how to prevent the main site to show?

[abiao]

for example, my main site is www.domain.com or domain.com, how to prevent domain.com, sub.domain.com, domain.com/sub to show?

[g1smd]

A 301 redirect for each.

This question has already been asked twice in the last 24 hours, with example code included.

[jdMorgan]

abiao,

We get that question a lot. Here are some previous threads [google.com] on the subject.

Jim