"Non-existent domain" error with split tunnel for "Both Network traffic and DNS"

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"Non-existent domain" error with split tunnel for "Both Network traffic and DNS"

L3 Networker

Dear community!

 

I have configured split tunnel for both Both Network traffic and DNS and it works fine. However while doing nslookups I get the  "Non-existent domain" error 

 

According to the document down below, this can be fixed by setting "Resolve "All" FQDNs Using DNS Servers Assigned by the Tunnel (Windows Only)" option to NO. This option is already configured but we are seeing the issue anyways.
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA14u000000HB0rCAG&lang=en_US%E2%80%A...

 

Any idea why this is happening?

 

Thank you!

3 REPLIES 3

Cyber Elite
Cyber Elite

Hi @Carracido ,

 

More information is needed to assist.  Are you doing an nslookup on the FQDN?  If not, have you populated the DNS Suffix field in the GlobalProtect gateway Agent > Network Services?

 

Thanks,

 

Tom

Help the community: Like helpful comments and mark solutions.

Hello @TomYoung 

 

Yes, I´m doing nslookup on the fqdn.

 

Regards.

Cyber Elite
Cyber Elite

By default "Resolve "All" FQDNs Using DNS Servers Assigned by the Tunnel (Windows Only)" is enabled.

This means that nslookup works only towards DNS servers that are configured in GlobalProtect gateway config.

If you set this option to NO then by default it can take 24 hours before GP agent refreshed config and starts permitting DNS requests against other DNS servers.

You can refresh manually from GP agent menu by choosing "Refresh Connection".

Enterprise Architect, Security @ Cloud Carib Ltd
Palo Alto Networks certified from 2011
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