#!/bin/bash
# IPtables and TCP Congestion Controllers Modules by CCNA HUB - Imad Daou
# The following IPtables Modules optimized specially for a Single Host or Server.
# It doesn't work on Centralized Firewall or Router unless you modify the rules below.
# For more information: https://www.ccnahub.com/linux-courses/

MODPROBE="/sbin/modprobe"

if [[ $EUID -ne 0 ]]
then
   echo "This script must be run as root. Exiting." 
   exit 1
fi
echo
echo -e " Loading Required IPtables Modules. Please wait... \n"
depmod -a
echo "----------------------------------------------------------------------------"
echo -en "ip_tables, "
$MODPROBE ip_tables
echo $?

echo -en "ip_conntrack, "
$MODPROBE ip_conntrack
echo $?

echo -en "ip_conntrack_ftp, "
$MODPROBE ip_conntrack_ftp
echo $?

echo -en "ip_conntrack_irc, "
$MODPROBE ip_conntrack_irc
echo $?

#echo -en "iptables_module, "
#$MODPROBE iptables_module
#echo $?

echo -en "ipt_helper, "
$MODPROBE ipt_helper
echo $?

echo -en "ipt_TCPMSS, "
$MODPROBE ipt_TCPMSS
echo $?

echo -en "ipt_tcpmss, "
$MODPROBE ipt_tcpmss
echo $?

echo -en "ipt_LOG, "
$MODPROBE ipt_LOG
echo $?

echo -en "ipt_TOS, "
$MODPROBE ipt_TOS
echo $?

echo -en "ipt_tos, "
$MODPROBE ipt_tos
echo $?

echo -en "ipt_length, "
$MODPROBE ipt_length
echo $?

echo -en "iptable_mangle, "
$MODPROBE iptable_mangle
echo $?

echo -en "ipt_ttl, "
$MODPROBE ipt_ttl
echo $?

#echo -en "ipt_SAME, "
#$MODPROBE ipt_SAME
#echo $?

echo -en "ipt_REJECT, "
$MODPROBE ipt_REJECT
echo $?

echo -en "ipt_ttl, "
$MODPROBE ipt_ttl
echo $?

echo -en "ipt_owner, "
$MODPROBE ipt_owner
echo $?

echo -en "ip_tables, "
$MODPROBE ip_tables
echo $?

echo -en "ipt_mark, "
$MODPROBE ipt_mark
echo $?

#echo -en "ipt_state/xt_state, "
#$MODPROBE ipt_state/xt_state
#echo $?

#echo -en "ipt_limit/xt_limit, "
#$MODPROBE ipt_limit/xt_limit
#echo $?

echo -en "ipt_recent, "
$MODPROBE ipt_recent
echo $?

echo -en "xt_connlimit, "
$MODPROBE xt_connlimit
echo $?

#echo -en "ipt_owner/xt_owner, "
#$MODPROBE ipt_owner/xt_owner
#echo $?

#echo -en "ipt_multiport/xt_multiport, "
#$MODPROBE ipt_multiport/xt_multiport
#echo $?

echo -en "ipt_hashlimit, "
$MODPROBE ipt_hashlimit
echo $?

echo -en "xt_hashlimit, "
$MODPROBE xt_hashlimit
echo $?

#echo -en "iptable_nat, "
#$MODPROBE iptable_nat
#echo $?

#echo -en "ip_nat_ftp, "
#$MODPROBE ip_nat_ftp
#echo $?

#echo -en "ip_nat_irc, "
#$MODPROBE ip_nat_irc

#echo -en "iptable_nat/ipt_DNAT, "
#$MODPROBE iptable_nat/ipt_DNAT
#echo $?

#echo -en "iptable_nat/ipt_REDIRECT, "
#$MODPROBE iptable_nat/ipt_REDIRECT
#echo $?

#echo -en "ipt_REDIRECT, "
#$MODPROBE ipt_REDIRECT
#echo $?

echo "----------------------------------------------------------------------------"

echo -e "   Loading TCP Congestion Controllers \n"

echo -en "tcp_htcp, "
$MODPROBE tcp_htcp
echo $?

echo -en "tcp_cubic, "
$MODPROBE tcp_cubic
echo $?

echo "----------------------------------------------------------------------------"
echo -e "Done! If any of the Modules not found, please let your VPS provider know. \n"