All Questions
40 questions
1
vote
1
answer
6k
views
WIFi Authentication with Windows Active Directory [closed]
What would you recommend for scenario.
Office with 100 employees multiple device platforms(Apple , Windows and Android).
Existing Windows Active Directory on Windows 2008 but not all devices use this ...
2
votes
2
answers
4k
views
If network card supports 802.11n, does it mean it supports 5ghz band? [closed]
I've gotten a new router that broadcasts 2.4ghz and 5ghz bands. But my desktop could only see the 2.4ghz connection.
I read from a website that as long as my network adapter supports 802.11a or 802....
- 321
0
votes
1
answer
697
views
802.1.x GPO configuration with restriction by computers and users
802.1.x configuration possible using Machine Policy GPO. So, typical scenario is creating security group for computers and applying our policy with 802.1.x to this group. After this all machines from ...
- 109
2
votes
3
answers
1k
views
Wireless network infrastructure for an office with 40 employees
In my company we're facing connectivity problems due to our not very professional network infrastructure. We're growing now, and we expect to be 40 people at the office by the end of the year.
I'm ...
3
votes
1
answer
11k
views
Configure FreeRADIUS with Active Driectory allow specific group of users to authenticate
In order to authenticate WiFi clients I use a FreeRADIUS server configured to check for user credentials in an Active Directory environment. Currently all users with a valid account are authenticated ...
- 51
0
votes
1
answer
269
views
Theoretical Wi-Fi decay
Is there a way to (theoretically at least) calculate the decay on bandwith of a Wifi related to the streght signal? For example, I know that I can theoretically expect 54Mbps of a 802.11g at 100%, ...
- 235
0
votes
0
answers
803
views
Is there any way by which I can capture the wifi probe requests without using monitor mode?
For some reason, keeping the wifi interface in monitor mode on my machine is crashing it(its a raspberry pi, I'm assuming its crashing because of the amount of traffic being intercepted, but lets not ...
1
vote
1
answer
212
views
What network/device info can be obtained from an iOS device connected to an 802.11u-enabled access point?
In order to perform some device security validations, I need canonical references to what device/hardware/network information can be obtained from an iOS device connected to an 802.11u-enabled access ...
- 119
1
vote
3
answers
6k
views
How to limit user's access to a specific NAS?
I'm new to RADIUS and I have just set up a very basic FreeRADIUS server for 802.1x (WPA). I use EAP, MySQL as backend with daloRADIUS as webGUI (for user management, mainly).
I got two WiFi networks, ...
- 414
3
votes
1
answer
8k
views
OpenVPN to host tap device having very large MTU
Question
What is the minimum set of server and client configuration directives that I need in order to satisfy the following conditions?
Virtual layer 2 ethernet network that will not be bridged ...
- 958
0
votes
3
answers
2k
views
How to prevent users from connecting directly to the switch, where the Access point is connected?
I'm about to setup a large wireless network, at a dorm.
The hardware I'm using is going to be:
HP Procurve E2520-24G-PoE (J9299A)
Cisco Aironet 2602i Autonomous Access Point
Since the outlets at the ...
- 218
-1
votes
1
answer
2k
views
Reason for four frame types in Wireless LAN [closed]
So I was asked this question in an interview as a junior network specialist the other day:
Give A reason why there is only one frame type in a wired LAN but four
frame types in a wireless LAN.
...
- 9
0
votes
1
answer
3k
views
How to calculate bandwidth limits per user on WiFi network
A typical 802.11g access point can provide around 25 Mbps of bandwidth. How is the bandwidth shared among the users?
Furthermore, how many users can be served by a single access point using 802.11g ...
- 135
22
votes
4
answers
2k
views
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 ...
- 331
8
votes
1
answer
90k
views
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:
...
- 99
7
votes
4
answers
2k
views
Wireless technology - which is better: more single radio APs or less dual radio APs?
We are currently talking to vendors of wireless solutions for a wireless deployment in a university campus with some 5000 students.
One vendor is offering us a Cisco solution with a WLC 5508 ...
- 109
2
votes
0
answers
5k
views
Single Sign On 802.1x Wireless - saying “Connecting to <SSID>”, hangs for 10 seconds, fails with “Unable to connect to <SSID>, Logging on…”.
We are implementing WiFi on Windows 7 machines in our corporate environment. Machines should be able to log into the domain by WiFi as the Machine (Pre-Logon), and as the User (Post-Logon). We have ...
- 167
5
votes
3
answers
2k
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 ...
- 173
1
vote
1
answer
2k
views
Enterprise Wireless Authentication without Active Directory
We are in the process of redoing our wireless access network and would like to know if there is any method to get Windows clients/users access to the network using 802.1x WITHOUT having an Active ...
- 686
4
votes
3
answers
166
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. ...
- 145
7
votes
3
answers
40k
views
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 ...
- 746
3
votes
1
answer
3k
views
How do mixed wireless clients (b/g/n) effect total throughput of an access point?
Say you are planning a network based around access points that support the full range of 802.11 protocols on 2.4Ghz(b/g/n). How will a mixed set of clients effect the total throughput possible through ...
- 133
3
votes
1
answer
4k
views
Portable, battery-powered, wireless access point, ethernet adapter [closed]
I am in need of an adapter that will convert an ethernet port into a wireless access point. I have found a handful of devices, but I'm unable to find a device that is battery powered.
Does a self-...
- 151
2
votes
1
answer
3k
views
Wireless Profile via Group Policy - Specific Trusted Root not Listed?
So I am trying to use Group Policy to configure the wireless settings on a bunch of laptops. We are using a third party cert that isn't showing up as an option in the list of Trusted Root ...
- 937
1
vote
2
answers
2k
views
Can I use wireless 802.1x authentication on windows for client machines that are not in the domain?
First off, I am not a sysadmin, so feel free to correct any mistakes in my question.
We have a Windows Server 2008 R2 domain with 802.1X authenticated wireless access for laptops with Windows 7 ...
- 125
0
votes
1
answer
519
views
Wireless setup for my Aironet 1260 [closed]
I have a new Aironet 1260. I've read that I shouldn't setup WEP for wireless. Any recommendations on how this should be configured? Should I setup 802.1X? I assume I need to setup a radius server. ...
- 169
3
votes
2
answers
2k
views
Realistic benchmarks of 802.11n / WiFi N performance?
I need to be able to connect a computer to our network with realistic speeds to the rest of the network of 30+ Mbps (as measured by something like iperf). Running a wire is not an option here, and the ...
- 321
5
votes
2
answers
475
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 ...
- 13.1k
2
votes
2
answers
164
views
Tool to troubleshoot wireless connections
Having a lot of issues with a wireless network with multiple APs sharing the same SSID. I have a tool I use on my android phone (wifianalyzer) that is helpful, but I need a more comprehensive set of ...
- 739
4
votes
2
answers
389
views
How can I offer 2.4 ghz wi-fi in a building with strong interference?
I have a few access points on one floor of a high-rise building. They support both 2.4 ghz and 5ghz.
When I used 2.4 ghz, the channel management features did not seem to work and we experienced ...
- 1,286
1
vote
1
answer
437
views
HP/3com 9552 802.11n AP won't let some clients connect
I splurged and bought an HP/3com 9552 802.11a/b/g/n access point. Like most enterprise-grade access points, it has very fine-grained configuration options.
I'm pretty sure I've configured it ...
- 2,532
2
votes
1
answer
289
views
Small office 802.11n router / access point that doesn't suck [closed]
I'm looking for a wireless n access point for a small office, about 9 people. I've been looking around, and it seems all the n series access points or routers are just terrible. Originally I was ...
- 436
3
votes
3
answers
2k
views
Why slow (500-4500ms) ping times to google.com over Wi-Fi?
I regularly get ping times (to google.com) on my netbook over wireless (802.11) of:
500-4500ms for about half the time
100-150ms for the rest of the time.
It seems to switch back and forth on the ...
- 1,075
1
vote
2
answers
241
views
Is browser based wireless authentication secure?
Our wireless network previously used a preshared WPA/WPA2 key for guest access, which allows them access to the Internet. (Our employee access uses 802.1x authentication). We just had a wireless ...
- 655
1
vote
2
answers
1k
views
8021x wireless clients auto connect prior to user login
I am using a 2008 r2 dc that also performs Radius (NPS), I also have a 2008 r2 certificate authority which is giving out certificates.
The computers are getting the certificate and when a user logs ...
- 928
8
votes
3
answers
3k
views
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 ...
- 12.1k
0
votes
1
answer
735
views
802.1x authentication over wireless not wired
We have a wireless network that authenticates via 802.1x free-radius server. We have told the wireless network to authenticate accordingly and it works. However when we have a wired network we have ...
- 506
0
votes
2
answers
2k
views
Unable to specify alterntive credentials using 802.1x wireless connections on Windows 7
Using Windows 7 I am unable to connect to the wireless network using 802.1x settings. I have configured it exactly as in Vista using certificates and checking the use alternative credentials check box ...
- 2,186
42
votes
5
answers
90k
views
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)
- 4,999
0
votes
2
answers
2k
views
Can anyone point me at an 802.11n range extender?
The closest google's getting me is this question here, but the answer (presumably "none, run a wire") is behind a paywall.
- 101