<Location /redmine>
PassengerBaseURI /redmine
PassengerAppRoot /var/lib/redmine
Require all granted
</Location>
修正後の箇所
<Location /redmine>
PassengerBaseURI /redmine
PassengerAppRoot /var/lib/redmine
<RequireAll>
Require all granted
# 2022/05/23 from hoge
Require not ip xxx.xxx.xxx.xxx
</RequireAll>
</Location>
差分
PassengerBaseURI /redmine
PassengerAppRoot /var/lib/redmine
+<RequireAll>
Require all granted
+# 2022/05/23 from hoge
+Require not ip xxx.xxx.xxx.xxx/xx
# ブロックしたいIPを指定
# 後のメンテナンスを考えて、NWアドレス単位で指定します
+</RequireAll>
</Location>