> StartCom has directions on their website. I don't recall what the process is, > but I've used it in the past. You might want to review the instructions > StartCom provides. StartCom, owned by WoSign, has issues with firefox. > Let's Encrypt is new and has become very popular. I don't know the process > because I have never used them. They will likely suffer more "unable to get > local issuer certificate" problems than StartCom, especially on older mobile > devices. Should not be an issue, since LE has a cross-signed CA cert with someone that is in the trust stores.