We are using Comodo Internet Security Premium version 22.214.171.12476. Recently we were recommended to close all unused ports in each PC; we only needed the ports opened such as:
- Port 53 (for DNS)
- Port 80 (for Http)
- Port 443 (for SSL secure browsing)
- Port 8080 (for secondary port)
And close all other ports as follows:
- Block 0-52
- Block 53-79
- Block 81-443
- Block 444-8079
- Block 8081-65535
That seems to make sense but we have these questions about apps used in some computers, such as:
What do EE recommend as to the open and closed ports?
Is the recommendation of closing non-used ports a good one?
Finally, based on the list of apps, what ports do these apps uses so we can open them?