Environment:# uname -aLinux shrimpwagon 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u1 (2017-02-22) x86_64 GNU/LinuxI have already installed:# apt-get install strongswan xl2tpdI'm trying to connect to a Meraki VPN. I spoke to a Meraki tech and he said that it looks like it is not authenticating but didn't give me much more detail:# ipsec up L2TP-PSKgenerating QUICK_MODE request 2711688330 [ HASH SA No ID ID NAT-OA NAT-OA ]sending packet: from 10.0.0.4[4500] to 50.123.152.194[4500] (252 bytes)received packet: from 50.123.152.194[4500] to 10.0.0.4[4500] (68 bytes)parsed INFORMATIONAL_V1 request 2555305796 [ HASH N(NO_PROP) ]received NO_PROPOSAL_CHOSEN error notifyestablishing connection 'L2TP-PSK' failedipsec.conf:config setup    virtual_private=%v4:10.0.0.0/8#   nat_traversal=yes    protostack=auto    oe=off    plutoopts=--interface=eth0conn L2TP-PSK    keyexchange=ikev1    ike=aes128-sha1-modp1024,3des-sha1-modp1024!    phase2=ah    phase2alg=aes128-sha1-modp1024,3des-sha1-modp1024!    authby=secret    aggrmode=yes    pfs=no    auto=add    keyingtries=2#   dpddelay=30#   dpdtimeout=120#   dpdaction=clear#   rekey=yes    ikelifetime=8h    keylife=1h    type=transport    left=%defaultroute#   leftnexthop=%defaultroute#   leftprotoport=udp/l2tp    right=50.123.152.194    rightsubnet=10.2.150.0/24ipsec.secrets:%any %any : PSK ****xl2tpd.conf:[lac vpn-connection]lns = 50.123.152.194;refuse chap = yes;refuse pap = no;require authentication = yes;name = vpn-serverppp debug = yespppoptfile = /etc/ppp/options.l2tpd.clientlength bit = yesoptions.l2tpd.client:ipcp-accept-localipcp-accept-remoterefuse-eaprequire-mschap-v2noccpnoauthidle 1800mtu 1410mru 1410defaultrouteusepeerdnsdebuglockconnect-delay 5000name swelchpassword ****I have gotten most of my instructions from this site:https://www.elastichosts.com/blog/linux-l2tpipsec-vpn-client/I did have to put it into aggresive mode, specify ikev1 and set the ike algorithms. Once I did that then I was able to start communicating to the MX. But I'm getting this error now and I am at a total loss.Thanks in advance!
IPSec over L2TP: received NO_PROPOSAL_CHOSEN error notify
networking;vpn;ipsec;openswan;xl2tpd