How to install IKE software on Ubuntu 20.04

Solution 1:

Following the above general instructions and after googling some time, I found also the way to enable ShRew to run full, including GUI, on ubuntu 20+ / Debian 9+.

You can download the full software from https://mega.nz/file/4xV10IqZ#nmAJYGBJvdcI5jhp61DAIHhM4ILKg8x2hHYTpJD6eP4

Execute the script install_shrew.sh and VOILA!!!

Please, test and share (if you like) :)

Thanks to Kulfy for his good work

Solution 2:

After reading some forum, I decide to recompile sources under Ubuntu 20.04 because this packet is out of maintenance until some years. The dependencies, packets and libraries were no longer installable in 20.04 LTS. I've fixed issue to old library and created a patch to apply at the last version of source file (shrew soft iked and ikec). This procedure you will find here below and the patch file is in my blog.

Download the extract the sources.

wget https://www.shrew.net/download/ike/ike-2.2.1-release.tbz2
sudo tar jxpvf ike-2.2.1-release.tbz2
cd ike

Copy in this directory ike.patch file.

patch -p1 < ike.patch
sudo apt-get install build-essential libssl-dev libaudio-dev libcups2-dev  cmake libedit-dev g++

Now recompile with NO-GUI directive.

cmake -DCMAKE_INSTALL_PREFIX=/usr -DQTGUI=NO -DETCDIR=/etc -DNATT=YES
make
sudo make install
sudo iked 

Check if yourServer.vpn file is present under your "~/.ike/sites/" directory. If no copy it without .vpn extension (like this: ~/.ike/sites/yourServer)

ikec -r yourServer -a

If all goes well, you should see at the end

...

"ii : tunnel enabled"

I hope that can help someone.

Solution 3:

Another possible answer is using deb packages:

1. Add QT4 Repo:

   sudo add-apt-repository ppa:rock-core/qt4
   sudo apt update
   

   Source: How to Install Qt4 Libraries in Ubuntu 20.04 LTS | UbuntuHandbook

2. Install dependencies:

   apt install cmake libssl-dev libedit-dev flex bison qt4-default qt4-qmake
   

   Source: Forticlient IPSec VPN on Ubuntu Linux • lorenzo milesi

3. Download old deb files (from bionic):

   • https://packages.ubuntu.com/bionic/libssl1.0.0
   • https://packages.ubuntu.com/bionic/ike
   • https://packages.ubuntu.com/bionic/net/ike-qtgui

   Install the debs with sudo dpkg -i <file.deb> in the order:

   libssl1.0.0 
   ike
   ike-qtgui
   

   In my case (AMD64):

   mkdir ~/ikedebs
   cd ~/ikedebs
   wget http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb
   wget http://mirrors.kernel.org/ubuntu/pool/universe/i/ike/ike_2.2.1+dfsg-6_amd64.deb
   wget http://mirrors.kernel.org/ubuntu/pool/universe/i/ike/ike-qtgui_2.2.1+dfsg-6_amd64.deb
   sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb
   sudo dpkg -i ike_2.2.1+dfsg-6_amd64.deb
   sudo dpkg -i ike-qtgui_2.2.1+dfsg-6_amd64.deb
   

and voila!

Once installed, launch using

sudo iked

to start daemon.

for GUI:

qikea