Linux as strong end host


Among many usages, Linux can be used/configured as an "End
System" (a.k.a. host) or a router.

When using Linux as an ES (End System), Linux can be configured/used
as supporting either the "Strong ES Model" or the "Weak ES Model".
default for a Linux ES is the "Weak ES Model".

See regarding "Strong ES Model"
"Weak ES Model".

The question is, what is the easiest/best way to configure/setup
as an End System supporting the "Strong ES Model"?

Does there exist a "simple configuration flag" for configuring the
Linux host either as weak or strong?

If not do you think it would be a useful/helpful configuration option
to add?