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How to open port 873 on Windows 2008 Server

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How to open port 873 on Windows 2008 Server

Postby guest » Sat Jun 14, 2008 12:35 pm

You would like to open port 873 on Windows 2008 Server for a service.

Problem Analyze:
Based on my research, this issue can occur if one of the following is true:

1. Windows Firewall policy is not configured correctly.
2. there service that is listening on 873 is not installed on Server.

Regarding your concerns:

1. Windows 2008 not listening on port 873:
Windows will not list a port as listening if there is no application
listening on it. For example, if you close IIS services on Server, it will
stop listening on port 80, though it is allowed on Firewall and Router.

2. Port Scan from LAN show port 873 as closed/not listening.
If Windows Firewall is not allowing this port, or there is no
service/application listening on this port, you will get this result. Based
on the information you provided, that there is no process listening on 873,
I believe this is the root cause.

3. How to open a port in Windows Firewall:
There are several methods you can use to open a port in Windows Firewall:

----- Add An exception in Windows Firewall console.
----- Add inbound/outbound rules in Windows advanced Firewall console
----- use command netsh firewall add portopening tcp 873 873 Enable ALL

To check whether the port is allowed or not, please use this command: netsh
firewall show portopening

You may refer to these links for more information about configuring Windows

How to Configure Windows Firewall on a Single Computer
http://www.microsoft.com/technet/securi ... indowsxp/c

Deploying Windows Firewall Settings for Microsoft Windows XP with Service
Pack 2 (with Group Policy)
http://www.microsoft.com/technet/prodte ... set/wfsp2w

Windows Firewall
http://www.microsoft.com/windows/produc ... tails/fire
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