Forum Discussion
LA_Medina_32319
Jan 09, 2018Nimbostratus
DNS not reachable via UDP/Port 53
We have recently added an external DNS lookup server address in our Link controller under the System --> configuration --> device --> dns --> DNS Lookup Server List
However, when we do a normal nsl...
youssef1
Jan 09, 2018Cumulonimbus
Hello,
Regarding your last comment "Port 53 seems to be open as well". It's normal because telnet use TCP only.
Can you tell me if you have a Fw between your LC and your ISP. Because as you explain you can reach the google dns trough TCP but not UDP so I suppose that rooting is working fine and this problem can come maybe from perimeter security...
Regards,
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