Linux Firewall: Simple Shell Script To Stop and Flush All Iptables Rules

by Vivek Gite on April 24, 2008

#!/bin/bash
# Linux Firewall: Simple Shell Script To Stop and Flush All Iptables Rules
# Some Linux distros like Debian do not have /etc/init.d/iptables stop script
# This can be also called from cron job if you are testing new firewall on
# remote box to avoid lock out
# -------------------------------------------------------------------------
# Copyright (c) 2004 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT

#!/bin/bash

# Linux Firewall: Simple Shell Script To Stop and Flush All Iptables Rules

# Some Linux distros like Debian do not have /etc/init.d/iptables stop script

# This can be also called from cron job if you are testing new firewall on

# remote box to avoid lock out

# -------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# -------------------------------------------------------------------------

iptables -F

iptables -X

iptables -t nat -F

iptables -t nat -X

iptables -t mangle -F

iptables -t mangle -X

iptables -P INPUT ACCEPT

iptables -P OUTPUT ACCEPT

iptables -P FORWARD ACCEPT

Tagged as: bash linux, firewall iptables, flush firewall script, iptables command, linux distros, linux firewall, shell script, stop firewall script

{ 6 comments… add one }

Bekir YAPAR July 8, 2010, 8:37 am
Thx. For help. İt’s helpfull for us.
Reply Link
John Jones May 6, 2010, 4:34 pm
Thanks guy this was really help full, Linux rules
Reply Link
Fred November 26, 2009, 3:01 pm
Silly question, but where should I save this script to in Debian? And how can I run it without having to mention ./location/location/script all the time?
Reply Link
- Vivek Gite November 28, 2009, 9:29 pm
  You can store it in your own ~/bin directory and add to the PATH in ~/.bash_profile:
```
mkdir ~/bin
cp script ~/bin
cd ~/bin
chmod +x script
echo "export PATH=$PATH:~/bin" >> ~/.bash_profile
export PATH=$PATH:~/bin
cd
sudo ~/script
```
  Reply Link
Sandeep February 18, 2009, 4:02 am
Hi Vivek,
Could you please post a script on iptables rules for a webserver so that instead of APF or CSF you can just run this script daily or as per scheduled with a cron job.
Thank you
Reply Link
- Vivek Gite February 28, 2009, 6:05 pm
  See this script
  Reply Link

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