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To make your Synology even more secure, you can (and should if possible) restrict the access even further:1.
- Wired connections from their building(s); So it would be 18.##.0.0 where ## is the specific subnet number for the building.
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- Secure Wireless connections 18.189.0.0
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- VPN connections 18.101.0.0 & 18.100.0.0
Now that we’ve allowed anyone from MIT to access the server it is time to deny access to everyone else.
1) At the bottom of the Control Panel -> Firewall window there should be a line that starts with “If no rules are matched”
2) Click on "Deny access”.
3) Again, remember to save. Fortunately if you attempt to navigate away or close the window without saving, it will let you know again that changes are not saved. If it helps, get in the habit of just clicking on the "Save" button whenever you make any change.
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