Modified the sshd.conf for fail2ban and how it's handled to avoid certain issues with the regex filter and how the line is added. Tested on different machines.

Modifications to integrate the new DNS SRV system of Prometheus with further groups of servers at Faster, including ext_srv (f2b exporters) and bare_metal

Minor change to avoid an alert on Alpine with allowipv6

See merge request !3

Update with the script for ipv4 and ipv6 as well as ban/unban in one script....

See merge request !2

Update with the script for ipv4 and ipv6 as well as ban/unban in one script. Added a nftables chain.

Repositionning of the fail2ban configuration with nftables from wireguard to...

See merge request !1

Repositionning of the fail2ban configuration with nftables from wireguard to ext_srv as all servers exposed to the outside should be protected as well. Also minor cosmetic changes and light reordering.