Beantwoord

Does KPN whitelist server addresses?

  • 30 januari 2019
  • 8 reacties
  • 198 keer bekeken

I help manage a website that uses openid for login - but visitors to my site that are on KPN are not able to connect to the openid server.

We think KPN may be blocking requests for open and public access at https://openid.youngliving.com .

Anyone who tries to reach https://openid.youngliving.com on a KPN network gets a connection timeout error.

My question is KPN whitelist server addresses? Or can someone at KPN look into why KPN customers can not connect https://openid.youngliving.com ?

If the KPN customer uses a TOR browser they are able to connect.
If they are on any other KPN network they are able to connect.



Any help or advice would be very much appreciated!
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Beste antwoord door wjb 31 januari 2019, 20:24

I think the problem lies in the used DNS server
The IP address for openid.youngliving.com is 172.16.11.77 on the DNS server from KPN and 192.81.120.77 on Google, OpenDNS and many other DNS servers.

DNS server from Cloudflare:


DNS server from KPN:

Bekijk origineel

8 reacties

Reputatie 7
This is not only happening on the network of KPN but also (for example) on the 4G network of T-Mobile.
So I wonder if this has anything to do with "whitelisting" of server addresses as that then needs to be done by other providers as well.
WJB - Thank you for your response. Are you seeing a screen like the attached on T-mobile? or are you getting the timeout error message?



Reputatie 7

Just to rule it out -- do you have KPN Veilig​ ​installed on your T-Mobile phone?
thank you!
Reputatie 7
Just to rule it out -- do you have KPN Veilig​ ​installed on your T-Mobile phone?
thank you!

No.
Reputatie 6
Badge +7
The site loads normally on both VodafoneNL 4G en T-MobileNL 4G mobile networks for me. The IP address I get for it is 192.81.120.77
Reputatie 7
I think the problem lies in the used DNS server
The IP address for openid.youngliving.com is 172.16.11.77 on the DNS server from KPN and 192.81.120.77 on Google, OpenDNS and many other DNS servers.

DNS server from Cloudflare:


DNS server from KPN:

Reputatie 5
Badge +6
Works perfectly on Telfort (KPN)
There might be a routing issue from certain ip ranges

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