1. 4. Is 6.
- Have you provided an external IP or hostname that can be accessed outside of your network?
- Do you have a firewall, have you opened it for our IP numbers?
- What port is SQL running on, and is this opened via the firewall? Please advise port number if not the default, 1433.
- Are external connections enabled in SQL Server?
- Is TCP/IP protocol enabled in SQL Server?
- Do you have multiple instances of SQL running on that box, in which case we have to specify the instance name in the connection?
- Can you connect externally (eg maybe tether to your phone and try connecting from outside your network in the same way we are)?