troubleshooting dns resolution

Newbie892100 Lv1Posted 18 May 2020 19:34

Dears,

On an already configuring fw, today I got problems resolving url, It seems port 53 is blocked and LAN clients are not able to resolve URLs.

In order to debug the issue If I configured a SNAT permitting all protocols from LAN to WAN zone and I'm trying to verify directly form the firewall

However, When I go to System > Troubleshooting > Tools and issue a traceroute command,
the command is successfull when I use an ip adress (which means connection is up)
traceroute 1.1.1.1

if I use an url the command fails
traceroute www.google.com

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