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#!/bin/bash | |
set -o errexit | |
# Aliases | |
IPT=/sbin/iptables | |
printf 'Cleaning the environment... ' | |
# Delete the PROXY chain | |
($IPT --table nat --delete-chain PROXY || true) 2> /dev/null # ignore error | |
echo "Done" | |
# Create new chain | |
$IPT --table nat -N PROXY | |
# Any tcp connection made by group `socksified' or user root should be redirected. | |
$IPT --table nat --append OUTPUT --protocol tcp --match owner ! --uid-owner redsocks --jump PROXY | |
# Ignore LANs and some other reserved addresses. | |
# See http://en.wikipedia.org/wiki/Reserved_IP_addresses#Reserved_IPv4_addresses | |
# and http://tools.ietf.org/html/rfc5735 for full list of reserved networks. | |
noproxy=( | |
'0.0.0.0/8' | |
'10.0.0.0/8' | |
'127.0.0.0/8' | |
'169.254.0.0/16' | |
'172.16.0.0/12' | |
'192.168.0.0/16' | |
'224.0.0.0/4' | |
'240.0.0.0/4' | |
# add any other local address here | |
) | |
for ip in "${noproxy[@]}"; do | |
echo "Skipping proxy for ${ip}" | |
$IPT --table nat --append PROXY -d ${ip} --jump RETURN | |
done | |
# Log everything that goes through the PROXY chain to syslog | |
$IPT --table nat --append PROXY --protocol tcp --jump LOG --log-level debug --log-prefix "[PROXY]" | |
# Anything else should be redirected to port 8080 | |
$IPT --table nat --append PROXY --protocol tcp --jump REDIRECT --to-ports 8080 | |
# printf "\n\nHere are your new iptables rules:\n" | |
# $IPT --table nat -nvL PROXY --line-numbers | |
echo "Dont forget to configure redsocks" |
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