a) pick your certificate's CA from the list in the PEAP setup b) enter your certificate's CommonName in the server list
The user does not have to download anything. Doing both of these, though, is extremely important to gain the highest level of security and prevent the possibility of session hijacking.
In our environment, we purchased a certificate from Verisign and used a bogus hostname of 8021x.utdallas.edu. In our instructions, we tell the users to check the "Secure Server CA" box *and* enter "8021x.utdallas.edu" into the server list field. The only thing the client has to obtain to get configured is the instructions.
I'm not quite sure what your Cisco rep was talking about, --Mike On Apr 4, 2007, at 12:39 PM, ktaillon wrote:
One of the things that I didn't point out is we are running the new LWAPP AP's and controller setup. After I told Cisco about the one-way cert he said this is ok to run in this setup because the peap tunnel that is created from the client to the AP and to the ACS/Controller could not be interfered with.Not like a web server cert that could be hijacked.If I were to install a Cert(Verisign, GTE.....)on the ACS that is on the XPlist of trusted names, can the client just check off that name without having to go to a web server to download and install the cert?I'm just trying to keep the client setup as simple as possible but not in away that lowers security. Ken -----Original Message----- From: Michael Griego [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 04, 2007 11:27 AM To: [email protected] Subject: Re: [WIRELESS-LAN] 802.1x With A One-Way CertificateJust be aware that not validating the certificate opens you up to fairly easy session hijacking attacks since anyone can come up with a cert and get your clients to connect to their APs instead of yours (since the client is not checking cert validity)... The attacker would then have access to the data stream as it would appear on the LAN, so you potentially lose a lot ofthe security benefit. --Mike On Apr 4, 2007, at 10:19 AM, Rick Coloccia wrote:Yes. We aren't using the wpa-tkip with acs, but we do use ias(windows) for radius, we have our clients uncheck the 'Validate ServerCertificate' option and away they go. http://www.geneseo.edu/CMS/display.php?page=5200&dpt=cit http://www.geneseo.edu/CMS/display.php?page=5198&dpt=cit http://www.geneseo.edu/CMS/display.php?page=5199&dpt=cit We like how it works. We run 4 4404's with 350 1242ag access points. -Rick ktaillon wrote:We are trying to implement a WPA/TKIP Wireless authentication. We areusing ACS Solution Engine which backs into AD for Authentication. We are currectly using WEP. We are looking for the least amount of client setup to make this change. Cisco has told us to use the PEAP MSCHAPv2 connection with a one-way cert, the cert or CA would only be installed on the ACSserver and the client would uncheck the 'Validate Server Certificate'under the protected EAP properties. They also told us that the PEAP tunnel that is created would be comparable to having a cert on theclient. This seems to be working fine in our tests and is very simplesetup for the clients. Are any of you running your connection setup this way? Ken Taillon Network Support Specialist Information Technology Services Wesleyan University 860-685-5657 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http:// www.educause.edu/groups/.-- Rick Coloccia, Jr. Network Manager State University of NY College at Geneseo 1 College Circle, 119 South Hall Geneseo, NY 14454 V: 585-245-5577 F: 585-245-5579 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http:// www.educause.edu/groups/.**********Participation and subscription information for this EDUCAUSE ConstituentGroup discussion list can be found at http://www.educause.edu/groups/. **********Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http:// www.educause.edu/groups/.
********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
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