Dynamic IP .htaccess blocklist?

Is it possible to block users from IP adresses with a dynamic file-based blocklist?

So, suppose the .htaccess looks like:

order Deny,Allow
Deny from 123.156.0.1
Deny from 10.0.0.10
Allow from all

Can this list be made dynamic, for example:

o开发者_运维问答rder Deny,Allow
[include Deny list here]
Allow from all

Another option would of course be to fix it with PHP, but it is preferable to let Apache handle this.

According to the Apache docs, it doesn't seem to be possible to read values from a text file.

However, you could include a configuration file containing the IP addresses. They would have to be in Apache's conf file format, though.

This should work:

order Deny,Allow
include conf/IPList.conf
Allow from all

It's even possible to include whole directories, even though it's not recommended.

I use the RewriteMap feature from Apache's RewriteModule, as a whitelist like this:

## WHITELIST IPS ##
RewriteMap ipslist txt:/path/to/whitelist.txt
RewriteCond %{REMOTE_ADDR} ^(.*)$
RewriteCond ${ipslist:%1|black} ^black$ [NC]
RewriteRule (.*) - [F]

With some tweaking, you could make this a blacklist.