Install geoip for iptables in Debian 10

iptables_geoip_debian.md

1. change from buster to bullseye
2. sudo apt install libnet-cidr-lite-perl libtext-csv-xs-perl libgeoip2-perl

for day of writing, there is a problem with building by dkms this package xtables-addons-common so wehave to install this from source

1. sudo apt install pkg-config libxtables-dev
2. wget http://inai.de/files/xtables-addons/xtables-addons-3.13.tar.xz
3. tar xf xtables-addons-3.13.tar.xz
4. cd xtables-addons-3.13/
5. ./configure
6. make
7. sudo make install
8. sudo depmod -a
9. sudo modprobe x_tables
10. sudo modprobe xt_geoip
11. cd geoip
12. manual download GeoLite2-Country-CSV.zip from maxmind.com
13. ./xt_geoip_dl_maxmind
14. cd GeoLite2-Country-CSV_20201124/
15. sudo mkdir -p /usr/share/xt_geoip
16. sudo ../xt_geoip_build_maxmind -D /usr/share/xt_geoip/
17. sudo iptables -I INPUT -m geoip ! --src-cc XX -j DROP

Refenreces:

1. https://www.reddit.com/r/debian/comments/d6mnsa/firewall_with_geoip_capability_on_debian_10/
2. https://tracker.debian.org/pkg/xtables-addons

In my Debian 10 I had to change this step 16:
xt_geoip_build -D /usr/share/xt_geoip/ -i /usr/share/xt_geoip/dbip-country-lite.csv

checking kernel version that we will build against... make: *** /lib/modules/4.9.0-19-amd64/build: No such file or directory. Stop.