Re: [WIRELESS-LAN] Macintosh- Ongoing Connectivity Issues

2009-01-23 Thread Ben Thompson
Hi

We have a mixed network with a mixture of Cisco fat AP's and Aruba
thin AP's and we have found that some Apple Macs are having problems
connecting to the Aruba setup. It seems that the authentication
periodically fails and I see error messages like these from RADIUS :-

Auth fail logs from FreeRADIUS :-

Thu Jan 22 16:59:44 2009 : Error: TLS Alert write:fatal:bad record mac 
Thu Jan 22 16:59:44 2009 : Error: rlm_eap: SSL error error:1408F119:SSL 
routines:SSL3_GET_RECORD:decryption failed or bad record mac
Thu Jan 22 16:59:44 2009 : Error: SSL: SSL_read failed in a system call (-1), 
TLS session fails.


Auth fail reason from IAS :-

Reason-Code = 260
Reason = The message or signature supplied for verification has been altered 


Has anyone else seen anything similar to this?

Thanks

-- 

Ben Thompson

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Re: [WIRELESS-LAN] 802.1x- Who's doing it and how far along

2006-01-20 Thread Ben Thompson
On Thu, 2006-01-19 at 08:55 -0500, Lee Badman wrote:
 Knowing that this can be a large topic, will try to keep the questions simple 
 for all:
 
 - How many of you are using 802.1x as your primary production wireless 
 security mechanism?
 - EAP type(s)?
 - RADIUS type?
 - Has anybody started down the 802.1x road, then bailed out with no intention 
 of going back to it? Why?

Yes, we do 802.1x with PEAP or TTLS. RADIUS server is FreeRADIUS and
AP's are Cisco or Foundry. We also participate in eduroam.

Cheers
 
Ben

-- 

Ben Thompson
Network Services Specialist
Computing Service
University of York
Heslington
York YO10 5DD
UK

Tel. 01904 433230
Fax. 01904 433740

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Re: [WIRELESS-LAN] Multiple VLANs configuration

2005-12-20 Thread Ben Thompson
 At 08:04 PM 12/15/2005, you wrote:
 While trying to set the Windows XP client to authenticate via 802.1x the
 authentication is successful. However after disconnecting from the network
 and trying to get back on, Windows XP does not ask for the user credentials
 and uses a cached entry to connect again.
 
 Where would you set the host to ask for credentials every time a connection
 is initiated?

Hi

If your RADIUS server supports it could you configure EAP-TTLS and
install the SecureW2 client on your XP boxes? 
http://www.securew2.com/uk/index.htm
The SecureW2 client is more configurable and I think you can tell it to
ask you for the password every time as one or the options.

Cheers

Ben

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Re: [WIRELESS-LAN] Dectecting ad-hoc networks in dorms

2005-10-05 Thread Ben Thompson
On Tue, 2005-10-04 at 19:20 -0400, Phil Trivilino wrote:
 No one has mentioned it yet so I will, since we use this device and it
 does an excellent job.  Fluke Networks Wireless Network Analyzer.  It
 is expensive but it does the job - reliably.  We use it for all
 aspects of our wireless network - from surveys to wireless
 troubleshooting and packet captures.  Almost everything you could
 possibly get for troubleshooting a wired network.
 
 Phil Trivilino
 Manager of Network Infrastructure
 St. Lawrence University
 
 Dan Schneider (Network Administrator) wrote: 
  As we put in Wireless Access Points, we are discovering problems 
  with student ad-hoc networks, wireless printers, etc... 
 
  We are looking into some type of very sensitive wireless analyzer
  equipment that 
  will be used to go out to the dorms, walk the halls, and pinpoint 
  the rooms the ad-hoc, etc. signals are coming from. 
 
  Anyone have suggestions on tools you are successfully using for this
  purpose? 

Hi

I use a YellowJacket B/G from Berkeley Varitronics Systems :-

http://www.bvsystems.com/Products/WLAN/YJ802.11bg/YJ802.11bg.htm

This device is really useful for locating rogue devices as it has an
optional directional antenna and a signal strength meter with a constant
beeping sound which gets more high pitched the closer you get to the
source.

It can also track down movement detectors and video senders and anything
else you can think of using the spectrum analyser display.

Regards

Ben Thompson

-- 

Ben Thompson
Network Services Specialist
Computing Service
University of York
Heslington
York YO10 5DD

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