On Wed, 19 May 2010, j.witvl...@mindef.nl wrote:
> Hi Jerry,
>
> Just a general remark.
> When deploying a firewall, it is advisable to have (atleast for input, better
> for all) to have the general policy set to drop, and only allow in what you
> expect to be coming in. If you put a "-j log" li
L
Subject: [CentOS] setup firewall with 3 nic cards
I have a centos box with 3 nics. eth0 is internal, eth1 is T1 data and eth2 is
cable data.
Everything is working on eth2 cable. External NAT is working just fine for eth2.
However external address 74.x.x.x on eth1 is not working.
Below is my iptables i
Dominik Zyla wrote:
>>> --
>>> Dominik Zyla
>> I read through the document. I dont see what I have done wrong still.
>>
>> Do my routing rules not look correct from my previous post?
>>
>> Sorry I am not catching on. Thanks for your assistance.
>
> Try to add iproute2 rules for eth1. You only pas
On Tue, May 11, 2010 at 09:24:53AM -0400, Jerry Geis wrote:
> >
> > You need to make source routing on 74.223.8.176 and eth1. Please, read
> > this: http://linux-ip.net/html/adv-multi-internet.html
> >
> > --
> > Dominik Zyla
> I read through the document. I dont see what I have done wrong still.
>
> You need to make source routing on 74.223.8.176 and eth1. Please, read
> this: http://linux-ip.net/html/adv-multi-internet.html
>
> --
> Dominik Zyla
I read through the document. I dont see what I have done wrong still.
Do my routing rules not look correct from my previous post?
Sorry I am n
On Mon, May 10, 2010 at 06:10:02PM -0400, Jerry Geis wrote:
> I have a centos box with 3 nics. eth0 is internal, eth1 is T1 data and eth2
> is cable data.
> Everything is working on eth2 cable. External NAT is working just fine for
> eth2.
> However external address 74.x.x.x on eth1 is not workin
I have a centos box with 3 nics. eth0 is internal, eth1 is T1 data and eth2 is
cable data.
Everything is working on eth2 cable. External NAT is working just fine for eth2.
However external address 74.x.x.x on eth1 is not working.
Below is my iptables information.
I setup eth1 same as eth2 just a
On Sat, May 08, 2010 at 02:46:17PM -0400, Jerry Geis wrote:
> Thanks for the "-t nat" suggetion.
>
> How does someone debug iptables?
> Seems like the local eth0 is working , eth2 is working but connections
> on eth1 dont seem to go anywhere.
> How can I tell what is happening for eth1 and iptabl
On Saturday 08 May 2010 14:46, Jerry Geis wrote:
> How does someone debug iptables?
> Seems like the local eth0 is working , eth2 is working but connections
> on eth1 dont seem to go anywhere.
> How can I tell what is happening for eth1 and iptables?
Maybe its your routing? Post both the fir
Thanks for the "-t nat" suggetion.
How does someone debug iptables?
Seems like the local eth0 is working , eth2 is working but connections
on eth1 dont seem to go anywhere.
How can I tell what is happening for eth1 and iptables?
Thanks,
Jerry
___
Cent
On 8 May 2010 14:12, Jerry Geis wrote:
> then I do iptables -L again and the rule is not there. Am I missing
> something?
Try iptables -t nat -L, though you may want to use the -n option too.
>From the iptables manpage[1]:
"-L, --list [chain]
List all rules in the selected chain. If no chain is
I am trying to setup some rules on a box with 3 nic cards. Two internet
connections and one office connection.
eth0 is office
eth1 is internet T1
eth2 is internet Cable
when I do "iptables -F" then iptables -L everything is gone as it should be.
Then I do
iptables -t nat -A PREROUTING -p tcp -d
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