Preserving green timber siding on red pine log cabin?

I just purchased a log cabin made of Red Pine half log timber siding. The siding is still green as it still has the bark on it. My question is in regards to what would be considered normal ”wear and tear” of the exterior log siding and what type of maintenance do you suggest should be done to preserve the timber siding. I also noticed very tiny holes throughout the log siding with small piles of dust, not sure what type of insect it may be. What would you recommend to do in order to extermi