Forum Discussion

Aspirant

Mar 28, 2020

Solved

Remote management still doesn't work

)Due the coronavirus issue I need the remote management of my old but still good D7800 I've read several topis about it so I did everything properly I suppose: update the latest firmaware, factory...

antinode
Apr 01, 2020
> o My router (ADVANCED HOME) says my IP is 100.124.135.89, the same in
> the Android Genie App

>    Or, plug it/them in at: https://whois.arin.net/ yourself.

   Did you try that? It's a shared/private address. More important,
it's different from your apparent public address:

> I get 77.32.x.y

>    Or, plug it/them in at: https://whois.arin.net/ yourself.

   Did you try that? It's a public address. But it's not the (WAN)
address of your router.

> I tryed usign both the IP to reach the router 100.124.135.89:8483
> 77.32.24.191:8483 but they don't work

   That's right. As explained before, "100.124.135.89" is a private
address, so can't work from the outside world. "77.32.x.y" is a public
address, but it's the address of a router at your ISP, not the address
of your D7800.

> Strangely I can get the router and the NAS, using their own app like
> genie or dsfinder

   A device (router, NAS box, ...) which creates an _outgoing_
connection to some cloud server somewhere can be contacted by going
through that cloud server. Using a web browser to create an _incoming_
connection directly to the router requires that the router have a public
IP address.

> > You might talk to your ISP, and ask about getting a public address.
> This may be the answer

   Yup.

Spiderpan

Aspirant

Mar 29, 2020

so:

the FW is the last V1.0.1.56
Yes i'm using dynamicdns by mynetgear
it works, I tried from another pc with nslookup and with a mobile, connected via 4G they both resolved the correct IP
As before I tired to manage the router with a laptop or mobile not connected to the D7800 network

Tomorrow I'll try doing another factory reset but this time I'll restore it manually (I'm taking screenshoots of the configuration)
thanks for now. I'll let you know if it works

antinode

Guru

Mar 29, 2020

> o Yes i'm using dynamicdns by mynetgear
> o it works, I tried from another pc with nslookup and with a mobile,
> connected via 4G they both resolved the correct IP

How, exactly, did you establish what's "the correct IP"? What's the
top half of it ("a.b" out of "a.b.c.d")?

Does your "the correct IP" match the D7800 WAN/Internet IP address?
ADVANCED > ADVANCED Home : Internet Port : Internet IP Address

The potential threat:

https://en.wikipedia.org/wiki/Carrier-grade_NAT

Spiderpan
Aspirant
Mar 31, 2020
You were right antinode I didn't know the issues behind CGN
The IP from the router was different from the one returned from the no-ip service and the Synology ddns

anyway this time I tried both of the IP but none is working :smileyfrustrated:
xx.xx.xxx.xxxx:8483
yyy.yyy.yyy.yy:8483

Somehow I managed to get the genie app working.
it sounds strange but It can help others:
I connected the genie app (android) through the same LAN, I set on the remote management (In the app I mean, even though it was already set in the router configuration). After that the app works even in remote.

I solved only half of the problem, for now
- antinode
  Guru
  Mar 31, 2020
  > xx.xx.xxx.xxxx:8483
  > yyy.yyy.yyy.yy:8483
  
  > [...] What's the top half of it ("a.b" out of "a.b.c.d")?
  
     Still a mystery.
  
     Or, plug it/them in at: https://whois.arin.net/ yourself.
  
  > [...] I tried both of the IP but none is working
  
     A private address can't work from the outside world. The public
  address can't work from the outside world if it's not your router's
  WAN/Internet address. You might talk to your ISP, and ask about getting
  a public address.
  - Spiderpan
    Aspirant
    Apr 01, 2020
    > [...] What's the top half of it ("a.b" out of "a.b.c.d")?
    I'm sorry but I can't get it, my english has become rusty :smileysad:
    I'll try to explain better; for example:
    My router (ADVANCED HOME) says my IP is 100.124.135.89, the same in the Android Genie App
    but when I resolve my two DDNS services xxxxx.mynetgear.com or xxxxx.synology.me , I get 77.32.24.191
    I checket it with my.noip.com synology.com dnsqueries dnscecker and even nslookup in the linux terminal
    I tryed usign both the IP to reach the router 100.124.135.89:8483 77.32.24.191:8483 but they don't work
    I hope I answered your question
    
    Strangely I can get the router and the NAS, using their own app like genie or dsfinder
    
    >A private address can't work from the outside world. The public address can't work from the outside world if it's not your router's WAN/Internet address.
    > You might talk to your ISP, and ask about getting a public address.
    This may be the answer