On Tue, Mar 25, 2003 at 08:41:59AM +0530, Binand Raj S. wrote:

> On Mon, Mar 24, 2003 at 09:24:46AM +0530, Dileep M. Kumar wrote:
> #####################################################################
> ## Masquerade everything out eth0 for all machines
> #####################################################################
> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

>>Note that this is the worst way of masquerading private traffic onto a
>>public network. I personally do not recommend setting up NAT this way.
>>(Hint: Where are you checking the source of the packet?)

Yes. That is  not the firewall script which I use.  See Rusty's 3 line
MASQ script. It is not for direct use.

> Warning: If your private network contains any vital information, think
> carefully in  terms of SECURITY before implementing  IP Masquerade. By
> default, IP MASQ  becomes a GATEWAY for you to  get onto the Internet,
> but it also  can allow someone from the Internet  to possibly get into
> your internal network.

>>Huh? What nonsense. Can you tell us how that is possible??

Better ask Mr. David A. Ranch <[EMAIL PROTECTED]>
http://tldp.org/HOWTO/IP-Masquerade-HOWTO/ipmasq-compiling3.0.html

Regards
-- 
 .''`.     Dileep M. Kumar <[EMAIL PROTECTED]>
: :'  :    http://www.kumarayil.net
`. `'`
  `-  Debian GNU/Linux - Choice of the Freedom Lovers


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