msc) to enable or disable Windows services.
Custom
Use Custom if you want to make a rule that involves both a specific
application and a specific port simultaneously, something you can??™t
do with the Windows Firewall window in Control Panel.
4. Click Next when you??™re done; what happens next depends on the type
of rule you??™re creating.
If you chose Program or Custom in step 3, the subsequent Program
step lets you associate the rule with all programs, or a specific .exe file.
If you chose Port or Custom in step 3, the subsequent Protocol and
Ports step asks you to specify a port number. Most of the time, you??™ll
want to select TCP from the Protocol type list and Specific Ports from
the Local port list. Below Local port, type one or more port numbers
used by the connection to be governed by your new rule; see
Appendix B for more information on TCP/IP ports.
5. Next, the Scope step gives you the opportunity to fine-tune the rule by
providing the IP addresses of the PCs involved in the connection. The
local IP address (the top box) is basically your PC, so in most cases,
you??™ll want to leave the Any IPaddress default selected. But below, you
can select These IPaddresses and then add the addresses of specific
remote PCs; that way, you can be extra careful and, say, open a port
only when a trusted PC wants to connect.
6. The Action step is more or less self-explanatory. By default, Windows
Firewall blocks all inbound data except when a rule instructs it to let the
data through, so typically you??™ll want to choose Allow the connection
here.
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