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Recommend a firewall for windows
(lemy.nl)
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A firewall blocks in and outbound ports. Windows Advanced Firewall already does this.
If you want more fine-grained control, look to your router. I use a Netgate pfSense rackmount appliance. You can do the same with an OpenSense or pfSense router running on a toaster.
Be glad to help if you have questions!
Tell me, through which program can I install programs with the iso extension?
PfSense has an iso extension. I tried the WindowsCE utility, but only achieved that the files contained in the iso are unpacked as a regular archive.