If you are using CentOS 7, you can find similar guidance here: How to Block Access Based on GeoIP on
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How to Block Access Based on GeoIP on CentOS 7
If you are using Ubuntu, you can find similar guidance here: How to Block Access Based on GeoIP on Ubuntu.
Continue readingHow to Block Access Based on GeoIP on Ubuntu
I usually use this method to block access to my Zimbra server from international IP/outside. Only IP based on my
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