08-20-2002
Do you mean that your Unix host has 3 LAN connections (interfaces) and acts as a hub ?? If yes, then NAT is available between the interfaces so long as each is defined with a different subnet address. Best Linux example is the use of 'ipchains' for configuring simple NATing rules (IP Masquerade) and configuring your host to act as a router between the subnets. See
http://www.tldp.org/HOWTO/IP-Masquerade-HOWTO/
If you have a seperate piece of network equipment, i.e. a hub, then I would suspect that the answer is no. You will need to purchase a piece of equipment with NAT capability, i.e. a router.
Leigh
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LEARN ABOUT LINUX
ip6tables-save
IP6TABLES-SAVE(8) IP6TABLES-SAVE(8)
NAME
ip6tables-save -- dump iptables rules to stdout
SYNOPSIS
ip6tables-save [-M modprobe] [-c] [-t table
DESCRIPTION
ip6tables-save is used to dump the contents of an IPv6 Table in easily parseable format to STDOUT. Use I/O-redirection provided by your
shell to write to a file.
-M 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>
Andras Kis-Szabo <kisza@sch.bme.hu>
SEE ALSO
ip6tables-restore(8), ip6tables(8)
The iptables-HOWTO, which details more iptables usage, the NAT-HOWTO, which details NAT, and the netfilter-hacking-HOWTO which details the
internals.
Jan 30, 2002 IP6TABLES-SAVE(8)