Hello, a problem has been found in the latest version of the firewall module 1047 in certain system configurations in spite of intensive pre-release testing when the module had been distributed to several dozens thousands users with test mode enabled and subsequent staggered update to other users. Known symptoms are the loss of Internet connectivity or inability to obtain an IP address from the DHCP server. If you're experiencing these problems after the recent update of the firewall module, please provide us the following information: 1, version of ESS (e.g. ESS 32-bit, 4.0.437) 2, version and platform of the operating system, including installed service packs (e.g. Vista 32-bit, SP1) Get a list of blocked connections by enabling the "Log all blocked connections" option in Setup -> Personal firewall -> IDS and advanced options. With this option enabled, reproduce the problem and disable logging. If you see "No usable rule found" for port 53, create a bi-directional rule for all applications with remote port 53 allowed. If you're having this problem, check if you have the "DNS Poisoning attack detection" enabled in the IDS section (should be enabled) and let us know if it's actually enabled if you're having problems with Internet connectivity. If the computer cannot obtain an IP address, you should see the communication between x.x.x.x:67 and 0.0.0.0:68 blocked in the firewall log. Creating a rule for inbound communication with local port 68 and remote port 67 should work. Enclosed find an xml file with predefined rules that should work as an interim solution. If you have the firewall set to automatic mode, switch it to automatic mode with exceptions so that the rules are actually applied.