freeRadius / Unifi AP / EAP-TTLS ?

johnpoz

@furom said in freeRadius / Unifi AP / EAP-TTLS ?:

Shouldn't I get a password prompt too?

For why? But yeah you can add that if you want.. I think its completely pointless in such an auth setup... Your sending a cert signed by your own CA.. And this cert is only installed on your trusted devices.. Why would you want to have to put in a password as well?

How would anyone get these certs? How would they create their own cert that also matches up with a freerad user you created..

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom said in freeRadius / Unifi AP / EAP-TTLS ?:

Shouldn't I get a password prompt too?

For why? But yeah you can add that if you want.. I think its completely pointless in such an auth setup... Your sending a cert signed by your own CA.. And this cert is only installed on your trusted devices.. Why would you want to have to put in a password as well?

How would anyone get these certs? How would they create their own cert that also matches up with a freerad user you created..

I don't want it surely, but as it says "Password may be incorrect"...? I'm googling this not, or trying... Found out my nice ISP just revoked my old IP and gave me a new one... Strange...

johnpoz

@furom where is it saying that - and what are you putting the certs on exactly.. I do have a android tablet, just haven't gotten around to connecting it to this eap-tls network yet..

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom where is it saying that - and what are you putting the certs on exactly.. I do have a android tablet, just haven't gotten around to connecting it to this eap-tls network yet..

Correct, it is an old Android tablet running 7.1.1
I am using the "Install certificates" in "Advanced WLAN" menu. I then see them fine when connecting, or hm, trying

furom

@furom Found the issue. I made a mistake when creating the cert... So will redo it with ed25519 and hope it will go just a little better :)

johnpoz

@furom my android which is a lenovo P11 plus running Android 12 is bitching about connecting. It forces uses of a domain, I didn't setup a domain for these certs.. Guess going to have to redo for the android... maybe I will play with this this weekend.. But I only ever use this tablet for watching movies on the train to and from work.. So not going to put in much effort getting it to use eap-tls ;) I normally just connect it to my guest wifi anyway.

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom my android which is a lenovo P11 plus running Android 12 is bitching about connecting. It forces uses of a domain, I didn't setup a domain for these certs.. Guess going to have to redo for the android... maybe I will play with this this weekend.. But I only ever use this tablet for watching movies on the train to and from work.. So not going to put in much effort getting it to use eap-tls ;) I normally just connect it to my guest wifi anyway.

Got it. I read somewhere that for Android 11/12 you also need the chain/intermediate cert now. I'm far from havit that issue, perhaps I should upgrade, but my use-case is probably worse than yours...which sounded reasonable :) I'll take a break as well. If I do get it to work I'll post what I did. I found the radius.log in /var/log/ useful, it spits out some info at least

johnpoz

@furom do you have an iphone or ipad to test with.. Those work without any issue.. Also seems you can export the .p12 right from the cert manager - if using 23.01, or 23.05, not sure about CE versions. You can pick the encryption used, seems ios 16.5 will take the low setting, not the high or legacy setting.

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom do you have an iphone or ipad to test with.. Those work without any issue.. Also seems you can export the .p12 right from the cert manager - if using 23.05, not sure about CE versions. You can pick the encryption used, seems ios 16.5 will take the low setting, not the high or legacy setting.

Unfortunately I only have this tablet... But I do export .p12, bit get no option to set anything on it.. Right now battling "ERROR: (29) eap_tls: ERROR: (TLS) Alert read:fatal:certificate unknown", not sure why I get that, but will keep trying. I set CN to my username, and Altenative to FQDN, but guess that made it barf... Will try to read more what it expect

furom

@furom Ugh. I have to take a break for tonight... When I do what I find most logical, and selects the CA, it hides the user cert, so something is seriously not right. Will have another go tomorrow - it will work, it has before... :) Till then, have a good one!

johnpoz

@furom well got mine connected finally.. stupid case sensitive.. I setup a new cert for it using tablet.home.arpa, and had Tablet.home.arpa vs tablet.home.arpa

Now that everything exactly machines my tablet is connected..

Just use the cert manager to export the p12 using the high setting..

May 19 14:06:56 	radiusd 	84994 	(15) Login OK: [tablet.home.arpa/<via Auth-Type = eap>] (from client uap-pro port 0 cli 9A-48-F6-57-CE-BB) 192.168.2.2 Auth-Type: eap

furom

@johnpoz Nice job! I'm still not that lucky. I set bothe CN and Alt Name to FQDN, then export;
But for unknown reason my stupid tablet wants a password I don't know when installing the cert... I thought that was what I was setting in "Export Password", but isn't accepted. New try... Glad you succeeded after all the hassle!
Will try adding one with openssl this time

johnpoz

@furom your lower version of android might not like high, try the low or legacy option.

You said your on 7 right - man that is pretty old, I thought my tablet was behind with 12.. heheh

btw: the security on getting this cert from your cert manager to your client should be good anyway - not like this is leaving your network, etc. make sure you use a dumb password that is impossible to mess up, its only need to install the certs on your tablet - ie just used "test"..

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom your lower version of android might not like high, try the low or legacy option.

You said your on 7 right - man that is pretty old, I thought my tablet was behind with 12.. heheh

btw: the security on getting this cert from your cert manager to your client should be good anyway - not like this is leaving your network, etc. make sure you use a dumb password that is impossible to mess up, its only need to install the certs on your tablet - ie just used "test"..

Yeah, I have thought of getting a new one but as this works (kind of), it feels dumb to do, but may have to soon. "The computer race" is something I have never tried to win, it is not possible with new models every 15 minutes...
Made a new try, this time adding pw with openssl, and now it installs, but still "certificate unknown"... So I probably mess up the fields when creating it still...
I did

ed25519
Common Name: tablet.domain.local
Cert Type: User Certificate
Alt Names: tablet.domain.local

which should be the minimum required, right?

~~Just struck me, the CA maybe is warped... did I forget something with that maybe, will figure...~~

furom

@furom Something is very wrong with my tablet... It forgets the certs I install... Sometimes I can't see what I just installed... So perhaps an issue with the tablet itself more than the certs... Add to that, the strange firmware that just appeared for it too :/
It is old, but did work before, so should again. I will reinstall Android on it and see if that may help. If not, it may be time to get a new one

or... could it be it can't handle ed25519 certs... hm. will try rsa once more...

furom

@furom Unreal... You have been most helpful John, and still this fails to authenticate. I will put this to rest for now, it is not that important. Should be more fun than anything. If I ever manage to make it work again I will document every part down to the letter (thought I had that but no), but that is for a rainy day I suppose.

johnpoz

@furom do you not have something else to test with, iphone, ipad, windows machine?

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom do you not have something else to test with, iphone, ipad, windows machine?

I may have an old windows laptop still around, it's should be Win10 I think, will see if I can find it, but now when I think of it, a VM with Ubuntu should do just as good, or would Windows have any advantages here?

johnpoz

@furom A vm that has access to your wireless should be able to work as well.

Don't you have phone - that is running newer version of android maybe?

furom

@johnpoz said in freeRadius / Unifi AP / EAP-TTLS ?:

@furom A vm that has access to your wireless should be able to work as well.

Well, I was thinking of wired 802.1X, that would still test the certs, right? But true, I've never really heard of a true wireless VM, probably not the easiest route...

Don't you have phone - that is running newer version of android maybe?

That I can configure, no

I'm still uncertain if I'm actually creating the certs to contain the correct stuff or not. I have read too much, tried way too many different configs. There aren't that many fields to fill, but plenty to create mistakes with stil.

I have the devices ("tablet")/("windows"), a domain ("domain.local") and a user ("raduser").

Common Name (CN): tablet.domain.local
Country Code: <code>
Alternative Names: tablet.domain.local

Would this seem to be correct?

Then in the connecting end, on the device;

ca cert
client cert
domain: domain.local
identity: unsure of this one, think it should be 'tablet.domain.local'?