Note: You may need to update your firewall to allow access to https://isc.sans.edu.
Configure the ISC Ports feed as follows:
In Asset Manager, go to Settings > Integrations > SANS, and click Configure.
Turn on the Enabled toggle to activate the integration.
Enter a Polling Interval to indicate the time that should elapse between fetching the latest feed data. Input 24 to poll daily, input 12 to poll twice a day, and so on.
Click Test to confirm that the feed is configured correctly.