Vpnsec Linux install
Installation with NetworkManager on Ubuntu 16.04.1 LTS
Ubuntu 16.04: If you are currently using vpnsec.science.ru.nl, please do not upgrade to Ubuntu 16.04. There is a known bug people are trying to fix, see msg4923789.
With Ubuntu 16.04.1 LTS it is now possible to use ipsec. However some manual configuration has to be performed, editting the connection using the VPN applet is not possible,
Install required software:
$ sudo apt install strongswan-nm network-manager-strongswan libstrongswan-standard-plugins strongswan-plugin-eap-mschapv2
- Copy the contents below to /etc/NetworkManager/system-connections/VPN-science
- Change USERNAME to your science login
- Change the permissions to -rw------- (owner +rw, group, other no permissions)
- chmod u=rw,go= /etc/NetworkManager/system-connections/VPN-science
[connection] id=vpnsec.science.ru.nl uuid=1e0ab541-e051-41c2-819f-a005b296c53b type=vpn autoconnect=false permissions= secondaries= timestamp=1465384551 [vpn] virtual=yes encap=yes address=vpnsec.science.ru.nl user=USERNAME method=eap password-flags=0 ipcomp=no service-type=org.freedesktop.NetworkManager.strongswan [vpn-secrets] password= [ipv4] dns-search= method=auto [ipv6] addr-gen-mode=stable-privacy dns-search= ip6-privacy=0 method=auto
Reboot the machine before trying to use the VPN connection.
Starting the connection is identical to Ubuntu 14.04. (When starting the VPN connection, your science password is requested)
NB: The password will be stored in plain text in the file mentioned above!
Installation with NetworkManager on Ubuntu 14.04 LTS
This procedure assumes using NetworkManager. See below for a manual procedure.
Install the required software:
$ sudo apt-get install network-manager-strongswan strongswan-plugin-eap-mschapv2 The following NEW packages will be installed: libstrongswan{a} network-manager-strongswan strongswan-ike{a} strongswan-nm{a} strongswan-plugin-eap-mschapv2 strongswan-plugin-openssl{a} ... $ sudo service network-manager stop network-manager stop/waiting $ sudo service network-manager start network-manager start/running, process 29031
Configuration:
Select the NetworkManager applet and after that Edit Connections...
Click Add, select IPsec/IKEv2 in the section VPN, click Create
Enter data at:Connection name, Address (vpnsec.science.ru.nl), loginname, etc. and check the marks where needed.
Save: (Save and Close)
Start the VPN. Select the NetworkManager applet, next VPN Connections and finally the connection created.
Known problems
If the VPN connection has been established, but ping ns1.science.ru.nl doesn't work, while ping 131.174.224.4 does work, then probably dnsmasq is the culprit. This can be solved bij disabling the dnsmasq DNS cache, as is described in Ask Ubuntu: DNS problem when connected to a VPN:
First make sure that there are no lines beginning with nameserver in any files in /etc/resolvconf/resolv.conf.d. If /etc/resolvconf/resolv.conf.d/tail is a symbolic link to target original, make it point to /dev/null. Second, disconnect from the VPN. Edit /etc/NetworkManager/NetworkManager.conf $ sudo gedit /etc/NetworkManager/NetworkManager.conf and comment out dns=dnsmasq (i.e., add a # so that it looks like the following) #dns=dnsmasq and then sudo service network-manager restart
Installation with NetworkManager on Debian Jessie
Unfortunately, the strongswan-network-manager package did not make it to Debian Jessie (and as of writing, is not in jessie-backports either). Nevertheless, backporting the current version of the package appears to work fine. The steps involved in achieving this were taken almost verbatim from this guide.
First you have to install the debian packaging tools:
sudo apt-get install packaging-dev debian-keyring devscripts equivs
Afterwards you have to download the debian source package:
dget -x http://http.debian.net/debian/pool/main/n/network-manager-strongswan/network-manager-strongswan_1.3.1-1.dsc
Install potentially missing dependencies:
cd network-manager-strongswan-1.3.1/ sudo mk-build-deps --install --remove
Add a backport revision number:
dch --local ~bpo80+ --distribution jessie-backports "Rebuild for jessie-backports."
Build the package (without package signing)
dpkg-buildpackage -us -uc
Install the newly built package:
sudo dpkg -i ../network-manager-strongswan_1.3.1-1~bpo80+1_amd64.deb
Install potentially missing dependencies, just to be sure:
sudo apt-get install -f
Install additional plugins (most notably the eap-mschapv2 plugin):
sudo apt-get install libcharon-extra-plugins
Restart network manager
sudo systemctl restart network-manager.service
Installation without NetworkManager
Note: Below some remarks on doing this for Fedora Core (FC23).
Install strongswan, including the curl, eap-identity, eap-mschapv2 and eap-md5 (required for eap-mschapv2) plugins. When you compile strongswan from source, make sure to pass the right parameters to the configure script.
$ ./configure --enable-curl --enable-md5 --enable-openssl --enable-xauth-eap --enable-eap-md5 --enable-eap-gtc --enable-eap-tls --enable-eap-ttls --enable-eap-peap --enable-eap-mschapv2 --enable-eap-identify $ make $ sudo make install
You can test which plugins are loaded with sudo ipsec statusall or sudo ipsec listplugins. If necessary you can load plugins manually by editing strongswan.conf.
Make sure your ipsec.conf, probably located in /etc or in /usr/local/etc, looks like this:
config setup strictcrlpolicy=yes conn %default ikelifetime=60m keylife=20m rekeymargin=3m keyingtries=1 keyexchange=ikev2 conn science left=%defaultroute leftfirewall=yes leftsourceip=%config leftauth=eap-mschapv2 leftid=mysciencelogin <-- edit this eap_identity=mysciencelogin <-- edit this right=vpnsec.science.ru.nl rightauth=pubkey rightid=@vpnsec.science.ru.nl rightsubnet=0.0.0.0/0 forceencaps=yes auto=start
And your ipsec.secrets as follows, where you enter your own Science account name and password. Watch out that this file cannot be read by everyone, as it contains your password! It is typically owned by root:root with -rw------- (600) permissions.
mysciencelogin : EAP "mypassword"
Everything should work now:
$ sudo ipsec start $ sudo ipsec up science
It can be necessary to put the root certificate in the right folder manually:
$ sudo ln -s /etc/ca-certificates/extracted/cadir/DigiCert_Assured_ID_Root_CA.pem [/usr/local]/etc/ipsec.d/cacerts/DigiCert_Assured_ID_Root_CA.pem
Fedora (FC23)
Work in progress... [Gebruiker:Arjen], FC23, 4/3/2016:
On Fedora (tested on FC23), replace command ipsec by strongswan in the instructions above.
To get the newest SELinux policies, you need to issue:
dnf update --enablerepo=updates-testing selinux-policy
Edit /etc/strongswan/strongswan.d/charon/resolve.conf to include a line:
file = /etc/resolv.conf
To resolve errors about certificate CN=TERENA SSL CA 3 not being trusted:
Navigate to [2] Download DigiCert_Assured_ID_Root_CA.crt and TERENA_SSL_CA_3.crt.
Next, extract the .pem files, copy these to the strongswan config directories, and reread the certificates, like this:
openssl x509 -inform DES -in DigiCert_Assured_ID_Root_CA.crt -out DigiCert_Assured_ID_Root_CA.pem -text openssl x509 -inform DES -in TERENA_SSL_CA_3.crt -out TERENA_SSL_CA_3.pem -text cp DigiCert_Assured_ID_Root_CA.pem /etc/strongswan/ipsec.d/cacerts cp TERENA_SSL_CA_3.pem /etc/strongswan/ipsec.d/certs strongswan rereadall
To overcome problems with DNS, I had to stop service `libvirtd`. Yet to be resolved.