tpotce/installer/home/2fa_enable.sh
2016-03-07 15:48:44 +01:00

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#!/bin/bash
########################################################
# T-Pot #
# Two-Factor-Authentication and SSH enable script #
# #
# v16.03.1 by mo, DTAG, 2016-03-07 #
########################################################
myBACKTITLE="T-Pot - Two-Factor-Authentication and SSH enable script"
# Let's ask if the user wants to enable two-factor ...
dialog --backtitle "$myBACKTITLE" --title "[ Enable 2FA? ]" --yesno "\nDo you want to enable Two-Factor-Authentication based on Google Authenticator for SSH?" 8 70
my2FA=$?
# Let's ask if the user wants to enable ssh ...
dialog --backtitle "$myBACKTITLE" --title "[ Enable SSH? ]" --yesno "\nDo you want to enable the SSH service?" 8 70
mySSH=$?
# Enable 2FA
if [ $my2FA == 0 ] && ! [ -f /etc/pam.d/sshd.bak ];
then
clear
sudo sed -i.bak '\# PAM#aauth required pam_google_authenticator.so' /etc/pam.d/sshd
sudo sed -i.bak 's#ChallengeResponseAuthentication no#ChallengeResponseAuthentication yes#' /etc/ssh/sshd_config
google-authenticator -t -d -f -r 3 -R 30 -w 21
echo "2FA enabled. Please press return to continue ..."
read
elif [ -f /etc/pam.d/sshd.bak ]
then
dialog --backtitle "$myBACKTITLE" --title "[ Already enabled ]" --msgbox "\nIt seems that Two-Factor-Authentication has already been enabled. Please run 'google-authenticator -t -d -f -r 3 -R 30 -w 21' if you want to rewrite your token." 8 70
fi
# Enable SSH
if [ $mySSH == 0 ] && [ -f /etc/init/ssh.override ];
then
clear
sudo rm /etc/init/ssh.override
sudo service ssh start
dialog --backtitle "$myBACKTITLE" --title "[ SSH enabled ]" --msgbox "\nThe SSH service has been enabled and is now reachable via port tcp/64295. Password authentication is disabled by default." 8 70
elif ! [ -f /etc/init/ssh.override ]
then
dialog --backtitle "$myBACKTITLE" --title "[ Already enabled ]" --msgbox "\nIt seems that SSH has already been enabled." 8 70
fi