Finally there is a tool worth using for vpn besides the default from Juniper that works on Linux. Its rather quick to get started.
$ pacman -S openconnect
$ apt-get install openconnect
$ dnf install openconnect
or this if you have older Fedora/RedHat
$ yum install openconnect
Once you have it installed you may need to reboot. This will allow proper access to /dev/net/tun
$ openconnect --juniper vpn.domain.com