fail2ban ufw logwatch

fail2ban-ufw-logwatch.sh

#!/bin/bash
# Run as root

if [ "$#" -ne 1 ];
then
	echo "Usage: <script> <username>"
	exit 1
fi
USER=$1
EMAIL=your.email.address@gmail.com
PASSWORD=your.email.password
SMTP_RELAY=smtp.gmail.com

apt-get update -y
apt-get dist-upgrade -y
apt-get install -y screen vim ntp
sed -i.bak 's/prohibit-password/no/' /etc/ssh/sshd_config
groupadd sshlogin
usermod -a -G sshlogin $USER
echo "AllowGroups sshlogin" >> /etc/ssh/sshd_config
service ssh restart
echo "IPV6=no" >> /etc/ufw/ufw.conf
ufw allow OpenSSH
ufw --force enable

apt-get install fail2ban -y

cat << 'EOF'>> /etc/fail2ban/action.d/ufw-ssh.conf
[Definition]
actionstart =
actionstop =
actioncheck =
actionban = ufw insert 1 deny from <ip> to any app OpenSSH
actionunban = ufw delete deny from <ip> to any app OpenSSH
EOF

cat << 'EOF'>> /etc/fail2ban/filter.d/f2b-loop.conf
# Fail2Ban configuration file for subsequent bans
#
[INCLUDES]
before = common.conf
[Definition]
failregex = \]\s+Ban\s+<HOST>
ignoreregex = \[f2b-loop.*\]\s+Ban\s+<HOST>
#
# Author: Walter Heitman Jr.  http://blog.shanock.com
EOF

cat << 'EOF'>> /etc/fail2ban/jail.conf

[ufw-ssh]
enabled = true
banaction = ufw-ssh
port = 22
filter = sshd
logpath = /var/log/auth.log
maxretry = 3

[f2b-loop2]
enabled = true
filter = f2b-loop
bantime = 86400 ;1 day
findtime = 604800 ;1 week
logpath = /var/log/fail2ban.log
maxretry = 2

[f2b-loop3]
enabled = true
filter = f2b-loop
bantime = 604800 ;1 week
findtime = 2592000 ;1 month
logpath = /var/log/fail2ban.log
maxretry = 3

[f2b-loop4]
enabled = true
filter = f2b-loop
bantime = 2592000 ;1 month
findtime = 15552000 ;6 months
logpath = /var/log/fail2ban.log
maxretry = 6
EOF

service fail2ban restart

apt-get install postfix mailutils libsasl2-2 ca-certificates libsasl2-modules ca-certificates -y
sed -i.bak "s/relayhost =/relayhost = [$SMTP_RELAY]:587/" /etc/postfix/main.cf

cat << 'EOF'>> /etc/postfix/main.cf
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_tls_CAfile = /etc/postfix/cacert.pem
smtp_use_tls = yes
EOF

echo "[$SMTP_RELAY]:587    $EMAIL:$PASSWORD" >> /etc/postfix/sasl_passwd

chmod 400 /etc/postfix/sasl_passwd
postmap /etc/postfix/sasl_passwd
wget -O /etc/ssl/certs/Thawte_Premium_Server_CA.pem https://www.thawte.com/roots/thawte_Premium_Server_CA.pem
cat /etc/ssl/certs/Thawte_Premium_Server_CA.pem | tee -a /etc/postfix/cacert.pem
service postfix restart

apt-get install logwatch -y
mkdir /var/cache/logwatch
cp /usr/share/logwatch/default.conf/logwatch.conf /etc/logwatch/conf/
sed -i.bak "s/MailTo = root/MailTo = $EMAIL/" /etc/logwatch/conf/logwatch.conf
#sed -i 's/Detail = Low/Detail = Low/' /etc/logwatch/conf/logwatch.conf