Are there any ESS firewall brainiacs out there that can help me figure out this strange one? - I have downloaded the latest build of ESS Business Edition as of today (31 Jan 0 and installed it onto 4 computers. - All computers are Windows XP with SP2, except for 1 computer that is Windows 2000 Server. - A Windows XP computer 'hosts' the internet connection because the ISDN modem connects to it directly via USB (no Ethernet available). I will refer to this computer as the 'internet host' computer. Therefore this computer is connected to two subnets: 192.168.0.x, which is the LAN, and 144.x.x.x, which is the ISDN modem's public internet IP address. The 192.168.0.x subnet is set to "Allow sharing" and the other is set to "Strict". - The Internet connection wouldn't share with other computers on the local area network and some other things also wouldn't work until I switched to Interactive mode, which consequently asked questions to which I used to create the necessary rules. - There is one program, called Online update for RMS, on the Windows 2000 Server computer which is unable to complete all necessary update steps despite the fact that it has successful access to both internet and email. - If I disable the ESS firewall on the 'internet host' computer, then the Online update program on the Windows 2000 Server computer works. If the firewall is enabled, then the Online update program doesn't work. - The ESS firewall on the 'internet host' computer doesn't log anything that tells me what is being blocked, despite having "Log all blocked connections". - I have all options checked under the heading, "Allowed services". - I have tried unchecking all "block" rules in the advanced setup for the ESS firewall on the 'internet host' computer but still the issue persists. - I have shared the Program Files directory on the Windows 2000 Server where the Online update program resides, then added multiple rules to the ESS firewall on the 'internet host' computer to allow all protocols on all ports, etc, but still the issue persists. Short from using Wireshark, can anyone please help me? - I've tried plugging the ISDN modem into the Windows 2000 Server computer but it doesn't play nicely. - ADSL broadband internet isn't an option because of a line issue.