[vox-tech] 2 Network cards not getting along

[Alex Mandel]

No it is set to 0. Should it be on? This system is not a router, I'm not
really clear on what else would happen if I were to turn it on.

Thanks,
Alex

Brian Lavender wrote:
> Do you have forwarding turned on?
> echo "1" > /proc/sys/net/ipv4/ip_forward
> 
> On Mon, Dec 14, 2009 at 12:34:27PM -0800, Alex Mandel wrote:
>> This is probably a strange use case, and I'm aware it's not optimum but
>> I need to get it to work while a more long term solution is discussed.
>>
>> I have a server
>> It has 2 network cards
>> card 1 is serving a website to the world and is on subnet 1
>> card 2 is serving a database, and samba share and is on subnet 2
>>
>> While card 2 is turned on, people on subnet 2 are unable to see the
>> website, though the rest of the world can. It doesn't matter if they use
>> the domain name, the subnet 1 ip or the subnet 2 ip address, they all
>> timeout. If I turn card 2 off everybody can see the website.
>>
>> So how do I even begin to troubleshoot this issue?
>>
>> In the long run this could all be avoided by relaxing the firewall rules
>>  to allow both subnets access to the various ports it needs, but for
>> whatever reason there is a hardware firewall on subnet 1 that I have 0
>> control over. It's removal has been requested but that might take a few
>> months. Besides that I can't think of a reason why the setup wouldn't work.
>>
>> (Server is Apache 2.2, Ubuntu 8.04)
>> subnet 1 has no domain controller
>> subnet 2 has a windows domain controller (probably Win Server 2008,
>> maybe still 2003)
>>
>> Thanks,
>> Alex