How to Build a Nether Base

Carve or wall off a safe pocket near your portal, then build it from fireproof blocks like nether brick or obsidian so lava and fire cannot reach you. Light it fully so nothing spawns inside, keep the portal within the walls, and seal any open sightlines to ghasts.

Non-flammable ones: nether brick, blackstone, obsidian, stone bricks, deepslate and concrete. Avoid wood and wool near lava. Obsidian also resists ghast fireballs, so it is ideal for the outer shell and the portal frame.

Wall off the open sides so ghasts cannot see or shoot you, since their fireballs only fly in a straight line. An obsidian or solid wall, a roof, and no large open windows facing the caverns keep their fireballs out.

Yes. Keep the base wrapped around your portal so you arrive somewhere safe and lit, never out in the open. Many players build a portal hub here linking several Overworld portals through one protected Nether room.

Use glowstone, shroomlight, lanterns or sea lanterns. The Nether is dark and full of spawns, so light every surface inside and the approach to your portal to keep it clear of hostile mobs.

Yes. Fireproof blocks, obsidian, portals and lighting behave the same on Java and Bedrock, so the same safe Nether base design works on either edition.