Hii...I am confused with URL Masking .. suppose i have domain like www.abc.com and i want to open like www.abc.com.au is this thing affect my SEO Keyword Ranking .... i dont want to create another website for aussie domain... one more thing i want domain forwarding without masking like someone type in address bar for abc.com.au he will redirect to abc.com but in browser abc.com.au will appear. and someone type abc.com then by deafult my abc.com domain will appear and in browser same url will appear abc.com these thing affect my seo ranking and brand reputation
First of all i have learned a new seo word " url masking " from you thanks for that, and coming to your point if you do 301 redirection for the domain you need to take to user will be good one from seo point of view.
You can forward your domain i.e abc.com.au to abc.com but keep in mind that if you wanna access pages in different folders of pages in root directory you will anyways see the original url e.g abc.com/contact-us.html But it will not affect ur seo.
The problem with domain masking is that it creates perceived duplicate content in search engines, particularly Google. In the example above, Google would see the two addresses, http://www.my-boring-site.com/page.html and http://www.really-exciting-page.com/page.html as two different sites showing the same content. Because Google and other search engines do not want to display multiple copies of the same content in their search results, they will likely choose one or the other of these URLs to index. Worse yet, if Google runs into a lot of duplicate content on your domains, it might decide that one or both are not worth visiting as often. Other penalties may also be possible. In short, it’s likely to be detrimental to your search engine presence and not a good strategy.