subject: DNS works sometimes, but sometimes it doesn?t. What can we Do ? [print this page] If you?re not sure whether this circumstance relates to your problems, try using Network Monitor to capture DNStraffic on both sides of your firewall. If you?re not seeing identical traffic on both sides of the firewall, the firewall is obviously blocking some DNS traffic, most likely large replies. To play it safe, I recommend opening your network to incoming DNS traffic on both UDP and TCP ports 53
DNS works sometimes, but sometimes it doesn?t. What can we Do ?
