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Author Topic: Port forwarding stopped working when I switched to PPPoE  (Read 6364 times)

FurryNutz

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #15 on: June 17, 2015, 02:15:06 PM »

Hope you can find something. Let us know how it does...
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PacketTracer

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #16 on: June 17, 2015, 04:22:49 PM »

Hi,

if your ISP has to use a CGN due to lack of global IPv4 addresses (as a result of IPv4 address exhaustion) he usually deploys addresses from within the so called  "Shared Address Space" to the WAN interfaces of his customers' CPEs (your DIR router). This is the address space 100.64.0.0/10 which is the short form for the range 100.64.0.0 - 100.127.255.255. Any ISP who is forced to use a CGN can use this address space, hence it isn't unique and cannot be routed within the Internet, similar to private addresses like 192.168.0.0/16 or 10.0.0.0/8. For details see RFC6424, RFC6269 and RFC6598.

ISPs who use CGN for IPv4 Internet access usually also provide IPv6 Internet access (e.g. DS-Lite), hence you could reach desired ports on your "static IP machine" via IPv6 from the Internet, given your DIR device also supports IPv6 and you get a fixed IPv6 address range for use inside your LAN (otherwise you would have to use some DynDNS solution).

Of course IPv6 is not yet widespread and commonly used by Internet users, hence nowadays reachability via IPv6 is of limited use only.

If you want your 'static IP machine' to be reached via IPv4 from the Internet, you would have to use some VPN service provider. You would install a VPN client software (e.g. OpenVPN) on your static IP machine and connect to the VPN ISP. He would use a public IP address either for provision to your site's internal tunnel endpoint or for use at his site to NAT and forward traffic through the tunnel to a private IPv4 address assigned to your site's internal tunnel endpoint. Of course this service is probably not for free, hence it could be more advantageous to change to an ISP who offers a real public IPv4 address to your router.

PT
« Last Edit: June 17, 2015, 10:29:50 PM by PacketTracer »
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FurryNutz

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #17 on: June 18, 2015, 06:59:56 AM »

Thanks for the additional information PT. Always appreciated.  ;D
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square_eyes

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #18 on: June 18, 2015, 03:49:23 PM »

Yes thanks both. Very helpful. A quick question... if I manage IPV6, what do you think the limitations of connecting will be? Will my web host be able to reach my MySQL database (currently using a PHP MySQL connect function). And will client users be able to connect to my Icecast server? Do they have to have IPV6 OS, modem/router, ISP and finally Icecast protocol all supporting IPV6 at once?
« Last Edit: June 18, 2015, 03:55:28 PM by square_eyes »
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PacketTracer

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #19 on: June 18, 2015, 04:35:55 PM »

Quote
if I manage IPV6, what do you think the limitations of connecting will be?
The most limiting factor is the limited number of Internet users using IPv6. If you can provide a service to the Internet via IPv6 only, only few people will be able to use it.
Quote
Will my web host be able to reach my MySQL database (currently using a PHP MySQL connect function)
Yes, if PHP and the PHP database driver for MySQL both support IPv6. But I don't know if they do.
Quote
And will client users be able to connect to my Icecast server?
Yes, if Icecast supports IPv6. But I don't know if it does. According to this presentation (slide 9/36) it should.
Quote
Do they have to have IPV6 OS, modem/router, ISP and finally Icecast protocol all supporting IPV6 at once?
Yes.
« Last Edit: June 18, 2015, 05:12:10 PM by PacketTracer »
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FurryNutz

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #20 on: June 29, 2015, 07:09:14 AM »

Any status on this?  ???
Yes thanks both. Very helpful. A quick question... if I manage IPV6, what do you think the limitations of connecting will be? Will my web host be able to reach my MySQL database (currently using a PHP MySQL connect function). And will client users be able to connect to my Icecast server? Do they have to have IPV6 OS, modem/router, ISP and finally Icecast protocol all supporting IPV6 at once?
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square_eyes

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Re: Port forwarding stopped working when I switched to PPPoE
« Reply #21 on: July 07, 2015, 01:39:03 AM »

Well, it took a couple of weeks of pain but I got connected with a new ISP and have a static IP. It costs a little more, but I immediately noticed an improvement in my connection, which was previously dropping out a lot.
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FurryNutz

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Re: Port forwarding stopped working when I switched to PPPoE (RESOLVED)
« Reply #22 on: July 07, 2015, 05:02:54 PM »

Sounds like this was an ex-ISP issue and the new ISP working how. Enjoy.  ;)
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