[CentOS] outside ssh connection from two different ISP's

Tue Nov 11 18:55:43 UTC 2014
Steve Clark <sclark at netwolves.com>

On 11/11/2014 12:44 PM, Les Mikesell wrote:
> On Tue, Nov 11, 2014 at 11:32 AM, Frank Cox <theatre at melvilletheatre.com> wrote:
>> On Tue, 11 Nov 2014 10:12:58 -0600
>> Les Mikesell wrote:
>>
>>> I think that is a different scenario, though.  Since the subnet
>>> addresses are the same for both routers, the OP must only have one
>>> NIC
>> Yes.
> Can you tell where the packets are getting lost?   Asymmetric routing
> is supposed to work per the IP design, but Red Hat thinks they know
> better and breaks it with their default settings:
> https://access.redhat.com/solutions/53031
>
> However, I thought that only applied to multiple NICs.   Can you tell
> if packets are coming in from the non-default router and the response
> sent to the default one?    And if so, can you traceroute to the
> address where the connection attempt is originating?
>
Natting is obviously involved on this end and if the incoming ssh session is originating thru a nat
then if the response packet doesn't have as a source what the original destination was the
nat on the ssh end won't be able to figure where the packet should go.

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Stephen Clark
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