So many thing need to be configured such as networking activity like remote administrator and network tools and programming.
First Assume your using the Windows7 firewall.
Make sure you do all this as admin
First you need to get into the firewall in control panel. On the side there is "advanced settings" click it.
Now you want to select "inbound rules" and then click "new rule..." on the right hand side.
Select port and add the port details. You probably want to repeat the process for "outbound rules" also making sure you select "allow the connection".
Second Assume your using the Windows XP firewall.
1.Open the 'Control Panel' and select 'Windows Firewall'
2.Click on the 'Exceptions' tab
3.Click on the 'Add Port...' button
4.Enter a name for this exception such as 'GFI FAXmaker'
5.Under the Port Number enter '25' and ensure that 'TCP' is selected
6.Click 'OK' to save changes
7.Ensure that the new exception created is checked under 'Programs and Services'
8. Click 'OK' to close the configuration