Questions tagged [wifi]

WiFi is a layer 1 and 2 networking protocol for wireless communication between devices. It is typically used in local networks for client access, but can also be used in point-to-point network links. WPA is used to encrypt traffic.

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7 views

802.11r info from connected network

I have Keenetic Ultra AP/router and Devolo Magic WiFi 2 extender in another room, they are connected by powerline. I want to setup Fast Transition (802.11r) between them. In the Keenetic settings I ...
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How to create LAN proxy server with traffic funneled through ssh -D

I want to create a SOCKS proxy server on my LAN, so it will be available to all users on wifi. My goal is to funnel all the traffic from the SOCKS port on the lan server through a ssh -D connection. I ...
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DHCP issues in company network

I'm experiencing some issues with some DHCP clients, sometimes they cannot get DHCP leases. My company has a Windows Server 2016 DHCP server with a failover twin server, both are also domain ...
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How can I set up a layer 3 bridge using Proxy ARP such that http requests can be made to the inside/proxied host's IP successfully?

Currently I am using a Raspberry Pi to bridge an ethernet connected printer to wireless internet and have used DNAT successfully to give the printer internet access, manually forwarding the printer's ...
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Asus router turned nas using samba cant be seen on the host network

So my network is as follows BT ISP ROUTER | |every wireless device | | | Asus router set in repeater mode with USB plugged in to use as network storage Currently, I am able to use the network storage ...
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I'm looking for a way to monitor and log the availability of internet at a particular location

I'm troubleshooting an issue which I suspect may be related to unreliable internet. I'm looking for a way to create (or a tool that already does create) a log of internet access over time. E.g 8am ...
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24 views

How do Wireless Security Protocols work? [closed]

For example, my home router use WPA2-AES as wireless security protocol. When I access a webpage, traffic coming from my desktop to home router will be encrypted with WPA2. However, when my router ...
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95 views

Persistent storage in captive portals or mobile internet while wifi connection without internet

I have a little problem here: I want to create a WiFi network, which does not provide internet access. The WiFi network should only serve one website to the user like in a museum. That's pretty simple ...
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systemd raspbian wpa_supplicatant access point not working

Moving on from my prior question about identifying source of a wireless SSID, I am now ready to move on to the next challenge. Most of the documentation I found for wpa_supplicant and creation of a ...
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33 views

How to identify server providing wireless SSID name

First, a lot of background so that you'll hopefully understand the reason for the question. We had a catastrophic failure in our network - a surge that took out a couple of systems' network interfaces,...
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Mysterious Wi-Fi Direct Broadcasts

At my company, or networking and info sec teams noticed mysterious Wi-Fi Direct broadcasts on our network from our corporate laptops. I'm currently looking into this issue to figure out what's causing ...
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Abnormal port request on Linux system

I am using Debian Buster and Android 9. Checking the network activities I noticed that it scans many ports. How can I determine who is the cause or if this is normal? I connect the mobile phone to the ...
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How can I measure the speed between laptop and wireless access point?

How can I measure the speed between my laptop and the wireless access point it’s connected to? Notes: when measuring the speed of the general connection to the internet, I’d use something like ...
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WiFi 6 2x2 vs WiFi 5 4x4

I am in the process of an infrastructure build out and I’ve narrowed down my AP selections between two. One being a 802.11ac 4x4 MIMO and the other being a WiFi 6 (802.11ax) 2x2 MIMO. Does anyone have ...
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How to connect Brother MFC-L2720DW from the laptop or connected by wire or through Wi-Fi?

(I have very low experience with local networks. I need to connect the shared printer...) The Brother MFC-L2720DW printer allows 3 ways to print: through USB cable, through wired LAN (patch cable, ...
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Wireless clients connected to the repeater not getting IP addresses from the DHCP server

I have a Mikrotik wifi router and an Asus wifi router configured as wireless repeater connected to the Mikrotik. The connection between Mikrotik and Asus is through wifi. Asus is getting IP address ...
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How can I use a LTE interface inside a docker container?

For my customer, I have to setup docker containers on separate machines that run various services on various physical links. I cannot use "host" mode for my docker containers. So far, I have ...
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Endpoint manager Wifi - Enterprise setup

Currently the site has deployed some devices using endpoint manager (Intune). One issue that we have run into is getting EAP configuration within endpoint manager to sync with on-prem Network Policy ...
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xubuntu using hostapd and freeradius log

I want to show the log file of freeradius with good pass and bad pass when user is trying to connect.I found this: https://www.techonia.com/5767/log-authentication-requests-freeradius I use auth=yes ...
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Use ethernet port for smb share transfers, but smb should still be accessible over wifi [closed]

I'm pretty new to Linux networking and I'm not sure how to fix a file transfer issue I have. I have two Raspberry Pis. One is running Raspberry Pi OS and the other is running OSMC. Both are connected ...
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36 views

Access a node from different subnet

I've made a web-application which I installed on a dedicated server connected to our company's LAN. I just have one problem. All the nodes on LAN have 192.168.138.x subnet mask. But wi-fi access point ...
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Why does setting MTU 1452 solve Internet problems and how to fix root cause?

In our church we get Internet uplink from a friendly neighbor’s WiFi. At first everything seemed (at least) fine but since some weeks general “Internet stability problems” increased and since approx. ...
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Capturing IEEE802.11.x auth and capabilities data with tcpdump?

I'm troubleshooting some issues with my wireless network (OpenWrt 19.x and mobile device) and I came across this: https://dot11.exposed/2017/09/20/violation-of-802-11-standard-intel-wireless-cards-...
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212 views

Unable to locate package firmware-b43-installer (Debian)?

0 I have a laptop that I installed Debian(buster) onto that has no GUI also known as (CLI). But for some reason, I can't install firmware-b43-installer it comes up with this error E: Unable to locate ...
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What are the causes for wildly changing but somehow cyclic RTTs on a 2.4 GHz network?

I have an AP that serves both 2.4 and 5 GHz networks (on separate SSIDs, without fallback). The neighborhood is quite busy (residential neighborhood) A ping from a wired device to a device on the 2.4 ...
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119 views

Hostapd gets enabled but can't connect to it

I am setting up a hostapd on a wifi chip hooked to an application processor running linux, and though I'm able to start a network and is visible in the available networks, I just can't seem to ...
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Setting up a roaming local network

I'm trying to set up a particular network topology I haven't worked with before, and I'm having some trouble figuring out what I actually need. In a traditional SOHO network, you would have a router ...
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107 views

does wireless access point support internet from ISP

As I know a wifi router can be used establish a local wireless network by connecting ethernet cable to it from ISP, Is it possible to do same thing with wireless access point?
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113 views

Mikrotik hotspot issue - login page not loading

I've configured a hotspot on a Mikrotik CCR1036-12G (OS 6.47.4), but after the device connects to the wifi and asks to authenticate in the network, the login page remains loading for a while and ...
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67 views

Wifi on CentOS Minimal 8

I am having a very hard time making Wifi work on a Minimal Centos 8 installation. Using nmtui I can make Ethernet/Wired work, but I cant make Wifi work. It does not even show up on nmtui, only Wired ...
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187 views

DNSmasq Forward DNS on Multiple Interfaces

I am using hostapd to setup WiFi hotspot networks on my Ubuntu 18.04. I am using this guide to setup multiple SSIDs on my WiFi interface. And to enable DHCP on the hotspot networks, I use dnsmasq. I ...
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704 views

Use Smartphone as gateway to internet for my local network (Not smartphone hotspot!)

Am I able to use my Android smartphone with 4G LTE internet access as some kind of gateway to internet? I need anyone who is connected to my local network made with Wi-fi router to be able to access ...
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How to properly add more lan devices ? Home network

I have a small home network. 1 router with wifi and 4 lan ports. The problem is that I don't have enough lan ports and I want to extend it. I have a few possible solutions but I feel like none of them ...
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rtk8192ee wifi firmare stops loading after ifenslave setup attempt (Debian 10)

I tried setting up Mode 0 NIC bonding using ifenslave between my Ethernet and WiFi cards on Debian 10. After numerous ifconfig wls1 up/down, I was able to set up Bond0 until it stopped working. After ...
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Ethernet is disabling WiFi [closed]

We are working in iMX6 board running in Yocto 4.9.88 build. It has both Wifi and Ethernet connections. When we connected WiFi alone, pinging is working properly. Pinging works if we connect Ethernet. ...
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System resume kills wpa_supplicant

Using debian distros for a few years. All distros from the last few years seem to share a wierd wpa_supplicant issue. Has anyone else attempted to solve/understand this issue during sleep/resume? ...
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66 views

How does Wifi autoconnect work?

I have an access point which has died, I'm attempting to replace with a similar product. Which properties do I need to clone off the dead access point to coerce all clients who have previously ...
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92 views

802.1x RADIUS Clients not receiving Access-Accept

I'm running Network Policy Server on a Windows Server with the latest updates. The authentication method is PEAP with MS-CHAP-v2. A few weeks ago, everything was working fine but now our wireless ...
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1answer
78 views

WAP Assigns same IP addresses for 2 or more devices occasionally [closed]

I am new to being a sysadmin and am still learning so apologies if I say anything incorrect or flat out wrong. Where I work we have a wifi network consisting of several different WAPs that spread the ...
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RTNETLINK answers: No such device /Wireless card /kali linux

I've got an issue with alfa AWUS036NH. I cannot set it up. I get info : "No such device" or "Input/output error". I used command : "sudo ip link set wlan0 up" Kali version :5.5.0-kali1-amd64 release:...
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27 views

Inform all clients on a network about a password change

I have a use-case where a bunch of my remote devices are connected to a 2.4GHz WiFi network on a router. The SSID and password are known to these devices. Due to security reasons, the passwords need ...
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How to increase wifi beacon timeout in Linux NetworkManager?

I use ESP8266 in AP mode and connect to it using HTTPS. Unfortunately the device is not very powerful and TLS part makes it so busy that it doesn't transmit wifi beacons for a short time (as far as I ...
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75 views

Bad WLAN routing behaviour when switching AP

I have come across a number of variations on the problem described below with router/access-points and WiFi range extenders from various manufacturers. All devices are wireless. LAN/WLAN made up of ...
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1answer
362 views

Apartment-wide single SSID / multiple password Wi-Fi network security concerns?

My apartment building is changing internet providers, and the new provider plans to install a network that will have a single SSID for the entire building. Each tenant will be given a unique password ...
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Internet connection on Windows takes 10-15 minutes to kick in

I am seeing some strange behavior in a client setup and would like suggestions on what to investigate. Setup is a hotel WiFi setup with Unify Access Points. Client has several devices (a few laptops, ...
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Laptop A is sometimes blocked from pinging laptop B. Pinging in reverse unblocks it

I have had this problem dozens of times, ususally spaced out by days or even weeks. Router R can ping laptop A, laptop B, and the internet (0% packet loss in each case). Laptop A can ping router R ...
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341 views

Basic setup of an Aerohive AP245X via CLI

I recently acquired an Aerohive AP245X (Rev. A) secondhand without a GUI of any sort. I reset it by pressing the button for however long. Now I want to set it up as a normal Wi-Fi router w/o any ...
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149 views

Skype for Business Issues with Wi-FI Network Card/VPN (Presence Unknown/Can't Sign in)

Background: The Company I work for received new Dell 5400 and 5500s that have intermittent issues connecting to Skype for Business (issue was replicated on multiple versions) on a WiFi connection ...
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1answer
112 views

MikroTik: Set scan-list in RoS to ONLY use 2.4 GHz non-overlapping channel frequencies

How do I set the scan-list in MikroTik RouterOS to use only 2.4 GHz non-overlapping channel frequencies?
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WiFi: Frequencies that map to non-overlapping 2.4 GHz channels 1,6 & 11

I'm configuring a wireless router. I know the non-ovelapping channels are 1,6 & 11. However, my router only specifies frequencies that I can select, not channels. What are the frequencies that ...

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