For WZSysGuard, you should choose RHEL version or non-RHEL version based on whether your Linux has SELinux in use, if SELinux is in use, choose RHEL version, otherwise choose the Debian version.
For all other software, you should choose either RHEL-Linux.x86_64 if the libc version used on your Linux is older than 2.13, and choose Debian-Linux if the libc version is same or newer than 2.13.
The wzsgWEBSELinux.setup is built on RHEL6.6, is for Linux servers that have
SELinux setup in enforced mode. But due to SELinux policy is very vendor and version based, it may need being changed for different version of OS.