If you have an issue connecting to any server, you should check your firewall settings first. To find out for sure, you can try disabling your firewall for a moment and seeing if you can connect. If you can, you need to allow Scorched 3D access to the internet and/or open the following ports:
80 TCP: For server browsing (outgoing connections only)
27270 TCP: For game messages (outgoing connections only). This may differ depending on the game port the server is running on
27271 UDP: For server browsing (outgoing connections only). This may differ depending on the game port the server is running on.
80 TCP: For server browsing registration (outgoing connections only).
27270 TCP: For game messages (incoming connections only). This can be changed using the server settings.
27271 UDP: For server browsing (incoming connections only). When the server port is changed will always be the server port + 1.
If you start your own server and other people are having problems connecting, try another port such as 2727 or 27271.
If you're having problems with someone connecting to you or you can't connect to any servers and you're running ZoneAlarm 5 or 6, you'll need to open ports for Scorched 3D in ZA's settings. To do this open up ZoneAlarm and click on the Firewall option on the left. Then, under "Internet Zone Security," click "Custom." Click the "Internet Zone" tab and scroll down until you find the port options and add the ports that Scorched uses as shown in the image below.
Click Apply and then OK. You're done.
Note: If you're connected to the internet through a Network connection, you'll also need to open these same ports on the host computer (the one that's directly connected to the internet).
If you're on an ICS (Internet Connection Sharing) connection and the computer that dials in has Windows XP and Scorched 3D is being used through the Network, you'll need to open Scorched 3D's ports in Windows Firewall. Even if you have it disabled, Windows Firewall is still active for an ICS connection. To open ports, right click on your internet connection icon (shown next to the clock in the System Tray) and select "Change Windows Firewall settings." Select the Advanced tab and then select your internet connection in the connections list. Next, click the "Settings" button and then the "Add..." button at the bottom. In the description field, give it an obvious name such as "Scorched TCP." In the "Name or IP..." field, put in the Network IP address (192.168.XXX.XXX) of the computer you want to run Scorched 3D on (you can find this address by going to Start/Run, type CMD, then type ipconfig on the blocked computer). In the next two "Port" fields, put 27270 (default). Now click OK and click the "Add..." button again. This time, call the description something like "Scorched UDP." In the next field, add the same IP address and select the UDP radio button. In both port fields, input 27271. Now click "OK" three times and you're done.