Here's my hot smoked salmon:
Salmon - Hot Smoked
Basic Salmon Cure:
1 part Salt
4 parts Brown Sugar
Make enough cure to thickly pack around salmon.
Cut Salmon filet into pieces approximately 3-4 inches wide. Skin-on and skin-off both work, and are good. I prefer skin-off on my hot-smoked salmon, because I get more surface area for the pellicle. A lot of people prefer skin-on.
Heavily pack the cure all around the salmon in a glass or food-safe dish, cover with plastic wrap, and cure for 8 hours or overnight. There will be a lot of liquid in the dish after curing. Thoroughly rinse cure off of salmon. Blot with paper towels. Dry on rack for about 3 hours to form a pellicle. If drying for more than 3 hours, then dry for 4-8 hours on a rack in the refrigerator.
Set smoker to 170 degrees. Smoke until Salmon internal temp is 135 degrees. Many recipes say internal temp should be 145, but I think the salmon gets too firm/dry. I usually use 2-3 oz chips or thin strips/shards.
I put in the refrigerator covered with plastic wrap for 24 hours to mellow. Then vacuum seal and freeze. I don't know how long it keeps in the freezer, because mine doesn't last very long. But I would think it would last a 6 months to a year in the freezer vac sealed, possibly longer.