If we will be gone for extended periods we put a stop on our mail at the post office. My wife has a friend that gets it once a month and drops off another stop on it, my wife fills out the authorization slip for her friend to submit.
If you don't live in cold weather you could opt to shut utilities off but there is usually a fee associated with that. You have to weigh the costs. At minimum if you have a water meter I would shut the water off there. Also notify the water department in writing that you will be gone. We were on a ~3 month trip, we notified the water department in person but no one made note of it. ~ 2 months into our trip the water department decided our meter was broke so they changed it and when we got back we had a bill that they calculated based on past consumption. I had to go down and complain to have the bill fixed.
I don't use any public internet to pay bills. We use a teathered connection to the phone or Mifi.
You might also want to notify your credit card providers that you are traveling.
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi