In Threat Prevention > Settings > General tic:
- Enable Threat Prevention
- Drop high-risk packets automatically
- Security priority mode
Monitored Interfaces tic all
..> Device
tic all
..> Notification tic
Enable event notification, customize here and [Advanced] as preferred
In Safe Access > Security > Network Protection
tic all and grab an AI key from Google (granted, this is the low-budget approach).
..> Exception List add your known & needed
some SSL verifiers you may want to include:
- rapidssl.com
- geotrust.com
- thawte.com
- digicert.com
Assuming the firewall(s) on your router(s) and NAS's are setup, go to Security Advisor > Overview, click [Scan], review, then click [View Results].
I believe that's about all of it using the Synology provided tools. YMMV and others may have more or better ideas.
Oops, forgot this: Security Advisor > Advanced > Security Baseline > select [Customize checklist] >
tic all
..> Scan Schedule > tic Enable regular scan schedule and pick your choice, e.g., Daily at HH:MM