Is it possible to do SEO in Naver?
To give you the answer first, it is 'No'.
Naver blocks the crawling of the bots.
So to speak, Naver block nobody can crawl any of their data.
Naver doesn't allow anyone to access their data but they do lots of crawling from other sites. The example is Naver bot, Yeti.
Therefore it is not possible to do SEO in Naver.
Anyone who owns the site and want to do SEO, you should allow the bot to access to your site.
Please see the image below, this is what Naver did to block the Naver's crawling.
The contents which includes robots.txt in the route of your website, if you enter this,
User-agent:*
Disallow:/
They block the access of those bot.
