[strongSwan] help setting up basic VPN on ubuntu
Imran Akbar
skunkwerk at gmail.com
Sun Nov 30 23:43:42 CET 2014
Sure Noel,
Here's the complete server log from startup up to and including the
authentication request: http://pastebin.com/X8a0xunC
And this is a screenshot
<https://s3.amazonaws.com/pushbullet-uploads/ujBvnCpT4IC-kZXEDbaZszgiNSnbFKRLvu9QxRtio85p/Screenshot_2014-11-30-14-35-29.png>
of how I'm connecting via the StrongSwan Android app
yours,
imran
On Sun, Nov 30, 2014 at 1:23 PM, Noel Kuntze <noel at familie-kuntze.de> wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Hello Imran,
>
> Do you mind posting the complete log from daemon start to the error?
>
> And yes, PSK is the easiest way, but if you are experienced with
> certificates, you can also take that approach.
>
>
> Mit freundlichen Grüßen/Regards,
> Noel Kuntze
>
> GPG Key ID: 0x63EC6658
> Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
>
> Am 30.11.2014 um 20:34 schrieb Imran Akbar:
> > Hey Noel,
> > I feel like it's close to working, but still getting the same
> message after making that change and restarting. Do you think it's the
> "config inacceptable" error that's causing authentication to fail, or is it
> something in my secrets file?
> >
> > ipsec.conf now looks like: http://pastebin.com/tUN6jmaS
> >
> > the server log says:
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[CFG] looking for peer configs
> matching 172.31.25.2[%any]...76.126.165.62[app]
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[CFG] selected peer config 'vpn'
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[IKE] peer requested EAP,
> config inacceptable
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[CFG] no alternative config
> found
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[IKE] received
> ESP_TFC_PADDING_NOT_SUPPORTED, not using ESPv3 TFC padding
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[IKE] peer supports MOBIKE
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[ENC] generating IKE_AUTH
> response 1 [ N(AUTH_FAILED) ]
> > Nov 30 19:16:02 ip-172-31-25-2 charon: 14[NET] sending packet: from
> 172.31.25.2[4500] to 76.126.165.62[37721] (76 bytes)
> >
> > and the client log says "parsed IKE_AUTH response 1 [ N(AUTH_FAILED) ]
> >
> > Is using a PSK the easiest way to setup StrongSwan? I assumed that was
> the case, but I tried using certificates as well by following this example (
> http://kleinerman.org/ipsec-with-strongswan/) but I get stuck at the last
> step, as the Android app wants a client certificate as well, which I
> haven't generated.
> >
> > thanks again,
> > imran
> >
> >
> >
> > On Sun, Nov 30, 2014 at 2:39 AM, Noel Kuntze <noel at familie-kuntze.de
> <mailto:noel at familie-kuntze.de>> wrote:
> >
> >
> > Hello Imran,
> >
> > I gave you wrong information in my last email. I'm sorry.
> >
> > The correct setting is "eap-mschapv2", not "eap-mschap".
> >
> >
> > Mit freundlichen Grüßen/Regards,
> > Noel Kuntze
> >
> > GPG Key ID: 0x63EC6658
> > Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
> >
> > Am 30.11.2014 um 05:09 schrieb Imran Akbar:
> > > thanks Noel,
> >
> > > I've made those changes and restarted ipsec, but I'm still getting the
> same error in my server log:
> >
> > > "peer requested EAP, config inacceptable"
> > > "no alternative config found"
> >
> > > This is my updated ipsec: http://pastebin.com/TnZaiZX8
> >
> > > Does that look correct?
> >
> > > appreciate the help,
> > > imran
> >
> > > On Sat, Nov 29, 2014 at 5:47 PM, Noel Kuntze <noel at familie-kuntze.de
> <mailto:noel at familie-kuntze.de> <mailto:noel at familie-kuntze.de <mailto:
> noel at familie-kuntze.de>>> wrote:
> >
> >
> > > Hello Imram,
> >
> > > If you want to use psk-mschapv2, you need to specify
> > > leftauth=psk
> > > rightauth=psk
> > > rightauth2=eap-mschap
> >
> > > Please make sure this is in your configuration.
> >
> > > Mit freundlichen Grüßen/Regards,
> > > Noel Kuntze
> >
> > > GPG Key ID: 0x63EC6658
> > > Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
> >
> > > Am 30.11.2014 um 02:09 schrieb Imran Akbar:
> > > > thanks for pointing me in the right direction Noel.
> >
> > > > I've installed strongswan-plugin-eap-mschapv2, added
> rightauth=eap-mschapv2 to my ipsec.conf file, and restart ipsec.
> > > > I now see the following when I try to connect:
> >
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[CFG] looking for peer
> configs matching 172.31.25.2[%any]...76.126.165.62[app]
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[CFG] selected peer config
> 'vpn'
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[IKE] using configured
> EAP-Identity app
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[IKE] initiating
> EAP_MSCHAPV2 method (id 0xBE)
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[IKE] received
> ESP_TFC_PADDING_NOT_SUPPORTED, not using ESPv3 TFC padding
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[IKE] peer supports MOBIKE
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[CFG] no IDr configured,
> fall back on IP address
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[IKE] no private key found
> for '172.31.25.2'
> > > > Nov 30 00:29:27 ip-172-31-25-2 charon: 01[ENC] generating IKE_AUTH
> response 1 [ N(AUTH_FAILED) ]
> >
> > > > It seems like I need to tell it to use the username/password,
> instead of looking for a key... or is a certificate mandatory for all EAP
> configurations, even using a username/password?
> >
> > > > regards,
> > > > imran
> >
> > > > On Sat, Nov 29, 2014 at 4:03 PM, Noel Kuntze <noel at familie-kuntze.de
> <mailto:noel at familie-kuntze.de> <mailto:noel at familie-kuntze.de <mailto:
> noel at familie-kuntze.de>> <mailto:noel at familie-kuntze.de <mailto:
> noel at familie-kuntze.de> <mailto:noel at familie-kuntze.de <mailto:
> noel at familie-kuntze.de>>>> wrote:
> >
> >
> > > > Hello Imran,
> >
> > > > You need to specify rightauth2=eap-mschapv2, so strongSwan is
> configured correctly to accept
> > > > eap authentication using mschapv2 in round 2.
> >
> > > > You also lack the eap-mschapv2 modules, that you need for
> eap-mschapv2.
> > > > Install it via your package manager or, if you built strongSwan
> yourself, configure the strongSwan sources with --enable-eap-mschapv2,
> > > > "make uninstall" "make clean" "make" and "make install".
> >
> > > > Also, please make sure you send your answer to all parties involved,
> not just me.
> >
> > > > Mit freundlichen Grüßen/Regards,
> > > > Noel Kuntze
> >
> > > > GPG Key ID: 0x63EC6658
> > > > Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
> >
> > > > Am 30.11.2014 um 00:54 schrieb Imran Akbar:
> > > > > Hey Noel and Thomas,
> >
> > > > > thanks for your help.
> > > > > I've made some progress - I'm now getting an "AUTH FAILED" error
> from my client.
> > > > > I'm trying to connect via the StrongSwan client on Android using
> IKEv2 EAP (username/password).
> >
> > > > > Here is my ipsec.conf: http://pastebin.com/Ap5gUX0f
> >
> > > > > Here is my secrets.conf: http://pastebin.com/hhX9micY
> >
> > > > > Here is my server log: http://pastebin.com/W99PPKt3 (looks like
> the key issue is "peer requested EAP, config inacceptable")
> >
> > > > > Here is my client log: http://pastebin.com/2w9NS1Zs
> >
> > > > > I'm going to keep tweaking the authentication configs to see if I
> can make it work.
> >
> > > > > yours,
> > > > > imran
> >
> >
> > > > > On Sat, Nov 29, 2014 at 9:04 AM, Noel Kuntze <
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de>> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de>>> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de>> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de> <mailto:
> noel at familie-kuntze.de <mailto:noel at familie-kuntze.de>>>>> wrote:
> >
> >
> > > > > Hello Imran,
> >
> > > > > IPsec/L2TP is mostly used with IKEv1, not IKEv2. Please tell us
> what clients you're trying to use,
> > > > > to make sure they try to use IKEv2, too.
> >
> > > > > L2TP is not handled by strongSwan. You need to use xl2tp for that.
> Most clients try to use transport mode
> > > > > for the IPsec connection. Make sure your peer configuration has
> that specified. Also, plese make strongSwan
> > > > > write a log [1] with the settings shown in [2], show us the log
> that was created and show us your ipsec.conf.
> >
> > > > > [1]
> https://wiki.strongswan.org/projects/strongswan/wiki/LoggerConfiguration
> >
> > > > > [2]
> > > > > default = 3
> > > > > mgr = 1
> > > > > ike = 1
> > > > > net = 1
> > > > > enc = 0
> > > > > cfg = 2
> > > > > asn = 1
> > > > > job = 1
> > > > > knl = 1
> > > > > append=no
> > > > > ike_name=no
> > > > > flush_line=yes
> >
> >
> > > > > Mit freundlichen Grüßen/Regards,
> > > > > Noel Kuntze
> >
> > > > > GPG Key ID: 0x63EC6658
> > > > > Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
> >
> > > > > Am 29.11.2014 um 17:53 schrieb Imran Akbar:
> > > > > > Hi everyone,
> > > > > > thanks for such a well-developed and maintained library.
> >
> > > > > > I'm trying to setup Ipsec/L2TP on my Ubuntu 14 server with IKEv2
> and a PSK.
> >
> > > > > > I've read through a bunch of tutorials online:
> > > > > >
> http://trick77.com/2014/05/04/strongswan-5-vpn-ubuntu-14-04-lts-psk-xauth/
> > > > > > http://www.foteviken.de/?p=2175
> > > > > >
> http://endlessroad1991.blogspot.com/2014/04/setup-ipsec-vpn-on-ec2.html
> >
> > > > > > and I've opened up UDP ports 500 & 4500, but I still have
> clients complaining about gateway timeouts and not being able to connect to
> the VPN.
> >
> > > > > > Is there some sort of a configuration script that can walk you
> through all the necessary steps to get this working, or a gist that someone
> could share of their config?
> > > > > > I don't see anything in my /var/log/auth.conf that's indicative
> of VPN traffic.
> >
> > > > > > yours,
> > > > > > imran
> >
> >
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