Any idea on this one?
I have some wireless testing underway which seemed to be going without issue. All of a sudden, any browsing to .co.uk domains stopped working, followed by .com domains failing as well. A short while ago, .co.uk domains started working again but sporadically. If I change the rule permitting the dns traffic from either application dns or service udp 53 to anything for application default the issue resolves itself. Logs show the dns requests passing through the firewall without issue.
Has anyone seen this before?
Insure that you have logging enabled on the interzone-default policy so that you are getting the denied traffic. The way you describe the issue something is getting dropped and the likely cause of that is the security rulebase itself. You might also want to look at your threat logs to ensure the DNS requests aren't being dropped due to a threat identification.
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!