[Completed] Working eap-tls / pfSense 2.2 - $100 USD

hege

strongswan seems to ignore the cert completly if it's not referenced in the conf.

I added the pub, and even the private key to the right directories and after "ipsec rerreadall" it only shows my used pfSense cert with "ipsec listcerts" (and only the CA cert with listcacerts)

If I add this to the config, the peer cert is available with listcerts
"rightcert=/var/etc/ipsec/ipsec.d/certs/peercert.crt"
but than I get
"charon: 01[CFG] no matching peer config found"

I can also see my peer cert after the first successfully connection
(with eap_identity = "C=, ST=, L=, O=, OU=, CN=, E=*")

very strange…

I will build a new test deployment with different certs and clients(also a strongswan client) at the weekend....

eri--

Can you try instead of eap_identity to put aaa_identity = %any and retry?

hege

Unfortunately,

aaa_identity=%any
and
aaa_identity=%any
eap_identity=%any

Jan 15 20:06:56 charon: 10[IKE] EAP method EAP_TLS failed for peer CLIENT-IP
Jan 15 20:06:56 charon: 10[TLS] sending fatal TLS alert 'certificate unknown'
Jan 15 20:06:56 charon: 10[TLS] no trusted certificate found for 'CERT-CN' to verify TLS peer
Jan 15 20:06:56 charon: 10[TLS] received TLS peer certificate 'C=XX, ST=XXXXXX, L=XXX, O=XXX, OU=XXX, CN=CERT-CN, E=XXX'

aaa_identity=%identity

Jan 15 20:08:27 charon: 07[TLS] sending fatal TLS alert 'handshake failure'
Jan 15 20:08:27 charon: 07[TLS] no usable TLS server certificate found for '%identity'

eri--

What algo is the signature on the client cert, SHA1 something else?

Can you validate this cert with the pki –verify tool of strongswan?

It is available with pfSense.

hege

sha512 :)

pki –verify --in /tmp/VPN-Client.crt --cacert /var/etc/ipsec/ipsec.d/cacerts/1eb57a16.0.crt

using certificate 'C=XX, ST=XXXXXX, L=XXX, O=XXX, OU=XXX, CN=CERT-CN, E=XXX'
using trusted ca certificate 'C=XX, ST=XXXXXX, L=XXX, O=XXX, OU=XXX, CN=CA-CERT-CN, E=XXX'
reached self-signed root ca with a path length of 0
certificate trusted, lifetimes valid

I do this tests currently in my private network, at weekend I will create a new test setup with weaker and non sensible certs, so I can give you more information if needed.

eri--

Oh can you try removing the leftid settings from the profile and see if that fixes it?

hege

nope,

Jan 15 22:06:23 charon: 13[TLS] no trusted certificate found for 'CERT-CN' to verify TLS peer

(with and without eap_identity)

eri--

What if you do even leftauth=eap-tls or as usual but adding rightsendcert=never?

Also can you post full ipsec.conf section of the connection?

EDIT: also can you see based on this https://wiki.strongswan.org/projects/strongswan/wiki/Win7EapMultipleConfig

hege

Jan 15 22:15:53 charon: 07[IKE] configured EAP-only authentication, but peer does not support it
Jan 15 22:15:53 charon: 07[IKE] <con3|43>configured EAP-only authentication, but peer does not support it


conn con3
        reqid = 3
        fragmentation = yes
        keyexchange = ikev2
        reauth = yes
        forceencaps = no
        rekey = yes
        installpolicy = yes
        type = tunnel
        dpdaction = none
        auto = add
        left = WAN-IP
        right = %any
        compress = yes
        ikelifetime = 28800s
        lifetime = 3600s
        rightsourceip = 172.16.94.0/24
        ike = aes256-sha256-modp1024!
        esp = aes256-sha1-modp1024,aes256-sha256-modp1024!
        eap_identity=%identity
        leftauth=eap-tls
        rightauth=eap-tls
        leftcert=/var/etc/ipsec/ipsec.d/certs/cert-3.crt
        rightsubnet = 172.16.94.0/24
        leftsubnet = 0.0.0.0/0

edit: with usual but rightsendcert=never same as always

Jan 15 22:19:11 charon: 13[TLS] sending fatal TLS alert 'certificate unknown'
Jan 15 22:19:11 charon: 13[TLS] no trusted certificate found for 'Client-CN' to verify TLS peer</con3|43>

eri--

Can you try with as usual but adding rightsendcert=never?

Can you also try a config as per https://wiki.strongswan.org/projects/strongswan/wiki/Win7EapMultipleConfig

hege

Your link is pointing to a working eap-mschapv2 config (the one I used for my first tests with mschap)

I tried it now, and some days ago, with this config and many variations without success
https://wiki.strongswan.org/projects/strongswan/wiki/Win7UserMultipleConfig

Windows 8
Jan 15 22:36:08 charon: 11[JOB] deleting half open IKE_SA after timeout
Jan 15 22:36:00 charon: 11[NET] sending packet: from Server-IP[500] to Client-IP[500] (108 bytes)

Windows Phone
Jan 15 22:19:11 charon: 13[TLS] sending fatal TLS alert 'certificate unknown'
Jan 15 22:19:11 charon: 13[TLS] no trusted certificate found for 'Client-CN' to verify TLS peer

conn con3
        reqid = 3
        fragmentation = yes
        keyexchange = ikev2
        reauth = yes
        forceencaps = no
        rekey = yes
        installpolicy = yes
        type = tunnel
        dpdaction = none
        auto = add
        left = 123.123.123.123
        right = %any
        compress = yes
        ikelifetime = 28800s
        lifetime = 3600s
        rightsourceip = 172.16.94.0/24
        ike = aes256-sha256-modp1024!
        esp = aes256-sha1-modp1024,aes256-sha256-modp1024!
        leftauth=pubkey
        rightauth=eap-tls
        leftcert=/var/etc/ipsec/ipsec.d/certs/cert-3.crt
        rightsubnet = 172.16.94.0/24
        leftsubnet = 0.0.0.0/0
        rightsendcert=never

I really need some sleep, I will continue until tomorrow evening, and I hope that with the windows 8 debug files it should be easier to find the issue. - Windows Phone is hard to debug.

hege

After hours of testing and searching I finally could connect with a workaround, which is unusable for productive use :(

My test environment: (I can give you direct access if you like - just pm me)

Certs generated by pfSense (root cert / vpn cert / client cert - vpn cert with the DNS name as SAN)


pfSense 2.2 RC Config
	WAN	84.123.123.122
	Lan	192.168.123.1 
	EAP-TLS:
		My identifier: fw.test.domain.local
		My Cert:	fw.test.domain.local (Server Cert / Alt.Name: fw.test.domain.local/ issued by Test-CA)
		My CA:		Test-CA
	P1:	AES 256 / SHA256 / DH2 / Lifetime 28800 / NAT AUto / DPD 10,5
	P2:	Network: 0.0.0.0/0 / ESP / AES256 / SHA1 / PFS OFF / Lifetime 3600
Win 8 Config
	LAN: 84.123.123.123 (direct WAN Access)
	IKEv2 Config:
		Hostname: fw.test.domain.local
		Type: 	IKEv2
		encryption:	Require encryption
		Authentication: EAP
			Use a certificate on this computer (advanced: issued by Test-CA)
			Verify the servers identity
			Connect to these servers
				fw.test.private.domain
			Trusted Root CA:
				Test-CA
			Use a different user name for the connection

Connect:
Cert: Test-VPNCLient
Connection user name: C=US, ST=Vienna, L=Vienna, O=Test, E=test@domain.local, CN=Test-VPNClient

Connection and successful traffic to 192.168.123.1 !

Successful connection logs:
Edit: removed connection log

hege

Connection without "Use a different user name for the connection" option and with variations of eap_identity (%any / %identity)

charon: 16[IKE] EAP method EAP_TLS failed for peer 84.123.123.123
..
charon: 16[TLS] no trusted certificate found for 'Test-VPNClient' to verify TLS peer
..
charon: 16[TLS] received TLS peer certificate 'C=US, ST=Vienna, L=Vienna, O=Test-Hege, E=test@test.domain, CN=Test-VPNClient'
..
charon: 13[IKE] received EAP identity 'Test-VPNClient'

Edit: removed the log file

eri--

What do you mean by unusable ?
I did not understand why its unusable for production use?

hege

The VPN-user have to paste the full cert value as his username, which is very long and you can't save this value, so you have to insert this "username" every time.

eap-tls have to work without any user-input.

Also this workaround is not possible on Windows Phone, because you can't specify an username there.

Edit: Maybe that is the solution https://lists.strongswan.org/pipermail/users/2010-October/000814.html - I will try that as soon as possible!
Edit2: Yep, just a client cert issue, such a waste of free time…

Cert requirements,

Full trust of chain (Root CA have to be installed on the client)
pfSense Server cert needs the EKU "Server Authentification", also the FQDN in the Subject Alternative Names
pfSense Client Cert needs the EKU "Client Authentification", also the CN name as a FQDN in the SAN

ermal, THANK YOU VERY MUCH!

Please let me know, how I can donate my bounty to pfSense.

eri--

I think buying the gold package is the nearest donate approach :)

Thank you, hege for confirming it works.

hege

done, bit I still owe you a dollar :)