Instructions and patch for compiling IKE software (Shrew Soft VPN) for Ubuntu 20.04.

All credits to Fabrizio Allevi, https://sites.google.com/view/uptolinux/ike_20-04.

This is a personal procedure that worked for some guys on their systems. Nobody is taking any responsibility if in your case this does not work or causes any damage. Apply these instructions only under your responsibility and at your own risk.

sudo -i
cd /usr/local/src/
wget https://www.shrew.net/download/ike/ike-2.2.1-release.tbz2
tar xjf ike-2.2.1-release.tbz2
find ike/ -type f | xargs -r dos2unix
cd ike/
wget https://raw.githubusercontent.com/MaxChinni/ike-for-ubuntu/master/ike.patch
patch -p1 < ike.patch
apt install build-essential libssl-dev libaudio-dev libcups2-dev cmake libedit-dev g++ flex bison
cmake -DCMAKE_INSTALL_PREFIX=/usr -DQTGUI=NO -DETCDIR=/etc -DNATT=YES
make
make install
mv /etc/iked.conf.sample /etc/iked.conf

1. Copy your configuration files under your ~/.ike/sites/ directory (i.e. ~/.ike/sites/work.vpn)

2. Start the daemon

    sudo iked
   

3. Connect to the VPN, i.e.

    ikec -r work.vpn