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howto start with gateway / router / masquerading
Post 302342948 by Zykl0n-B on Tuesday 11th of August 2009 06:16:01 AM
08-11-2009
Code:
Second, I understand that this means no limitation, no control and no secutity at all in the network traffic
The only device that is able to interconnect two logical networks is a router, so you want to interconnect three networks, then what you need is a router.
With iptables you can easily set up a router/firewall device for your network. It's included with Linux, so you don't have to pay or download anything at all.
What i understand of your needs is to set cassiopeia host to do something like this:
So, if i'm right you'll need three network interfaces and the problem is solved, here is how you must set iptables to make this work:
Code:
echo 1 >/proc/sys/net/ipv4/ip_forward echo 0 >/proc/sys/net/ipv4/conf/all/send_redirecs iptables -t nat -F iptables -F iptables -X iptables -Z iptables -A INPUT ACCEPT iptables -A OUTPUT ACCEPT iptables -A FORWARD ACCEPT iptables -t nat -A POSTROUTING -s 172.16.199.0/24 -o eth0 -j MASQUERADE iptables -t nat -A POSTROUTING -s 172.16.70.0/24 -o eth1 -j MASQUERADE iptables -t nat -A POSTROUTING -s 192.168.1.0/25 -o eth2 -j MASQUERADE
best regards
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LEARN ABOUT OPENSOLARIS
ip6tables-save
IPTABLES-SAVE(8) iptables 1.6.1 IPTABLES-SAVE(8) NAME
iptables-save -- dump iptables rules to stdout ip6tables-save -- dump iptables rules to stdout SYNOPSIS
iptables-save [-M modprobe] [-c] [-t table] ip6tables-save [-M modprobe] [-c] [-t table] DESCRIPTION
iptables-save and ip6tables-save are used to dump the contents of IP or IPv6 Table in easily parseable format to STDOUT. Use I/O-redirect- ion provided by your shell to write to a file. -M, --modprobe modprobe_program Specify the path to the modprobe program. By default, iptables-save will inspect /proc/sys/kernel/modprobe to determine the exe- cutable's path. -c, --counters include the current values of all packet and byte counters in the output -t, --table tablename restrict output to only one table. If not specified, output includes all available tables. BUGS
None known as of iptables-1.2.1 release AUTHORS
Harald Welte <laforge@gnumonks.org> Rusty Russell <rusty@rustcorp.com.au> Andras Kis-Szabo <kisza@sch.bme.hu> contributed ip6tables-save. SEE ALSO
iptables-apply(8),iptables-restore(8), iptables(8) The iptables-HOWTO, which details more iptables usage, the NAT-HOWTO, which details NAT, and the netfilter-hacking-HOWTO which details the internals. iptables 1.6.1 IPTABLES-SAVE(8)