Re: IAS server and access points



=?Utf-8?B?R2FyeUFTRw==?= <GaryASG@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
news:38D55B5E-83D8-4DCD-BC9B-7E3279686C6F@xxxxxxxxxxxxx:

Thanks for the reply
I have an update which definitely blames the AP's.

I have actually been in touch with Netgear tech support on this
current problem. I used Ethereal to look at packets arriving on the
IAS server from the access points and Ethereal marked the packets as
Malformed. The problem is I cannot determine what exactly is malformed
about them. I have sent the logs to Netgear and made steps to return
the AP's as not fit for purpose.

What is most frustrating is that this has happened with so many
manufacturers. Although I cannot confirm the previous AP's had the
same problem they just had the same effect.

I do have the validate server certificate selected. I use GP to push
out the wireless policy to all client pc's in a specific group.

"James McIllece [MS]" wrote:

=?Utf-8?B?R2FyeUFTRw==?= <GaryASG@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
news:5C745148-BAF6-4650-9DA8-C2B63820C71F@xxxxxxxxxxxxx:

I am having a problem with some access points that are 802.1x
capable. I use PEAP and passwords to authenticate wireless clients.
Some access points work fine with IAS others can only authenticate
the users as they login they do not authenticate the computers
before login. This prevents our login script from running. The
computers can authenticate once the user is logged in but this is
too late. I get an occassional message on my IAS server that says
"A RADIUS message with the Code field set to 2, which is not valid,
was received on port 1812 from RADIUS client "access point name."
This also appears with code field 4 & 5. I frequently get no
message at all. This has happened with 3com, netgear, dlink and
linksys access points. It also varies with firmware on some accesss
points i.e. old firmware works new firmware does not. Is this just
a problem with the access points or could it be my network/IAS
setup? Any help gratefully received

If the access points are sending RADIUS messages with invalid values
for the code field, there is nothing wrong with your setup -- as you
have noted, IAS will reject messages with invalid values.

Without implying that the APs you are using are not compliant with
the RADIUS protocol/RFC's, I can say that whatever APs you're using
must be compliant with the RADIUS protocol and RFCs, and if you're
having problems with APs you should definitely contact the AP vendor.

As for logon scripts running, do you have all clients configured to
validate the IAS server? (Can't remember the name of this control on
the client, I think it is probably "Validate server certificate")

--
James McIllece, Microsoft

Please do not send email directly to this alias. This is my online
account name for newsgroup participation only.

This posting is provided "AS IS" with no warranties, and confers no
rights.



I've pinged the product team about the logon/script issue, if I receive a
response I will let you know.

Thanks --

--
James McIllece, Microsoft

Please do not send email directly to this alias. This is my online account
name for newsgroup participation only.

This posting is provided "AS IS" with no warranties, and confers no rights.
.



Relevant Pages

  • Re: IAS server and access points
    ... I have actually been in touch with Netgear tech support on this ... IAS server from the access points and Ethereal marked the packets as ... out the wireless policy to all client pc's in a specific group. ... "A RADIUS message with the Code field set to 2, which is not valid, ...
    (microsoft.public.internet.radius)
  • Re: IAS server and access points
    ... logs to Netgear and made steps to return the AP's as not fit for purpose. ... wireless policy to all client pc's in a specific group. ... I get an occassional message on my IAS server that says "A RADIUS ...
    (microsoft.public.internet.radius)
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