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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wireless between 2 buildings

I am setting up a wireless LAN between two buildings -- one with Internet and one without. The distance between the buildings is about 900 feet. This goes across a 4 lane street and up/down a hill. ...
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3answers
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802.1x automatically validate certificate in windows clients

We're deploying a wireless networking using Windows Server 2008 NAC as a RADIUS server. When Windows XP or 7 clients connect they initally fail to connect. In order to enable the client to connect we ...
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2answers
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How to achieve automatic roaming between two Cisco Aironet access points?

I have two Cisco Aironet 1141 access points covering an office; the access points are configured identically (each of them with two SIDs) and are fully working; they are standalone access points, not ...
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3answers
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Is there any open source solution for controlling multiple Access Points from a central server?

This question stems from an answer to one of my previous questions. In that answer, Oskar Duveborn says the following: Most likely there are some open source alternatives perhaps with custom ...
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3answers
893 views

Corporate Wireless policies

Our corporate laptops are restricted to only allow internet access through our proxy (connection profile in Internet Explorer pushed through a GPO). On a remote/3rd party connection this is allowed by ...
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5answers
1k views

Wireless health risks: any proof of it being a threat? Do you take it into account?

The Internet is full of "Tin foil hat" kind of people who would not dare to use a wireless setup, but as the amount of wireless networks grows, I am interested in good and objective case studies and ...
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10answers
1k views

Very strange home router problem [closed]

For a long time now I've had a very strange problem with my wi-fi network at home. I have a BT Voyager 2100 ADSL modem and an iMac, ageing PowerBook and a PC that connect to it wirelessly. The problem ...
5
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2answers
6k views

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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4answers
1k views

Why do some Wireless Access Points cost so much more than others?

Here are three different Wireless Access Points with similar specs: $875 CISCO AIR-AP1252AG-A-K9 Wireless Access Point $150 NETGEAR WNAP210-100NAS Prosafe Wireless Access Point $49 TP-LINK TL-...
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4answers
986 views

Does anyone use DD-WRT/OpenWRT etc. at their office? [closed]

Does anyone use any of the third party router/AP firmwares (DD-WRT, OpenWRT, Tomato, etc.) in an office environment? How many users does it handle well? How long have you been using it? I understand ...
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4answers
9k views

Is wireless wake on lan possible?

I don't really have much to add to the question in the title.. Is it possible to wake a computer via a wireless network card? (Assuming that a wireless card doesn't consume enough power to make ...
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1answer
13k views

Adjacent channel versus co-channel interference

What is the difference between the two in terms of affecting signal strength or performance? Where I work, everything is on channel 1 6 and 11 for the 2.4GHz spectrum and I've been told that co-...
5
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2answers
251 views

Advise on a 240,000 sqft outdoor wireless network

I'm looking for an idea of what qualities to look for in the equipment for a wireless network that covers the entire area of an outdoor arena. The area is rectangular-ish in shape. 400ft wide and ...
5
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9answers
14k views

I need to setup a Guest wi-fi SSID so customers/clients can connect to the internet, what's the best way to do that?

What are the best options out there to be able to provide a guest wireless internet access so they can't see the rest of devices in LAN?, what's the best and also cost effective appliance that will do ...
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1answer
3k views

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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8answers
379 views

Wireless Hotspot Security

We have concerns about our staff using wireless hotspots to connect to our LAN. We use a VPN to connect to our network and they can then transfer data using a proprietary application. What little web ...
5
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4answers
299 views

What are possible reasons for wireless network issues?

I work with a startup incubator, who is regularly experiencing issues with their internet connection. Are there any red flags with the current setup that it inadequate? 100/50MBPS broadband ...
5
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2answers
140 views

Is there a piece of equipment that connects to a wireless network and provides ethernet ports to clients?

Is there a piece of equipment that connects to a wireless network and provides ethernet ports to clients? I have an existing wireless network, and I would like to plug a bunch of machines into a ...
5
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4answers
292 views

Purposely setting poor Signal Quality on my own WiFi

I would like to measure how different applications will perform under poor Signal Quality. Where Signal Quality is measured by: Signal / Noise * SNR = Signal Quality -80 / -90 * 10 = 8.9% ...
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2answers
2k views

Which SNMP variables to diagnose/characterise wifi congestion?

I'm preparing for a load test of a classroom wifi system. The pupils all turn on their laptops at the start of the lesson, which launches the web browser and then they start the lesson - which ...
5
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2answers
484 views

Best security practice for small networks - wifi, lan,

We regularly setup small networks for clients in different locations to allow them to work on different products now the question what should be the best security practice. Currently we have a wifi ...
5
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5answers
2k views

Solution to wirelessly project tablet desktop? [closed]

I’m trying to find a device that would allow a windows 7 client to wirelessly connect and display their screen to a projector while still connected to the wireless network. The idea is to allow a ...
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2answers
1k views

Creating a network link between 2 very close buildings

I have a charity who have two adjacent medium sized modern detached houses (in the UK): the buildings stand next to each other and are less than 5 metres apart. They have DSL connected to a single ...
5
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2answers
7k views

Should I be on different Channels for this WiFi network?

I'm not sure if our 3 routers, in our wifi network, should be on separate channels (so each can maximize the bandwidth per channel) ? Our office is networked via WiFi. It is in the shape of a 'L' ...
5
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2answers
269 views

need help upgrading small business wifi network

Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to ...
5
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3answers
568 views

How to get decent WiFi despite a virtual Faraday cage

One of my clients is the local branch of an international airline. They have a small office in the secured area behind the ticket counters, and timeshare space at the ticket counter. I need to add a ...
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3answers
16k views

Meraki wireless access point disconnects clients

We have a Meraki MR16 Cloud Managed AP and it disconnects certain clients. The clients with Intel wireless cards work without any disconnects. The Meraki reports the follow in its event log: Sep 4 ...
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2answers
416 views

Using 4 wifi channels rather than 3

I have a wifi deployment with about 60 access points, currently limited to channels 1,6, and 11. This is a college campus, and the residence halls can get quite noisy, from an rf perspective. We ...
5
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3answers
861 views

Aironet 1200's Auto-Channel Feature: When should it be used?

In our building we have around 25 1200 series Aironets, with a bit of overlap in some areas. Up until this point, we have had them deployed in alternating 1/6/11 channels, but we are wondering if we ...
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4answers
2k views

Troubleshooting wireless connection problem / site survey?

I just started in the IT department of a small company (200 users) and it's clear that one of the main problems that is driving everyone crazy is the spotty nature of the wireless connectivity ...
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6answers
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Networking problems in VMWare with wireless bridge

Barebone data: virtualization: VMWare Workstation 6.5 (latest) Host: Windows Server 2008 x64 Guest: Windows Server 2008 x86 Host network adapter: Ethernet (see comment) Host network adapter: ...
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3answers
5k views

set tap0 using virt-manager for bridged wireless

After 3 days I finally have kvm guests working on the network via wireless (link below - thanks!): My network is 192.168.1.0/24 on the host: sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward" ...
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8answers
2k views

What's better than wifi to connect servers wirelessly (ethernet-like latency)?

I need to connect some servers wirelessly and would like to know what other technologies (than Wifi) exist to get an idea of the possibilities. It would nice to know the pros/cons, limitations. ...
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6answers
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Is WEP used in conjunction with a wireless access list adequate security?

I use a Netgear wireless router, with various wireless devices connecting to it. One of my wireless devices doesn't support WPA2 security, so I had to downgrade the security on the router to WEP. We ...
4
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4answers
421 views

Troubleshooting wireless network in a 4000 square feet office

I work for a non-profit organization in a 4000 sf office with 30 staff. All laptops are connected to the network wirelessly. We have one switch (TP-Link TL-SF1008D Ethernet Switch) and three routers ...
4
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7answers
24k views

Can a wireless router be used as a range extender?

Is it possible to setup a second wireless router at the edge of another wireless routers range limit, and extend the networks range? Edit: It will be used in a home environment, so money and space ...
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5answers
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Have Ubuntu auto-connect to wireless AP without logging in

We have an ubuntu box set up to do some monitoring but due to the placement are unable to run CAT5 to the box itself. I have an Atheros PCI card that works great as long as someone is logged into ...
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4answers
2k views

Troubleshoot dropped wireless connections

I was recently hired in the IT department of a small company (~180 users) and one of the issues that people have been complaining about is having their wi-fi connections drop during meetings. The ...
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3answers
13k views

Adding a second wireless router to my network

I have Verizon DSL service that came with a westell 7500 wireless router, but the wireless does not cover a big enough area. I also own a linksys wireless router which I would like to place about 75 ...
4
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3answers
10k views

How to automate DNS server reconfiguration for TCP/IPv4 and TCP/IPv6 in Windows 7?

I need to switch Internet Protocol Version 4 (TCP/IPv4) and Internet Protocol Version 6 (TCP/IPv6) settings for DNS server configuration from "Obtain DNS server address automatically" to hard coded ...
4
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6answers
15k views

Free Wi-Fi hotspot management software for school

I'm working in a high school and I'd like to put in place a public Wi-Fi network with a captive portal that asks for authentication but also keeps track of user information, like the amount of data ...
4
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3answers
238 views

How strict is line of sight?

The college where I work is wanting to expand our network connection out to the field house building, located about 1/2 to 3/4 mile away from the rest of campus. I'm looking at one of these as a ...
4
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4answers
2k views

Will MAC filtering increase Wifi security?

I've always thought that you should enable MAC filtering to increase Wifi security (in addition to using WPA2). Now I've found this article (Wireless LAN security hall of shame) that says MAC ...
4
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2answers
218 views

How should I secure a corporate wireless network?

We are implementing a new WiFi network at my work, and I am trying to think through a design of the security for the network. Use case 1: guests. We will have a captive portal setup, guests will ...
4
votes
3answers
9k views

AFP painfully slow

Copying a file using AFP took 40 minutes but using scp it only took 7 mins. Why is AFP so slow? My setup: D-Link DIR-300 wifi router iMac with Snow-Leopard serves AFP Macbook with Leopard is the ...
4
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6answers
4k views

Wireless to Wireless Transfer Slow on a Linksys WRT54GL

The Situation: When I try to transfer a file from one computer to another that are both connected via wireless on a WRT54GL (in a office) with dd-wrt firmware I often get bad speeds. In generally ...
4
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3answers
110 views

Wireless LAN interference

I have set up at wireless LAN network in a small office, connected to a ADSL connection. Using a wired connection between a computer and the router, I get the expected ~8.5 Mbps down, and ~1 Mbps up. ...
4
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1answer
496 views

How to define a “challenging RF environment”?

I'm shopping around for some new Wi-Fi routers, and the Cisco Aironets look pretty good. There are some differentiating features between the models; in particular, the 1260 is designed for "...
4
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2answers
26k views

Windows 7 - wireless connection sharing [closed]

I am trying to share my mobile broadband Internet connection with other machines via Wi-Fi and am running Windows 7. Users are able to connect to my machine, but they are not able to obtain an ...
4
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1answer
109 views

How to dynamically find the name and type of interfaces attached to a system

I have a use case where I need to dynamically configure some files which includes the name of the interfaces present in system say eth0 , wlan0 . However when I change the system sometimes its changed ...