Groups > linux.debian.user > #199715

Re: Strange Network Problem

From	David Christensen <dpchrist@holgerdanske.com>
Newsgroups	linux.debian.user
Subject	Re: Strange Network Problem
Date	2018-09-03 05:20 +0200
Message-ID	<wtNzb-1nI-1@gated-at.bofh.it> (permalink)
References	(3 earlier) <wtth7-6hl-1@gated-at.bofh.it> <wtzwd-1tV-1@gated-at.bofh.it> <wtzZf-1CH-1@gated-at.bofh.it> <wtFrX-4Rm-3@gated-at.bofh.it> <wtJ2x-76K-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On 09/02/2018 03:22 PM, mick crane wrote:
> On 2018-09-02 19:39, David Christensen wrote:
>> On 09/02/2018 05:48 AM, mick crane wrote:
>>> On 2018-09-02 13:16, Stephen P. Molnar wrote:
>>> <snippped>
>>>> The Firewall Passthrough is set to Allocation Mode set to 'Passthrough
>>>> with the Passthrough Mode set to 'DHCPS-dynamic '.
>>>>
>>>> It's my intention to change the Allocation Mode to 'Off', as soon as I
>>>> talk to AT&T Tech Support to make sure that doesn't mess things up.
>>>
>>> I'm not quite understanding how one PC is going straight through the 
>>> router to the ISP's network whereas you have other PCs with private 
>>> addresses.
>>>
>>> In my case as I understand it the ISP's router redirects from its 
>>> external network to internal private.
>>> PC with say 2 NICS one to the router and one to a switch whereby 
>>> connect the local machines using PC with 2 NICS as gateway doing 
>>> DHCP, firewall and all that.
>>>
>>> mick
>>
>>
>> https://en.wikipedia.org/wiki/Firewall_pinhole
>>
>> https://en.wikipedia.org/wiki/DMZ_(computing)
>>
>> https://en.wikipedia.org/wiki/DMZ_(computing)#DMZ_host
>>
>>
>> The OP appears to have the third option enabled on his gateway.
> 
> the ISP router maybe has NAT ( that's what it's called isn't it ) on 
> some of the ports that things with the private 192.168 block connect to 
> but seems to have a DMZ on one of the ports.
> I dunno
> 
> mick

https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol

https://en.wikipedia.org/wiki/Network_address_translation


Internet gateways typically provide DHCP and NAT/IP masquerading to 
hosts on a private network (e.g. 192.168.1.0/24).  DMZ hosts are treated 
specially.


David

Thread

Strange Network Problem "Stephen P. Molnar" <s.molnar@sbcglobal.net> - 2018-08-31 22:00 +0200
  Re: Strange Network Problem Dan Purgert <dan@djph.net> - 2018-08-31 23:40 +0200
  Re: Strange Network Problem David Christensen <dpchrist@holgerdanske.com> - 2018-09-01 04:50 +0200
    Re: Strange Network Problem "Stephen P. Molnar" <s.molnar@sbcglobal.net> - 2018-09-01 13:10 +0200
      Re: Strange Network Problem rhkramer@gmail.com - 2018-09-01 14:30 +0200
        Re: Strange Network Problem "Stephen P. Molnar" <s.molnar@sbcglobal.net> - 2018-09-01 18:10 +0200
          Re: Strange Network Problem rhkramer@gmail.com - 2018-09-01 20:00 +0200
      Re: Strange Network Problem David Christensen <dpchrist@holgerdanske.com> - 2018-09-02 07:40 +0200
        Re: Strange Network Problem "Stephen P. Molnar" <s.molnar@sbcglobal.net> - 2018-09-02 14:20 +0200
          Re: Strange Network Problem mick crane <mick.crane@gmail.com> - 2018-09-02 14:50 +0200
            Re: Strange Network Problem David Christensen <dpchrist@holgerdanske.com> - 2018-09-02 20:40 +0200
              Re: Strange Network Problem mick crane <mick.crane@gmail.com> - 2018-09-03 00:30 +0200
                Re: Strange Network Problem David Christensen <dpchrist@holgerdanske.com> - 2018-09-03 05:20 +0200
  Re: Strange Network Problem mick crane <mick.crane@gmail.com> - 2018-09-01 10:10 +0200

csiph-web