I have a problem

I have a firewall ASA5520, it have two zone, Server and ouside. previous I install SQLnet1 in Server, I permit port 1521 (SQLnet1), it is run OK. When I upgrade to SQLnet2 (port 1521, 1525, 1526), I permit port 1521, 1525, 1526 for SQLnet service but outside user is not buldt any session, telnet from outside to SQLnet2 Server port 1521, 1525, 1526 are OK.

anyone have help ?? Please sharing

thanks

ducnv