NAT with Multiple Public IPs

NAT with Multiple Public IPs

[hareram]

Hi all

iam trying to build more than 1000 users network

now days i see some problem with yahoo

if using one IP source NAT, yahoo blocking that IP due to some problems come 
with that IP

so how can make NAT using 255 IP
with 1000users

this should do randomly using 255 IP;s

any examples

hare 

Re: NAT with Multiple Public IPs

[John A. Sullivan III]

On Fri, 2005-11-11 at 23:21 +0530, hareram wrote:
> Hi all
> 
> iam trying to build more than 1000 users network
> 
> now days i see some problem with yahoo
> 
> if using one IP source NAT, yahoo blocking that IP due to some problems come 
> with that IP
> 
> so how can make NAT using 255 IP
> with 1000users
> 
> this should do randomly using 255 IP;s
> 
> any examples
> 
> hare 
> 
> 
> 
One can NAT to a range of IP addresses.  That used to produce a rough
round robin distribution of addresses; I'm not sure if that is still the
case.  Thus you would have:

iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source
1.1.1.1-1.1.1.254 
or something similar.

Although it is not complete, the ISCS network security management
project (http://iscs.sourceforge.net) automates the creation of even the
most complex NAT including many to some, some to many, overlapping and
nested NAT.  Good luck - John
-- 
John A. Sullivan III
Open Source Development Corporation
+1 207-985-7880
jsullivan@opensourcedevel.com

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