anleitung cccam mit fail2ban und firewallscript

#!/bin/sh
# script written by Gargi 2009 http://www.gargi.org

#needed modules
modprobe ip_conntrack_ftp

BLACKLIST=/usr/local/etc/blacklist.txt

#trigger for your ports
IN_ALLOWED_TCP="21 22 25 53 80 12000 11111"
OUT_ALLOWED_TCP="21 22 25 53 80 12000 11111" 
IN_ALLOWED_UDP="53 7878"
OUT_ALLOWED_UDP="53"
IN_ALLOWED_ICMP=" "
OUT_ALLOWED_IMCP=" "

case "$1" in
   start)

      # Stopping IP trap
      /etc/init.d/fail2ban stop
      echo "Stopping fail2ban IP trap ..."

      # Clear iptables
      iptables -F

      #Defaults
      iptables -P INPUT DROP
      iptables -P OUTPUT DROP
      iptables -P FORWARD DROP

      # loopback communication
      iptables -A INPUT -i lo -j ACCEPT
      iptables -A OUTPUT -o lo -j ACCEPT

      # persist on connections
      iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
      iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

      # Ban blacklisted IPs
      for x in `grep -v ^# $BLACKLIST | awk '{print $1}'`; do
        echo "Blocking $x..."
        iptables -A INPUT -t filter -s $x -j DROP
      done

      # TCP rules in
      for port in $IN_ALLOWED_TCP; do
        echo "Accepting TCP port $port"
        iptables -A INPUT -t filter -p tcp --dport $port -j ACCEPT
      done

      # TCP rules out
      for port in $OUT_ALLOWED_TCP; do
        echo "Allowing sending over TCP port $port"
        iptables -A OUTPUT -t filter -p tcp --dport $port -j ACCEPT
      done

      # UDP rules in
      for port in $IN_ALLOWED_UDP; do
        echo "Accepting UDP  port $port"
        iptables -A INPUT -t filter -p udp --dport $port -j ACCEPT
      done

      # UDP  rules out
      for port in $OUT_ALLOWED_UDP; do
        echo "Allowing sending over UDP port $port"
        iptables -A OUTPUT -t filter -p udp --dport $port -j ACCEPT
      done

      # ICMP rules in
      for port in $IN_ALLOWED_ICMP; do
        echo "Accepting ICMP  port $port"
        iptables -A INPUT -t filter -p icmp --dport $port -j ACCEPT
      done

      # ICMP rules out
      for port in $OUT_ALLOWED_ICMP; do
        echo "Allowing sending over ICMP port $port"
        iptables -A OUTPUT -t filter -p icmp --dport $port -j ACCEPT
      done

      # Dropping startup requests
      iptables -A INPUT -t filter -p tcp --syn -j DROP

      # Restarting IP trap
      /etc/init.d/fail2ban start
      echo "Fire up IP trap again ..."
      ;;
   stop)
      /etc/init.d/fail2ban stop
      iptables -F
      iptables -P INPUT ACCEPT
      iptables -P OUTPUT ACCEPT
      echo "Warning! Firewall is stopped, server is unprotected now!"
      ;;
   restart)
      $0 stop
      sleep 1
      $0 start
      ;;
      *)
      echo "Usage $0 {start|stop|restart}"
      ;;
esac