Hi I have pubblished my sql server but after the pubblish ,only the isa server pc can telnet the port 1433 other client can't telnet the port of my sql server . I have verified the checklist for pubblish an internal server and it is ok . I have only changed many tcp paramenters (from a guide to hardering a windows 2000 server)such hkey_local_machine\system\currentcontrolset\services\ tcpip\parameters value (synAttackProtect) tcpip\parameters value (TcpMaxHalopen) tcpip\parameters value (TcpMaxhalfOpenRetried) tcpip\parameters value (EnablePNTUDiscovery) tcpip\parameters value (KeepAliveTime) tcpip\parameters value (EnableICMPRedirect) Can anyone give me some suggestion about my problem ?? In the same server i have publish owa and it's work ok !! Thank you .