Allowing and disallowing spiders

Easy one - can somebody confirm my understanding?

[Zeberdy]

Just a quickie…..
Does the following allow all robots to visit all files?

User-agent: *
Disallow:

Whilst this one keeps all robots out.

User-agent: *
Disallow: /

Easy one for you guys - I know - but I need clarification for the sake of my sanity....

I am trying to stop spiders from enter test sites.

[Span]

User-agent: *
Disallow: /

..will only stop spiders that read and obey your robots.txt. So for the sake of your sanity it wouldn't hurt to password protect your test sites.

[Zeberdy]

Yeah good idea - thanks for the reply.

Sorry for the delay in my response.