DNSproxy resolve fail msgs - only I am not using this feature!

Reply
L1 Bithead

Re: DNSproxy resolve fail msgs - only I am not using this feature!

 I think I figured this out.

 

There is a default internal dns-proxy object called mgmt-obj that works to resolve hostnames when you check the "resolve hostname" checkbox in the various monitor logs.  To do this it does a reverse dns lookup using the arpa database - and sends a dns query for a pointer record of the domain name.

 

ie - if one of your devices/apps was reaching out to a.b.c.d and your "monitor traffic" gui pane had the resolve hostname checkbox enabled - to facilitate this, the PA device  would send out a dns query for a pointer record of the domain name d.c.b.a.in-addr.arpa to your specified dns servers. If this resolve fails ... it logs it in the system log as type: dnsproxy, severity: informational, event: resolve-fail, object: mgmt-obj and provides a description of the failed reverse lookup attempt

Highlighted
L0 Member

Re: DNSproxy resolve fail msgs - only I am not using this feature!

I actually created a support ticket for this issue.  8.1 was when I first saw the issue as well.  I have been told that this is a know bug with 8.1 and it will be addressed with 8.1.1.  8.1.1 should be available around May 3rd.  Here is the bug id for this issue:

PAN-94640

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!

The Live Community thanks you for your participation!