Which ports should I open [or close] to allow [or block] a particular program?(6.10) How can I configure my firewall or TCP/IP Filtering to allow Windows domain networking?
When troubleshooting any firewall or network filtering question, the first place to look is almost always the logs for the firewall. Trying to use a certain network application and then looking at the firewall logs should tell you whether the firewall is blocking the program and which port is being used.If you are having problems trying to IPsec filters, there is no logging possible. You may want to consider using a different way to filter network traffic that allows logging, such as either temporarily or permanently installing a third party hardware or software firewall to determine which ports are being used by your machine.Or, you could see which ports are being used by enabling the Network Monitor that comes with Windows 2000 / 2003 / XP / NT [try looking under Start, Settings, Control Panel, Add/Remove Programs, Add/Remove Windows Components, Management and Monitoring Tools]. Note that Network Monitor only shows communications to and from the computer where it is installed. [You c
