Port triggering is the name of a router configuration feature that allows to open an inbound port based on the outbound requests made by hosts placed inside a private network,
A private network is any connection within a specified network wherein restrictions are established to promote a secured environment. This type of network can be configured in such a way that devices outside the network cannot access it.
Only a selected set of devices can access this type of network depending on the settings encoded in the network routers and access points. On the other hand, a public network is defined as a network that anyone can freely connect to little or no restriction.
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