All Virtual Servers by default have their firewall enabled. We also
have our own firewall in front of the Virtual Servers but that firewall
is setup to allow most inbound traffic towards your servers. The
firewall on your server such as the "Windows Firewall" is set to be much
more restrictive to what it allows by default. You can then edit your
own firewall to allow access for whatever ports you specify. Basically
our firewall won't prevent you from opening up any needed ports.
Windows Server 2008 R2
Opening a Port on the Windows Firewall
Below are the steps to open up a port on the Windows Firewall.
Click on the START button click on Administrative Tools
Select Windows Firewall with Advanced Security
Select Inbound then 'New Rule' from the actions pane
Choose a rule type, Port, Program, Predefined (GRE) or a custom rule
Select which port or ports and protocol the rule applies too.
Select the action in which you want to apply to the port or program you can block, allow or allow if it is secure.
Select the profile in which the rule applies too, our VPS's are set to the Domain profile by default which means a rule that applies only to Public or Private will not apply to your externally facing VPS network. We suggest that you select a combination of Domain and private or public or all three.
Name the rule, your new rule can be called anything it is best to name it something you are able to identify easily.
What do I do if a rule was already created?
If a firewall rule was already created by the system their is little you can do to change that rule through the Windows Firewall with Advanced Security console. You may want to change the profile that the rule affects if this is the case you can change the profile through a netsh command here is an example of this.
Open a Administrative Command Prompt
Type the following
netsh advfirewall set rule name="the exact name of the rule" profile=the current profile dir=in new profile=the new pofile
eg netsh advfirewall set rule name="Post-Office Protocol Version 3 (POP3)" profile=public dir=in new profile=domain