[Cerowrt-devel] double_nat_question

[Fred Stratton]

The cerowrt box should be after the ADSL gateway. Use the cerowrt firewall. Bridge the ADSL gateway, or, if the ISP prohibits that, create a DMZ with cerowrt as the item in it.


On 28 Aug 2013, at 09:44, Oliver Niesner <oliver.niesner at gmail.com> wrote:

> 
> 
> Hi all,
> 
> I hope someone could help me, it seems that i doesn't get it or misinterpret
> something :-/
> 
> I want to get rid of double NAT in my small network at home, but it seems it
> only works, if i use an extra iptables MASQUERADE rule on my pc which does all
> the firewalling dhcp etc..
> 
> My setup:	^
> 		|internet
> 		|					
> -------------------------			------------------------
> |			 |			| firewall pc		|
> | dsl-router		 |			|dhcp, small		|
> |(NAT, no CEROwrt!	 |----------eth0--------|webserver etc.		|
> |ip, static=192.168.0.199|	192.168.0.1	|---------------|--------
> |------------------------					|
> 								|
> 								eth1,
> 								192.168.1.1
> 								|
> 								|
> 				--------------------------------|
> 				|	WAN=192.168.1.86	|
> 		WLAN------------|	CEROwrt			|
> 				---------------------------------
> 
> 
> This setup works fine, but only when i do MASQUERADE on eth0, on my firewall pc!
> I thought it must be possible, that only my dsl-router is doing the NAT and
> everything else is routed inside the private net!
> (the necessary routes are set, every machine could ping each other)
> What i'm missing?
> 
> thx,
> 
> Oliver
> 
> 
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