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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What are the obstacles to providing reliable Internet access and Wi-Fi at large tech conferences? [closed]
Every tech conference I've ever been to, and I've been to a lot, has had absolutely abysmal Wi-Fi and Internet access.
Sometimes it's the DHCP server running out of addresses. Sometimes the backhaul ...
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Does Wi-Fi traffic from one client to another travel via the access point?
Consider a Wi-Fi network with one access point and two clients, operating in marginal conditions due to range, etc. Client 1 is communicating with Client 2. Obviously the Access Point (AP) must be in ...
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What is the maximum length of a wifi access point's SSID?
I was wondering if anybody knew what the maximum string length of a browser's SSID is or where I could go to look for that sort of information. (From a spec of some sort)
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How is it possible that I can do a host lookup but not a curl?
Has anyone ever seen this before? Note that this happens not only with google.com, but with every domain I try. It's a wireless connection (WEP), but I'm not sure how that would be relevant:
$ curl ...
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Is there a way to provide user-specific passwords for Wi-Fi?
Is there a way to provide user-specific passwords for Wi-Fi, so that different users have different passwords?
I'd like to provide each user with a different password for my Wi-Fi connection.
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Our wi-fi at work is ridiculously slow, will adding more range extenders improve it?
At work, we have two wireless networks (e.g., Work1 Work2); the Work2 is used downstairs and Work1 is used upstairs. However, both are notoriously slow. The connection is better when we are wired in, ...
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What's the maximum number of wifi connections for a single WiFi router?
We've got a Draytek 2829VN Wifi router and I'm wondering how many concurrent connections I should expect a router of this kind to cope with? We are looking to connect 60 iPads!
I'd also be ...
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Intermittently high ping times to router via Wi-Fi
On my local network there are (among others) 5 machines (running
Debian Jessie or Arch) wirelessly connected to a Netgear WNDR4000
router. Below is a graph of the ping times to the router
from each of ...
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What happens when wifi channels overlap?
There are many pages on the web advising the use of wifi channels 1, 6 and 11 only, so that your wifi channels don't overlap.
Obviously this makes sense when you only have your network do deal with, ...
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RTS threshold, fragmentation, and other advanced WiFi settings
Background: I'm in a noisy environment, and I'm trying to optimize my WiFi network to have a more stable connection for the somewhat high volume of users (~50-75 on a busy day). There are 4 APs, and I'...
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Leaving my wifi open for the world
For my home I want to be a nice neighbor actually I have let my wifi open for the past maybe 6 or 7 years. I know that WEP, etc can be cracked within a couple of minutes but my neighbors son who works ...
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Do wifi packets go directly node to node?
I have two nodes on a wireless network. Node A is streaming data to node B. Most of the time it works fine, but sometimes there is packet loss and the stream is interrupted.
To improve performance ...
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keep ssh connection alive and persistant while switching network interface connections
Scenario:
At my desk with laptop plugged in to ethernet and connected to remote server over SSH
Want to move to other side of office with laptop and change to WiFi without interrupting SSH ...
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Slowest wireless client dictates the connection quality of all others?
Not sure if this is the place to ask this, but I couldn't find a more appropriate StackExchange site. I heard that the quality of wireless connection follows the law of the lowest common denominator - ...
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Is there an equivalent command for 'init.d/networking restart' in OS X
From time to time, I've encountered issues with OS X clients' network connections (Wired and Wireless, Leopard/Snow Leopard) where nothing will fix the issue, until you reboot.
Is there a ...
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Long Distance Networking Options
What would be the best way to connect two freestanding farm buildings onto the same network? The total cable length would be less than 1000 feet. Cat6 is listed as having a max length of about 330', ...
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How to test real network throughput between two points?
What are some of the better tools/utilities for testing real bandwidth across a link? In my case I am testing the real throughput across a wifi bridge.
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Two-way high power outdoor Wi-Fi
Apologies if this is a schoolboy question but I've been asked by a client to look into installing Wi-Fi for their caravan park. More than happy with office Wi-Fi having done that for years but outdoor/...
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Who's using our bandwidth?
I can see from our ISP stats that a large amount of bandwidth is being used throughout the day, I suspect it's someone using our wireless router although I'm not definite. Our PC's all run various ...
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Why would wireless routers become less reliable over time?
I've been curious about this for awhile now. I don't know if I'm seeing a real pattern or not, but having worked with many home office/small office wireless routers for a few years now, I've noticed ...
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Serving 10,000 simultaneous users over Wifi
I'm looking to offer a wifi service at a public event. The traffic will be very minimal, 10KBps should be adequate. Users don't necessarily need to connect to anything other than the private intranet. ...
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Is it possible to find the physical location of a wireless router based upon the broadcast signal?
Say for instance, a longitude and latitude? The only information available would be that it is an available wireless network in range (secured or unsecured).
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Connect to multiple AP with one Wifi adapter under Linux/FreeBSD?
How can I connect to more than one Wifi access point simultaneously using a single wireless adapter?
I'm currently using pfSense as my home router and I want it to connect to multiple APs wirelessly. ...
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Setting up multiple wireless access points on same network
I'd like to add wireless to my network, and I need multiple access points to cover the whole area. I'd like to set them up so that there's only one "wireless network" that the clients see, and it ...
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Building a LAN on in the woods
A very long time ago, I had to build a LAN for a bunch of laptops, in a couple of tents. We ended up bringing a bunch of generators, stringing about 2 miles of networking and power cables, and ...
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MacOS clients sporadically disconnect from WPA Enterprise wireless network
We have a small office with ~20 people, each using a MacBook, and optionally connecting with a mobile phone too. Previously we used usual Wi-Fi with a shared key, but recently I reconfigured it to WPA ...
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corporate network: wireless vs wired
Our office is getting a serious make over and we are looking into updating our network infrastructure.
My idea was to just update our current cat5e cables to cat6 but my boss (not an IT guy) doesn't ...
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WEP/WPA/WPA2 and wifi sniffing
I know that WEP traffic can be "sniffed" by any user of the WIFI.
I know that WPA/WPA2 traffic is encrypted using a different link key for each user, so they can't sniff traffic... unless they ...
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How can I split my personal network (with WIFI) from my office network?
I work from my home home office and have a VPN router to my company. I share the same network for my personal and office use. I have a WiFi Access Point, I don't want access to any of my company ...
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Why would you use EAP-TTLS instead of PEAP?
As I understood EAP-TTLS and PEAP share same level of security when implemented in wireless networks. Both only provide server side authentication via certificate.
The drawback of EAP-TTLS can be ...
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Wireless link frequency choice (900Mhz vs 5.8Ghz) for 2-3km distance
I have recently been contracted by a client of mine to facilitate the wireless communication of his "home" offices and a secondary site.
The primary site is the top two floors of a 5-story office ...
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Beginners questions on how RADIUS and WiFi authentication works
I am a network admin at a high school in South Africa, running on a Microsoft network. We have approximately 150 PCs around the campus, of which at least 130 are wired to the network. The remaining ...
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How do you troubleshoot wireless woes?
Sometimes I have to troubleshoot machines on my LAN which have flaky wireless connections without any seemingly logical reason. Contrary to "normal" network connections in most cases I don't know ...
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What to filter when providing very limited open WiFi to a small conference or meeting?
Executive Summary
The basic question is: if you have a very limited bandwidth WiFi to provide Internet for a small meeting of only a day or two, how do you set the filters on the router to avoid one ...
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arp-requests cannot be seen by specific nodes
I create an open ad-hoc wlan by using iwconfig (I have the same issue with wpa_supplicant as well). there are 4 nodes on the network as seen on the figure below. The nodes run ubuntu 12.04 and debian ...
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How do captive portal network connections work?
Internet access at hotels, airports cafes is often gated by a captive portal which forces you to a particular web page on first use, for example a payment page or some page to accept a terms of ...
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Connecting two laptops through wireless adapters without wireless router
I want to connect two laptops through their wireless network adapters. I dont want to use any wireless router or access point. How can I do that. Both are running windows xp, where one has sp2 and ...
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Windows Server 2012 R2 DataCenter The request to list features available on the specified server failed
I am trying to add the Wireless LAN Service to my server but I first had to restart it because it installed some updates a while ago. After the restart it came up with the following error:
The ...
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WEP or WPA what should I use for my WiFi networks connection
Which protocol should I use and why?
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Security considerations of WPA versus WPA2?
As we replacing our existing WEP infrastructure across multiple offices, we are weighing the value of upgrading to WPA versus WPA2 (both PSK). We have several different types of devices that do not ...
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Wireless Backhaul - How to plan and test Point-to-Point feasability in potential antenna locations?
Our organization has begun to seriously consider replacing many of our interconnects with wireless backhauls, meshes or generic point-to-point links as the situation warrants.
Our current method of ...
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VLAN for WiFi traffic separation (new to VLANing)
I run a school network with switches in different departments. All is routed through to a central switch to access the servers.
I would like to install WiFi access points in the different departments ...
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Why my laptop sends ARP request to itself?
I have just started to learn about protocols. While studying the packets in wireshark, I came across a ARP request sent by my machine to my own IP. Here is the details of the packet :
No. Time ...
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Industry standard for minimum Wifi signal strength?
Is there an industry standard for how strong a Wifi signal needs to be in order to have a reliable connection? For example, maybe Wifi endpoints are designed to the specification that they connect ...
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Questions about overlapping wifi access points
I have a few questions about wifi.
Say we have a small campus with a set of wifi access points in most buildings, one each for channels 1, 6, and 11. It's not exactly that clean, but that's the ...
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Wireless Signal Strength + Performance
We have two access points on the shop floor. One of the AP's is not performing correctly with erratic signal strength and connectivity. Are there any open source tools available to measure performance ...
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Configuring WPA2-Enterprise with Freeradius
I'm trying to set up an authenticated wifi network with Freeradius. I've managed to get things working using self-signed certs etc.
The problem is Windows clients need to uncheck the "Automatically ...
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What is the reason CSMA/CD can't be used on a wireless network? [closed]
I'm new to wireless networking and wondering why the same Collision Detection mechanisms used for Ethernet can't be applied to WiFi. I think I'm starting to understand, but not sure if I've got it:
...
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Cannot get Motorola MC3190 to associate with WiFi access point
Using the Wireless Fusion management tools for the Symbol / Motorola MC3190, we cannot get the handheld to associate to the WiFi access point. Using the Find WLANs feature in the Fusion software, we ...
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Load testing wireless LANs
Anyone have any suggestions for methods of load-testing wireless networks for enterprise network deployments?
We've got a wide array of different wireless worst-case scenarios to support.
rooms ...