Router Firewall Configuration
Applies To: Windows SBS 2008
Important
It is recommended that you open ports on the router only if they support the requirements of your business.
Required ports for server services and applications
The following table lists ports that must be open on your router firewall to allow specific types of data through the firewall. The IP address of the server that is running Windows SBS 2008 is the forwarding address that you use when you set up the port.
| Service or Application | Port Number | Purpose |
|---|---|---|
SMTP |
25 |
Simple Mail Transfer Protocol (SMTP) is a TCP/IP protocol for sending messages from one computer to another on a network. This protocol is used on the Internet to route e-mail messages. |
HTTP |
80 |
Hypertext Transfer Protocol (HTTP) is a protocol for carrying requests from a browser to a Web server and for transporting pages from Web servers back to the requesting browser. |
HTTPS |
443 |
Secure Hypertext Transfer Protocol (HTTPS) is a version of HTTP that encrypts data by using Secure Sockets Layer (SSL). |
HTTPS |
987 |
This Secure Hypertext Transfer Protocol (HTTPS) port makes Windows SharePoint® Services viewable through Remote Web Workplace. |
Additional ports for server services and applications
The following table lists additional ports that you must open only if you enable the Windows SBS 2008 service or application. The IP address of the server that is running Windows SBS 2008 is the forwarding address that you use when you set up the port.
| Service or Application | Port Number | Purpose |
|---|---|---|
FTP Data FTP Control |
20 21 |
File Transfer Protocol (FTP) is the standard Internet protocol for downloading or transferring files from one computer to another. Both ports are used for FTP and must be open for FTP to work. |
VPN |
1723 |
A virtual private network (VPN) is a network that connects one or more computers to a large network, such as a business network, by using the Internet. A VPN is encrypted, which helps ensure that only authorized people can access it. |
RDP |
3389 |
Microsoft Remote Desktop Protocol (RDP) is a standard set of communication rules that enables you to use your computer to connect to a computer that is located elsewhere. |
Ports required by installed applications and services
If you install line-of-business applications or other applications and services, you may need to open additional ports to allow specific types of data through the router firewall. You must get the port information from the documentation for the application or service or from a list of well-known ports.