[Cialug] Ip forward question

[albus]

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?
>> 
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