[Cialug] Ip forward question

[albus]

Okay. that why. It's working now.

----- Original Message ----- 
From: "Dave Weis" <djweis at internetsolver.com>
To: "Central Iowa Linux Users Group" <cialug at cialug.org>
Sent: Monday, December 14, 2009 3:54 PM
Subject: Re: [Cialug] Ip forward question


> 
> Files in /proc aren't real on-disk files, it's a way to pass commands to 
> the kernel and read the state of things from the kernel. That's why they 
> go back to the default after a reboot. The sysctl route works because a 
> program reads that file on boot and makes the same changes as echo 1 does.
> 
> albus wrote:
>> That at least leaves it turned on when I restart the network.
>> 
>> 
>> ----- Original Message ----- 
>> From: "Tom Pohl" <tom at tcpconsulting.com>
>> To: "Central Iowa Linux Users Group" <cialug at cialug.org>
>> Sent: Monday, December 14, 2009 3:39 PM
>> Subject: Re: [Cialug] Ip forward question
>> 
>> 
>>> You can always change the default in sysctl.conf
>>> net.ipv4.conf.default.proxy_arp = 1
>>>
>>> BUT that may have unintended consequences depending on if you want to do proxy_arp on all interfaces or just your select 2!
>>>
>>> -Tom
>>>
>>>
>>> On Dec 14, 2009, at 3:34 PM, albus wrote:
>>>
>>>> I've got a new proxy arp firewall setup with CentOS 5.4
>>>>
>>>> It has only 2 nics.
>>>>
>>>> I've run 
>>>> echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp
>>>> echo 1 > /proc/sys/net/ipv4/conf/eth1/proxy_arp
>>>>
>>>> And it all works. However every time I service network restart or reboot it drops forwarding
>>>> until I re-issue the 2 echo lines.
>>>>
>>>> Something is over writing it. From what I've Googled it's a problem others have had as well. But
>>>> I haven't run in to how to make it permanant.
>>>>
>>>> I'm about to just include the 2 echo lines in /etc/rc.local 
>>>> But I'd rather know where to make it stick instead.
>>>>
>>>> Any ideas?
>>>>
>>>> _______________________________________________
>>>> Cialug mailing list
>>>> Cialug at cialug.org
>>>> http://cialug.org/mailman/listinfo/cialug
>>> _______________________________________________
>>> Cialug mailing list
>>> Cialug at cialug.org
>>> http://cialug.org/mailman/listinfo/cialug
>>>
>>>
>> 
>> _______________________________________________
>> Cialug mailing list
>> Cialug at cialug.org
>> http://cialug.org/mailman/listinfo/cialug
> 
> 
> 
> 
> -- 
> Dave Weis
> 515-224-9229
> djweis at internetsolver.com
> http://www.internetsolver.com/
> Please check out our Complete Support Service
> http://www.internetsolver.com/completesupport/
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug
> 
>