How do I remove a HTTP header in Apache, if a certain IP access it?

How can I unset single/multiple HTTP headers when my website is accessed by a particular IP address? Because my CSP config blocks some local pages from loading properly. For example, if I have phpMyAdmin, but I cannot use it locally because CSP is set.

You can unset headers depending upon IP addresses by using this config:

# For single ip address. Change the IP address to your needs
<Directory "/path/to/the/folder/which/needs/to/have/this/feature">
<If "%{REMOTE_ADDR} == '127.0.0.1'">
Header always unset HeaderName
</If>
</Directory>

# For multiple IP addresses, remove the top one, and use this one, and change the IP addresses
# to your needs, and add more '||' to use more IP addresses.
<Directory "/path/to/the/folder/which/needs/to/have/this/feature">
<If "%{REMOTE_ADDR} == '127.0.0.1' || %{REMOTE_ADDR} == '1.2.3.4'">
Header always unset HeaderName
</If>
</Directory>

Make sure mod_headers is enabled. For more details check https://httpd.apache.org/docs/2.4/mod/core.html#if and https://httpd.apache.org/docs/2.4/expr.html.

You can configure it to your needs but be careful, and make sure you are not disabling headers like CSP for everyone except yourself.