Determined Server Setup
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#!/bin/bash
# determined-server-setup (dss)
# Written by Josh Mudge
# Ad Mejorem Dei Glorium
version=$(curl -s https://git.coolaj86.com/josh/dss/raw/branch/master/VERSION | cat)
# Get options from CLI arguments
usr=$USER
init=0
clean=0
log=0
authlog=0
update=0
mon=0
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
--init)
init=1
shift # past argument
;;
--clean)
clean=1
shift # past argument
;;
--log)
log=1
shift # past argument
;;
--authlog)
authlog="$2"
shift # past argument
;;
--user)
usr="$2"
shift # past argument
;;
--user2)
user2="$2"
shift # past argument
;;
--user3)
user3="$2"
shift # past argument
;;
--update)
update=1
shift # past argument
;;
--monitor)
mon=1
shift # past argument
;;
--mon-setup)
mon=2
shift # past argument
;;
--email)
email=1
shift # past argument
;;
--logfile)
logfile=1
shift # past argument
;;
blacklist)
blacklist="$2"
shift # past argument
;;
-h|help)
echo "dss $version"
echo "Usage: dss [OPTION]"
echo "You can run the following commands:"
echo "dss --clean # Update the server and cleanup uneeded files and programs. Use with caution."
echo "dss --log # Print the system log."
echo "dss --authlog 1 # Print the SSH authentication log. Use 'dss authlog attacks' to show attacks on your SSH server."
echo "dss --user USERNAME --init # Setup server with server utilities and enable automatic security updates."
exit 1
;;
-v|version)
echo "dss $version"
exit 1
;;
*)
# unknown option
if test -z "${unknown}"
then
unknown=$1
else
echo "dss $version"
echo "dss --user USERNAME --init # Setup server with server utilities and enable automatic security updates."
exit 1
fi
;;
esac
shift # past argument or value
done
if test $init = 1
then
# Update server
sudo apt-get update
sudo apt-get upgrade -y
# Install server utilities
sudo apt-get install -y screen curl nano htop fail2ban rsync man shellcheck git software-properties-common
# Prompt user to set up automatic security updates.
sudo apt-get install -y unattended-upgrades
sudo dpkg-reconfigure -plow unattended-upgrades
# Harden ssh
if determined-harden-ssh --user $usr
then
echo "dss" | sudo tee /home/.dssv1.7
else
"You cannot create root user and disable root login, that won't work... See 'dss help'"
exit
fi
elif test $log = 1
then
sudo cat /var/log/syslog
elif test $authlog = 1
then
sudo cat /var/log/auth.log
elif test $authlog = attacks
then
sudo cat /var/log/auth.log | grep "Invalid user"
sudo cat /var/log/auth.log | grep "Connection closed"
exit
elif test ! -z $blacklist
then
echo "Note to self: add blacklist function, empty elif is not allowed in BASH."
# Blacklist code
elif test $update = 1
then
# Update Linux and determined-setup
sudo apt-get update
sudo apt-get upgrade
curl -s "https://git.coolaj86.com/josh/raw/master/dss/setup.sh" | bash
elif test $clean = 1
then
# Update
sudo apt-get update
sudo apt-get upgrade
# Cleanup
sudo apt-get clean
sudo apt-get autoremove
elif test $mon = 1
then
cd /home
./sysmon.sh -- email $email
elif test $mon = 2
then
dss init
curl -sO "https://git.coolaj86.com/josh/raw/master/dss/sysmon.sh"
sudo mv sysmon.sh /home/.sysmon.sh
( sudo crontab -l ; echo "14 1 * * * /bin/bash -c "/home/.sysmon.sh --email $email"" &> "$logfile" ) | sudo crontab -
else
echo "dss $version"
echo "Usage: dss [OPTION]"
echo "You can run the following commands:"
echo "dss --clean # Update the server and cleanup uneeded files and programs. Use with caution."
echo "dss --log # Print the system log."
echo "dss --authlog 1 # Print the SSH authentication log. Use 'dss authlog attacks' to show attacks on your SSH server."
echo "dss --user USERNAME init # Setup server with server utilities and enable automatic security updates."
exit 1
fi