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TPlink router and no-ip DDNS account

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NY

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Feb 5, 2022, 6:04:05 PM2/5/22
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I have a TPLink TD-W9980 router. I have created a no-ip dynamic DNS account
of the form <my-hostname>.ddns.net, with my email address as the login user
ID and a suitable password: the username/password are the ones which allow
me to log into the no-ip.com website. On https://my.noip.com/account I have
created a username, since that was required to complete the setup. I have
replied to the link in the email that I received, to confirm that I own the
email account.

The DDNS redirection works: I can browse to <my-hostname>ddns.net:<port>
where I have set up port forwarding in my router to redirect traffic on that
port to a port on a private LAN IP.

But... when I set up the DDNS server on the TPlink router, the status
remains as "Connecting" instead of (presumably) changing to "Connected" to
indicate success. I presume if my ISP happens to allocate me a different IP
address when I re-connect in the future, the no-ip redirection isn't being
updated while the status is "ConnetING" so eventually things will break,

Can I check I'm filling the config details on the router's Dynamic DNS page
correctly:

Service Provider = www.no-ip.com
Domain name = <my-hostname>.ddns.net
Username=<my email address> (I've also tried the Username)
Password=<my password>
Enable DDNS=ticked
Save button

The username/password are those which allow me to log into www.no-ip.com.
I've confirmed that the site will accept either the email address or the
chosen username (plus the same password).


What am I doing wrong?


I can't use no-ip's Dynamic Update Client because my network is
double-NATed: I've got a router which translates to 192.168.x.y and then a
Linksys Velop mesh network with the primary node connected by Ethernet to
the router; the Linksys is configured to hand out addresses in 10.120.x.y
subnet. I don't want to tinker with that (eg by turning off NAT on the
router) unless I really have to. That's why the ability to run a domain
update client on the router is the ideal solution.

NY

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Feb 6, 2022, 3:36:26 AM2/6/22
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On 06/02/2022 01:52, Anthony R. Gold wrote:
> On Sat, 5 Feb 2022 23:03:04 -0000, "NY" <m...@privacy.invalid> wrote:
>
>> Can I check I'm filling the config details on the router's Dynamic DNS page
>> correctly:
>>
>> Service Provider = www.no-ip.com
>
> I suggest: no-ip.com

The service provider setting in the router's Dynamic DNS page is a
pre-defined list from a drop-down: a choice between www.no-ip.com or
www.ddns.com. So there's no way to set it to no-ip.com without the www.


>> Domain name = <my-hostname>.ddns.net
>> Username=<my email address> (I've also tried the Username)
>
> I suggest Username
>
>> Password=<my password>
>> Enable DDNS=ticked
>> Save button
>>
>> The username/password are those which allow me to log into www.no-ip.com.
>> I've confirmed that the site will accept either the email address or the
>> chosen username (plus the same password).
>
> The service claims to require a refresh only every 30 days but I suggest you
> do it every 2 weeks because their expiry system appears to be flakey, but
> you will get an email warning before they expire and delete your host name.

NY

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Feb 6, 2022, 4:50:37 AM2/6/22
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"Anthony R. Gold" <not-fo...@ahjg.co.uk> wrote in message
news:7t9uvgtsir7bgapcr...@4ax.com...
> The service claims to require a refresh only every 30 days but I suggest
> you
> do it every 2 weeks because their expiry system appears to be flakey, but
> you will get an email warning before they expire and delete your host
> name.

And surely I needs the IP address renewing a *lot* more frequently than once
every 30 days, because the router could reboot or disconnect/reconnect at
any time, potentially making the ISP allocate a new WAN IP, and the DDNS
name needs to point to the new IP as soon as this happens. I wonder what the
polling period of the DDNS client in the TPLink router is.

Graham J

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Feb 6, 2022, 4:57:13 AM2/6/22
to
NY wrote:
> On 06/02/2022 01:52, Anthony R. Gold wrote:
>> On Sat, 5 Feb 2022 23:03:04 -0000, "NY" <m...@privacy.invalid> wrote:
>>
>>> Can I check I'm filling the config details on the router's Dynamic
>>> DNS page correctly:

[snip]

I used this a long time ago with several different types of router, but
mainly Vigor 2600 and 2800 series.

Service Provider = www.no-ip.com
- from drop-down list, so limited by router manufacturer
- this appears as "NO-IP.Com Free (www.no-ip.com)" in the drop-down box

Domain name = <my-hostname>.ddns.net

Login name = <email address>
- some routers limit the number of characters you can use here,
- the Vigor is maximum 64

Password = <my password>

The Vigor has "View Log" and "Force Update" buttons, so you can test it
and see what goes wrong.

I have several old Vigor routers you could try - where are you?



--
Graham J

Graham J

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Feb 6, 2022, 5:07:38 AM2/6/22
to
I suspect the DDNS client looks at the status of the internet connection
and reports to the DDNS server whenever it sees the connection go up.

As far as I understand it the router cannot get a new WAN IP address
without logging into the ISP's RADIUS server, and it does this as part
of the PPPOE or PPPoA process once the modem achieves sync. In the case
of an Ethernet router and an external modem the router sends PPPoE
enquiries out of its WAN port at reqular intervals (perhaps every few
seconds) until it gets a reply.

--
Graham J
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