I just found out about this and thought it was great. http://www.itsupportleeds.net/how-to-use-htaccess-to-improve-seo-and-security/
It think Wordpress (pretty much) does all of that to your blog by default — without you having to do something at all
.htaccess is a file in your source . it has all the information about IP address etc. mod_rewrite is a module of this file which is used in the cloaking.
very nice, am kinda new to internet marketing but i have faced some of the issues as the article wishes to correct, am setting a new website soon and i will surely try them out. thanks.