Apple - Are Apsd, Ntpd, MDNSResponder, Trustd, Netbiosd Necessary For MacOS Functioning?


Answer :

apsd - Used for FaceTime push notifications

ntpd - Used to synchronize clock

mDNSResponder - Part of the Bonjour protocol, used to scan your network for other Bonjour-enabled devices (printers, computers, etc...)

trustd - Used for validating SSL certificates

netbiosd - Used when interacting with Microsoft shared drives

This is all normal activity. However, if you are worried about security, you can disable the services you don't plan on using.

Edit: You might not want to disable ntpd and trustd as they are necessary for basic functionality such as browsing websites.


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