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Operating Systems Linux Red Hat How to route multiple IP addresses with IPTABLE command? Post 302579634 by Dhruvak on Tuesday 6th of December 2011 08:55:13 AM
Old 12-06-2011
How to route multiple IP addresses with IPTABLE command?

Hi,
We have a router and devices for testing. We route devices with below command

Code:
 
iptables -t nat -A PREROUTING -p tcp -d 0/0 --dport 80 -s 10.111.111.22 -j DNAT --to-destination 10.13.0.16:3128

where 10.111.111.22 is device IP. and 10.13.0.16 is our Linux box machine.
Likewise we are having 20 devices so 20 different IPs.

So, the issue is each time we need to copy paste above command with different device IP address.

My question is will someone please point me to command where I can have 5-6 device ip addresses together so, I can route 5-6 devices symultaniously?

I tried below but failed
Code:
iptables -t nat -A PREROUTING -p tcp -d 0/0 --dport 80 -s 10.111.111.22,10.111.111.23 -j DNAT --to-destination 10.13.0.16:3128
 
iptables -t nat -A PREROUTING -p tcp -d 0/0 --dport 80 -source 10.111.111.22,10.111.111.23 -j DNAT --to-destination 10.13.0.16:3128
 
iptables -t nat -A PREROUTING -p tcp -d 0/0 --dport 80 -source 10.111.111.22 10.111.111.23 -j DNAT --to-destination 10.13.0.16:3128

Please help me in this case.

Moderator's Comments:
Mod Comment Please use code tags!

Last edited by zaxxon; 12-06-2011 at 10:08 AM.. Reason: code tags, see PM
 

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defaultrouter(4)                                                   File Formats                                                   defaultrouter(4)

NAME
defaultrouter - configuration file for default router(s) SYNOPSIS
/etc/defaultrouter DESCRIPTION
The /etc/defaultrouter file specifies a IPv4 host's default router(s). The format of the file is as follows: IP_address ... The /etc/defaultrouter file can contain the IP addresses or hostnames of one or more default routers, with each entry on its own line. If you use hostnames, each hostname must also be listed in the local /etc/hosts file, because no name services are running at the time that defaultrouter is read. Lines beginning with the ``#'' character are treated as comments. The default routes listed in this file replace those added by the kernel during diskless booting. An empty /etc/defaultrouter file will cause the default route added by the kernel to be deleted. Use of a default route, whether received from a DHCP server or from /etc/defaultrouter, prevents a machine from acting as an IPv4 router. You can use routeadm(1M) to override this behavior. FILES
/etc/defaultrouter Configuration file containing the hostnames or IP addresses of one or more default routers. SEE ALSO
in.rdisc(1M), in.routed(1M), routeadm(1M), hosts(4) SunOS 5.10 17 Aug 2004 defaultrouter(4)
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