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jared

Member

From: Germany

Registered: 2012-01-16

Posts: 62

DNS_PROBE_FINISHED_NXDOMAIN in corporate shared Wifi network

I want to connect to the Internet in a corporate shared Wifi network (with a temporary username/password combination). When opening the browser, the Gnome "Hotspot Login" pop-up opens with the error message "Error resolving “guest.example.com”: Name or service not known".

On other devices the login form of guest.example.com opens (as expected).

In Chrome I get the message  "DNS_PROBE_FINISHED_NXDOMAIN" when opening https://guest.example.com/.

There are no DNS entries for guest.example.com:

$ host guest.example.com 8.8.4.4
Using domain server:
Name: 8.8.4.4
Address: 8.8.4.4#53
Aliases: 

This is my resolv.conf

$ less /etc/resolv.conf
# Generated by NetworkManager
search fritz.box
nameserver 192.168.178.1
nameserver 84.200.69.80
nameserver 8.8.8.8
nameserver 8.8.4.4

Does anyone have an idea how to resolve this?
Thank you for your help.

Last edited by jared (2019-05-13 10:30:57)

r0b0t

Member

From: /tmp

Registered: 2009-05-24

Posts: 505

Re: DNS_PROBE_FINISHED_NXDOMAIN in corporate shared Wifi network

That's a hotspot popup.
Is your default gateway as well 192.168.178.1 when you connect to this network?
If yes, then that's probably the same as the DNS (usually the DNS and default gateway on hotspot networks is pointing to the hotspot device).
Try resolving guest.example.com by using 192.168.178.1,it should work.

PS: that network administrator should be quite lazy to leave the "guest.example.com" as domain ... should be change to hotspot.corporate.something already...

Last edited by r0b0t (2019-05-13 13:25:00)

jared

Member

From: Germany

Registered: 2012-01-16

Posts: 62

Re: DNS_PROBE_FINISHED_NXDOMAIN in corporate shared Wifi network

Of course guest.example.com is just a placeholder for the actual address, which I do not want to reveal.

Trying to resolve guest.example.com with 192.168.178.1:

$ host guest.example.com 192.168.178.1
;; connection timed out; no servers could be reached
[user@host ~] 

So, I checked what my default gateway is:

$ ip route show
default via 192.168.188.1 dev wlp4s0 proto dhcp metric 600 
192.168.188.0/24 dev wlp4s0 proto kernel scope link src 192.168.188.241 metric 600 

Trying to resolve guest.example.com with the actual default gateway still results in the NXDOMAIN error.

$ host guest.example.com 192.168.188.1
Using domain server:
Name: 192.168.188.1
Address: 192.168.188.1#53
Aliases: 

Host guest.example.com not found: 3(NXDOMAIN)

r0b0t

Member

From: /tmp

Registered: 2009-05-24

Posts: 505

Re: DNS_PROBE_FINISHED_NXDOMAIN in corporate shared Wifi network

Well, in order to login to the hotspot portal you need to first resolve the domain of that portal and in order to do so you need a DNS server that actually points that domain to an IP.
The current DNS you are using isn't doing that job , try resolving the hotspot domain this time using your default gateway as DNS server, if that as well doesn't work then:
Ask the network administrator of that network for the details.

Last edited by r0b0t (2019-05-14 13:34:05)