TL;DR: Everything Ryan said applies to PEAP too. We have extensive experience on the PEAP front. We used to run an InCommon certificate, and devices prompted to verify. (Windows, Macs, and iPhones use a different store to verify 802.1X certs, so no cert chain is trusted out of the box - there is no cert you could provide to make them happy.) So we migrated to a long-validity private CA that our CISO manipulates using openssl(1), and we distribute the CA using eduroam CAT. All is well in the world.
-- Hunter Fuller (they) Router Jockey VBH Annex B-5 +1 256 824 5331 Office of Information Technology The University of Alabama in Huntsville Network Engineering On Wed, May 27, 2020 at 1:53 PM Philippe Hanset <0000005cd62f91b7-dmarc-requ...@listserv.educause.edu> wrote: > > Somewhat related to this thread, if you are planning to switch to EAP-TLS, > please consider using ECC (Elliptic Curve Cryptography, small certs) > Certificates. > They make EAP-TLS much more compatible when authentications cross many > network devices ( related MTU size issues), especially if you do not control > those devices. > We have had many failed authentications on eduroam with EAP-TLS (using 2048 > bits certs) due to MTU mismatch on network devices across the entire > federation. > > Best, > > Philippe > > Philippe Hanset, CEO > www.anyroam.net > Operator of eduroam-US > +1 (865) 236-0770 > > On May 27, 2020, at 8:16 AM, Turner, Ryan H <rhtur...@email.unc.edu> wrote: > > My guidance is for properly onboarded TLS devices. It doesn’t apply to PEAL > or anything else. Actually, that does bring a wrinkle into my previous > email. If PEAP and TLS both exist, I am going to guess there will be more > prompts or issues with a private CA (perhaps) > > Ryan Turner > Head of Networking, ITS > The University of North Carolina at Chapel Hill > +1 919 274 7926 Mobile > +1 919 445 0113 Office > > On May 26, 2020, at 8:21 PM, Hurt,Trenton W. <trent.h...@louisville.edu> > wrote: > > > I’m also doing unmanned eap peap (yes I know all the security reasons against > this) if I don’t use public signed ca will byod devices be able to connect > via eap peap with that private cert? > > Trent Hurt > > University of Louisville > > ________________________________ > From: The EDUCAUSE Wireless Issues Community Group Listserv > <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Turner, Ryan H > <rhtur...@email.unc.edu> > Sent: Tuesday, May 26, 2020 8:10 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: Re: [WIRELESS-LAN] securew2 root ca radius server cert change > > > CAUTION: This email originated from outside of our organization. Do not click > links, open attachments, or respond unless you recognize the sender's email > address and know the contents are safe. > > You are likely totally hosed. In fact, you should consider abandoning public > CAs entirely when you re-do this. Through-out the years, I’ve counseled a > lot of schools about TLS deployments, and I cautioned strongly against using > public CAs for this exact reason. You have no control, and your CA can > totally hose you, as you can see. > > > > There is no way around this if the CA will not cooperate. You should talk > to your active directory folks. They should spin up a new offline private CA > root, then intermediary, then issue your RADIUS servers from the > intermediary. The expiration should be many years. > > > > OR, you can utilize SecureW2 and their online CA to generate RADIUS server > certificates. In any event, get off the public CAs. > > > > Ryan > > > > From: The EDUCAUSE Wireless Issues Community Group Listserv > <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Hurt,Trenton W. > Sent: Tuesday, May 26, 2020 5:36 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: [WIRELESS-LAN] securew2 root ca radius server cert change > > > > I have both eap peap and eap tls setup and working. My radius server cert is > going to expire soon. I have received new one from public ca. It works fine > for eap peap clients. But for my existing eap tls clients they all fail auth > when I switch to this new updated rad cert. I see that my public ca has > issued this new cert using different root ca then my old one ()the one that > is install/config on my securew2 app in the cloud. Securew2 has told me that > users will have to onboard again once I change the cert on clearpass and > update the cloud app since public ca changed root ca on cert chain. I asked > my public ca if they could reissue using the other root ca so my eap tls > clients will still work once I do the change. They have told me that > shouldn’t need reissue as the old root ca (one tls clients currently use) > because my new cert root ca is cross signed by the old root ca. They told me > that I should be able to use this new one but I still cant seem to get things > working correctly. Anyone who is using securew2 had issues like this with > root ca changing and clients forced to reonboard? Im not really pki person > so if there is some way I could chain these or something. Just looking for > way to update the rad cert on servers and not have to force all my onboard > clients to have to go thru that process once I make the change. > > > > > ********** > Replies to EDUCAUSE Community Group emails are sent to the entire community > list. If you want to reply only to the person who sent the message, copy and > paste their email address and forward the email reply. Additional > participation and subscription information can be found at > https://www.educause.edu/community > > ********** > Replies to EDUCAUSE Community Group emails are sent to the entire community > list. If you want to reply only to the person who sent the message, copy and > paste their email address and forward the email reply. Additional > participation and subscription information can be found at > https://www.educause.edu/community > > ********** > Replies to EDUCAUSE Community Group emails are sent to the entire community > list. If you want to reply only to the person who sent the message, copy and > paste their email address and forward the email reply. Additional > participation and subscription information can be found at > https://www.educause.edu/community > > ********** > Replies to EDUCAUSE Community Group emails are sent to the entire community > list. If you want to reply only to the person who sent the message, copy and > paste their email address and forward the email reply. Additional > participation and subscription information can be found at > https://www.educause.edu/community > > > > > > > > > ********** > Replies to EDUCAUSE Community Group emails are sent to the entire community > list. If you want to reply only to the person who sent the message, copy and > paste their email address and forward the email reply. Additional > participation and subscription information can be found at > https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community
