I tested with ikev2, unfortunately, it doesn't work.

Jul 10 22:33:58 ipfire charon: 13[IKE] no IKE config found for IP1...IP2 sending NO_PROPOSAL_CHOSEN


I remind you that you have a page dedicated to this type of connection, here I can read IKEv1. :)
As a reminder, the configuration to put in the file /etc/ipsec.user.secret.user

cat /etc/ipsec.user.secret.user
Xiaomi : XAUTH "PASSWORD"
To apply the idea I propose, you need to know how to use the Bash, and add a login/password data set, it's as easy as modifying in the vpn config file.

I wish to highlight one positive point, by going through the @ipfire:444 frontend, changing the options of a VPN connection, example IKEv1->IKEv2->IKEv1, keeps the xauthrsasig parameter.

It's not an unnecessary fix, that despite a change from the @IPFIRE:444 interface, it keeps the "xauthrsasig" record and writes the VPN connection configuration correctly.

The real question is who will use this improvement?

This is a first step towards XAUTH support, but you still have to want to take it.

Le jeu. 12 juil. 2018 à 11:30, Michael Tremer <michael.tremer@ipfire.org> a écrit :
On Tue, 2018-07-10 at 20:17 +0200, Julien Blais wrote:
> I present what I know that works.  Since I haven't tested, but if you say so,
> it's to be tested.

I suppose setting rightauth=xauth should work for IKEv2 as well as IKEv1.

> I was forgetting, of course, xauth needs a login/password pair to declare in
> ipsec.user.secret.

This kind of renders the patch useless then if there is no way to set username
and password. This could be added to the connection just like entering the PSK.

Best,
-Michael

> Le mar. 10 juil. 2018 à 20:11, Tom Rymes <trymes@rymes.com> a écrit :
> > If I may ask, why IKEv1? Modern iOS and Android both support IKEv2,
> > don't they?
> >
> > Tom
> >
> > On 07/10/2018 2:07 PM, Julien Blais wrote:
> > > Hi Michael,
> > >
> > >
> > > For it to work, you simply need to generate a Roadwarrior connection per
> > > certificate. Then, change what is red, either replace cert by
> > > xauthrsasiget put ikev1 instead of ikev2.
> > >
> > > [root@ipfire ~]# cat /var/ipfire/vpn/config
> > >
> > 2,on,Xiaomi,Xiaomi,host,xauthrsasig,,off,,192.168.10.0/255.255.255.0,,,10.0.
> > 10.0/29,off,,,off,3,1,aes256,sha2_512,1024|768,aes256,sha2_512,1024|768|none
> > ,on,,,clear,on
> > > <http://192.168.10.0/255.255.255.0,,,10.0.10.0/29,off,,,off,3,1,aes256,sha
> > 2_512,1024%7C768,aes256,sha2_512,1024%7C768%7Cnone,on,,,clear,on>,ikev1,120,
> > 30,off,start,900
> > >
> > > Here is the result in the file :
> > >
> > > conn Xiaomi
> > >          left=vpn.jbsky.fr <http://vpn.jbsky.fr>
> > >          leftsubnet=192.168.0.0/24 <http://192.168.0.0/24>
> > >          leftfirewall=yes
> > >          lefthostaccess=yes
> > >          right=%any
> > >          leftcert=/var/ipfire/certs/hostcert.pem
> > >          rightcert=/var/ipfire/certs/Xiaomicert.pem
> > >          ike=aes256-sha2_512-modp1024,aes256-sha2_512-modp768!
> > >         
> > > esp=aes256-sha2_512-modp1024,aes256-sha2_512-modp768,aes256-sha2_512!
> > >          keyexchange=ikev1
> > >          ikelifetime=3h
> > >          keylife=1h
> > >          dpdaction=clear
> > >          dpddelay=30
> > >          dpdtimeout=120
> > >          authby=xauthrsasig
> > >          xauth=server
> > >          auto=add
> > >          rightsourceip=10.0.10.0/29 <http://10.0.10.0/29>
> > >          fragmentation=yes
> > >
> > > Why this patch? it allows to have a functional visual on VPN connections
> > > in the vpnmain.cgi page. Everything that is IOS or Android works with
> > > Xauth, you do not support this type of device.
> >
> >
> >