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Regarding Estonia: you can camp on anyones land a reasonable distance from their house. If there are signs up like 'private property' or similar, then you are not allowed there. If there are none, you are free to put up a tent and spend the night. Unless of course you get a verbal denial from the landowner. Fires are a big no-no on private property, unless the owner agrees to you making a campfire or he has a clearly marked fire pit for this purpose.
A lot of forest is owned by the government, and if you are not in a nature reserve or similar area, you are free to do one of two things: put up a tent or make a fire. Not both at the same time. The law is fuzzy but it states camping WITH firemaking is prohibited, so if you do one at a time you'd win in a court 100% of the time if forest rangers (or whatever they're called here) find you fucking around in the forest, I haven't seen one ever in many years.
There is a catch though, you can't light any fire (this includes smoking cigarettes) during the fire hazardous period, which is pretty much from April to October (varies whether it's a dry season or not). But again, nobody's going to even know you made a small fire. You'd have to be burning tires for someone to notice.
loodusegakoos ee/rules-of-conduct/freedom-to-roam (dot missing before ee)
for more info, but it contradicts the same info in Estonian. Private property may be camped on (with a tent) for the duration of 24 hours if the owner does not prohibit it verbally.