I'm trying to access a remote SQL server (7.0) from behind Windows NT ISA. I created protocol definitions and rules to open port 1433 for tcp inbound and outbound, and 1434 for udp send/receive. Client and SQL are configured to use tcp/ip. Everything works when proxy is turned off,or if I open all ports, but with packet filtering enabled, I get "connection failed" error from ODBC Data Source Administrator. What am I missing?