wpa_cli, I get wildly different numbers (alternating between positive and negative) even for the ...
3
votes
1answer
804 views

Connecting to wifi network through command line

I am trying to connect to my WEP network just using the command-line (Linux). I run: sudo iwconfig wlan0 mode Managed essid 'my_network' key 'xx:xx:... hex key, 26 digits' Then I try to obtain an ...
3
votes
1answer
1k views

The n mode on “iwlist wlan0 scan”

I know how to determine if scanned AP uses B or G mode, but how to know (using "iwlist wlan0 scan") it uses N protocol ? if I use "iw dev wlan0 scan" and see if the cell has a "HT capabilities" block. ...
3
votes
1answer
3k views

How to check if my wireless connection uses AES or TKIP from a terminal?

I have a wireless router that has settings to use AES, TKIP or AES+TKIP encryption for wireless connections. My Linux-based device does not like AES (it drops out from time to time), my girlfriend's ...
3
votes
2answers
7k views

Firmware for wireless card on Ubuntu/Debian?

This is a follow up to my previous question about Debian support for Linksys Wusb600n. I have tried running the Ubunut/Xubuntu LiveCDs and the WiFi does not come up. The Gnome Network Manager menu ...