Apache prevents domain names from maliciously pointing to web sites

After installing apache, the default website can be accessed through ip, so there may be some malicious domain names pointing to your website.

Set up a default site (note that this site is at the top of all sites and can be accessed directly via ip)

<VirtualHost *:80> 
ServerAdmin webmaster@localhost 
DocumentRoot /var/www 
<Directory /> 
Options Indexes FollowSymLinks MultiViews 
AllowOverride None 
Order deny, 
deny from all # Block access to everyone  
</Directory> 
ErrorLog ${APACHE_LOG_DIR}/error.log 
LogLevel warn 
CustomLog ${APACHE_LOG_DIR}/access.log combined 
</VirtualHost>