Created
October 22, 2013 15:02
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Iptables default rules
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#!/bin/bash | |
# | |
# iptables example configuration script | |
# | |
# Flush all current rules from iptables | |
# | |
iptables -F | |
# | |
# Allow SSH connections on tcp port 22 | |
# This is essential when working on remote servers via SSH to prevent locking yourself out of the system | |
# | |
iptables -A INPUT -p tcp --dport 22 -j ACCEPT | |
# Open port for specific IP | |
#iptables -A INPUT -s 192.168.32.2 -p tcp --dport 3306 -j ACCEPT | |
#iptables -A INPUT -s 178.167.xxx.xxx -p tcp --dport 3306 -j ACCEPT | |
# | |
# Set default policies for INPUT, FORWARD and OUTPUT chains | |
# | |
iptables -P INPUT DROP | |
iptables -P FORWARD DROP | |
iptables -P OUTPUT ACCEPT | |
# | |
# Set access for localhost | |
# | |
iptables -A INPUT -i lo -j ACCEPT | |
# | |
# Accept packets belonging to established and related connections | |
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iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT | |
# | |
# Save settings | |
# | |
/sbin/service iptables save | |
# | |
# List rules | |
# | |
iptables -L -v |
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