olemus
võrguturbe meetod, mis kitsendab virtuaalse kohtvõrgu
kommutaatorite mingite portide suhtlussuundi,
muutes need pordid privaatportideks
= a network security technique that restricts the communication direction of some ports of the virtual LAN switches, making those ports private ports

ülevaateid
https://www.utepo.net/article/detail/319.html

https://en.wikipedia.org/wiki/Private_VLAN

https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Restricting_Traffic_with_Isolated_Switch_Ports

https://tools.ietf.org/html/rfc5517

https://www.youtube.com/watch?v=tbG9YboATvA