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Oct 03 2017

How to Block IPs from Countries using Iptables Geoip Addons

We’ll learn how we can block traffic originated from specific country IPs using GeoIP database and linux iptables. Iptables is a command based utility program for configuring the linux kernel firewall which is implemented within the Netfilter project. Whereas GeoIP is a collection of IPs corresponding with the geographical locations where the geographical location is mapped with the IP addresses allocated at those specific organization, city, state and countries. The geographical co-ordinates in the GeoIP database are the often near the center of the population so it should not be used to identify a particular address or household. And with the help of a module called xt_geoip consisting in an iptables extension xtables-addon and the GeoIP database, we’ll perform country-based traffic filtering which helps us block or allow the traffic from a specific country.

Source: How to Block IPs from Countries using Iptables Geoip Addons (LinOxide)

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