<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_URI} ^(.*)?wp-login\.php(.*)$ [OR]
RewriteCond %{REQUEST_URI} ^(.*)?wp-admin$
RewriteCond %{REMOTE_ADDR} !^Your IP address 1$
RewriteCond %{REMOTE_ADDR} !^ Your IP address 2$
RewriteCond %{REMOTE_ADDR} !^ Your IP address 3$
RewriteCond %{REMOTE_ADDR} !^ Your IP address 4$
RewriteCond %{REMOTE_ADDR} !^ Your IP address 5$
RewriteRule ^(.*)$ - [R=403,L]
</IfModule>