Red Hat Enterprise Linux 7 is available using the Red Hat Subscription Management services. The following Knowledge Base article
provides a brief overview and instructions on how to register your Red Hat Enterprise Linux 7 system with Red Hat Subscription Management.
Red Hat Enterprise Linux 7 supports new certificate-based entitlements through the subscription-manager tool. Legacy entitlements are also supported for Satellite users to provide a transition for users using Red Hat Enterprise Linux 5 and 6. Note that registering to Red Hat Network Classic using the rhn_register or rhnreg_ks tools will not work on Red Hat Enterprise Linux 7. You can use the mentioned tools to register to Red Hat Satellite or Proxy versions 5.6 only.