Last updated: May 28, 2020 at 3:43 AM
Just now, this server suddenly became heavy, so we investigated the cause.
So, the other day, when I looked at the screen of the embedded perl access analysis program, it turned out that i was under attack from the famous German SPAM robot "clients.your-server.de".
Immediately, we added the following line to Apache '.htaccess' and denied access to our server.
# アクセス制限
order allow,deny
allow from all
# SPAM Bots
deny from .clients.your-server.de
deny from 171.113.220.
Note that yandex.com seems to be the largest search engine in Russia, but this BOT also comes frequently, so it's a bit annoying.
Kyivstar.net below it, looking at whois, it seems to be a Ukrainian net company. According to Wikipedia, the thing with Ukraine's largest mobile network operator.
Perhaps this is also a BOT.
Since then, there have been nearly 1,000 unusual access from China in a short period of time, so the IP address (Hubei Province) has also been denied access.
In the future, i have not yet decided what to do, but i think that the crawler, such as Bot and Bingbot of the search system is excluded, and other SPAM-based BOTS will be eliminated at the server level more and more.
