OK, so I we have a few webservers and a ftp server that sit behind our public IP that are used for a few applications. We need to get a SSL Certificate that I can install on each of the servers to pass PCI requirements. Currently I have been using self signed certs but that’s not good enough for the standard so I have to buy a publicly trusted one. All of the servers are reached thought the same FQDN that points at the IP address. So will I need a wildcard cert to cover both the ftp.domain.com, domain.com and the www.domain.com or will a basic cert work? I guess I’m confused as to whether the ftp.domain counts as a sub domain or not. All the other servers are separated buy for and forwarding at the firewall level. Thanks for any advice you can give on this.