06-11-2014 10:58 AM
I would like to check a few DNS issues I'm seeing on the management port.
I had hoped to find nslookup in the CLI, but it isn't there.
Is there something equivalent ?
06-11-2014 12:43 PM
There is no nslookup command, but you can do a simple ping. Even if the destination doesn't allow ping, the DNS lookup will still happen. The command to ping from the management interface is:
ping host www.example.com
You will want to ensure that you are not using a service route though, as the DNS requests are all sent using that service route. The service routes are configured at Device > Setup > Services > Service Route Configuration. If you do have a service route set, your ping and all DNS lookups where the firewall initiates connections (such as updates.paloaltonetworks.com) will use that route.
Hope this helps,
06-11-2014 12:47 PM
As per my knowledge, PAN CLI does have an option like "nslookup" in windows. But, you can verify the DNS functionality, wthere FQDN resolves to a valid IP address from the DNS server.
admin> ping host google.com
PING google.com (22.214.171.124) 56(84) bytes of data. >>>>>>>>>>>>>>>>>>>>> Configured DNS server resolved the FQDN address to IP address.
64 bytes from dfw06s41-in-f6.1e100.net (126.96.36.199): icmp_seq=1 ttl=55 time=40.6 ms
64 bytes from dfw06s41-in-f6.1e100.net (188.8.131.52): icmp_seq=2 ttl=55 time=37.1 ms
64 bytes from dfw06s41-in-f6.1e100.net (184.108.40.206): icmp_seq=3 ttl=55 time=39.4 ms
05-17-2021 08:58 AM
If you HTTPS to the firewall and create an Address as an FQDN instead of an IP, there is a clickable RESOLVE link next to where you place the DNS name. That will resolve and list all the IP addresses it pulled from DNS. This is better than a PING test as PING will only show the first of many IPs. Using the FQDN address object you can see the full list.
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