If you must run RHEL 6.5 in production:
Always verify the SHA-256 checksum provided on the download page against your downloaded file to ensure it hasn't been tampered with or corrupted. : sha256sum rhel-server-6.5-x86_64-dvd.iso If you must run RHEL 6
: Because RHEL 6.5 is over a decade old and well past its maintenance phase, it contains known security vulnerabilities. It should only be used in isolated environments or for legacy software compatibility. Red Hat Customer Portal verifying a SHA-256 checksum If you must run RHEL 6
for a file you've already downloaded to ensure it hasn't been tampered with? Download Red Hat Enterprise Linux (RHEL) If you must run RHEL 6
Mount the ISO directly in VMware, VirtualBox, or KVM.