A portal is a doorway, a gate, or some type of entrance to allow someone or something to move from one place to another freely. Some doorways are small, and some are large enough for people to move through. There are entranceways of light, and on the opposite side, there are dark ones.
This blog post includes guidelines on how to close demonic portals and is also applicable to the closure of all types of dark entranceways.
Demonic gateways have increased in the past few years. Participation in certain types of media, especially pornography, Satanic ritual, fighting, and contention, is why demonic portals have increased.