Red Hat Linux Security Guide 8.0.93
Page 35ff (5. Server Security)
Maybe add a short note about defense in depth here:
Use both firewalling and TCP wrappers, in case one of those fails (most
certainly because you misconfigured something ...)
I will see about adding this for the surrent release.
Thanks for the feedback.
I added a note to the latest version.
Thanks for the suggestion.