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On 2/21/20 12:20 PM, Bruce Bannerman wrote:
> Hi Tom,
>
> I have some partial improvement that may help.
>
>
> I have:
>
> * reset my nameserver to point each of my ‘servers’ to the IP
> address of the external interface of my external router/modem. * on
> the external router/modem, I configured WAN Port Forwarding to
> point to several of the same /28 subnet external addresses as per
> my previous emails: o http, https                   203.214.66.103
> o smtp                           203.214.66.100 o smtps, msa, imaps
> 203.214.66.104 * made no changes to my shorewall configuration. *
> made no changes to the network addresses or routing configuration
> of my servers. * made no changes to my web server, or reverse proxy
> server
configuration.
>
>
> When testing externally I can now access the website at
> www.foss4climate.org <http://www.foss4climate.org>. However, access
> is considerably slower than normal.
>
> NB: These tests were conducted soon after I made my nameserver
> changes. While my laptop’s nameserver could get the correct URL for
> the website. it had not picked up the correct URL for my mail
> servers. So ignore the mail related connections.
>
> Also note that my shorewall configuration does not take account of
> the router/modem's external interface, or IP address. It just
> accounts for the modem’s internal IP Address.
>
> Shorewall Dump for test 3 is attached.
>
> IP Addresses in test 3:
>
> 203.214.66.97external router/modem gateway (internal interface)
>
> 203.214.66.103Reverse Proxy Server 172.16.4.203Web Server
> 49.199.104.114Laptop’s updated IP address

Is seems to me that from the Shorewall box's point of view, this
configuration should be no difference that the one where DNS resolves
to the actual server addresses - by the time that packets reach the
Shorewall system, they should look the same. Are you still seeing
martian packets with this configuration?

- -Tom
- -- 
Tom Eastep        \ Q: What do you get when you cross a mobster
Shoreline,         \    with an international standard?
Washington, USA     \ A: Someone who makes you an offer you
http://shorewall.org \    can't understand
                      \________________________________________
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