#!/bin/bash
I=iptables
group_trusted="192.168.101.0/24"
#               Dennis
group_ssh="212.120.89.188"
group_ftp="212.120.89.188"
group_samba="212.120.89.188"
$I -P INPUT ACCEPT
echo 1
$I -P OUTPUT ACCEPT
echo 2
$I -P FORWARD ACCEPT
echo 3
$I -F
echo 4
$I -X
echo 5
if [ "$1" = "stop" ]
then
        echo "Firewall completely flushed! Now running without firewall!"
        exit 0
fi

$I -A INPUT -i lo -j ACCEPT
echo 6
$I -A INPUT -m state --state INVALID -j DROP
echo 7
$I -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
echo 7
$I -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
echo 7
$I -N trusted
echo 8
for line in ${group_trusted} ; do
  $I -A trusted -s $line -j ACCEPT
  echo "adding $line to trusted"
done
echo 9
$I -N ssh
for line in ${group_ssh} ; do
  $I -A ssh -s $line -j ACCEPT
  echo "adding $line to ssh"
done
$I -A ssh -j trusted
echo 10
$I -N ftp
for line in ${group_ftp} ; do
  $I -A ftp -s $line -j ACCEPT
  echo "adding $line to ftp"
done
$I -A ftp -j trusted
echo 11
$I -N samba
for line in ${group_samba} ; do
  $I -A samba -s $line -j ACCEPT
  echo "adding $line to samba"
done
$I -A samba -j trusted
echo 12
#####  Enable the rules for every group

#ssh
$I -A INPUT -m state --state NEW -p TCP --dport 22 -j ssh
echo 13
$I -A INPUT -m state --state NEW -p TCP --dport 21 -j ftp
echo 14
#samba
$I -A INPUT -m state --state NEW -p UDP --dport 137 -j samba
echo 15
$I -A INPUT -m state --state NEW -p UDP --dport 138 -j samba
echo 16
$I -A INPUT -m state --state NEW -p TCP --dport 139 -j samba
echo 17
$I -A INPUT -m state --state NEW -p TCP --dport 445 -j samba
echo 18
$I -A INPUT -p TCP --dport 80 -j ACCEPT
echo 19
$I -A INPUT -p TCP --dport 113 -j REJECT
echo 20
$I -A INPUT -p TCP --dport 10022 -j ACCEPT
echo 21
$I -P INPUT DROP
echo 22
$I -P OUTPUT ACCEPT
echo 23
$I -P FORWARD DROP
echo 24



--------------------------



1
2
3
4
5
6
iptables: No chain/target/match by that name
7
iptables: No chain/target/match by that name
7
8
adding 192.168.101.0/24 to trusted
9
adding 212.120.89.188 to ssh
10
adding 212.120.89.188 to ftp
11
adding 212.120.89.188 to samba
12
iptables: No chain/target/match by that name
13
iptables: No chain/target/match by that name
14
iptables: No chain/target/match by that name
15
iptables: No chain/target/match by that name
16
iptables: No chain/target/match by that name
17
iptables: No chain/target/match by that name
18
19
20
21
22
23
24