howto on tips and tricks regarding iptables

[valera-rozuvan]

Over the years - I have been using iptables for various purposes. Time to gather them all in one place.

[valera-rozuvan]

Some useful links:

• https://serverfault.com/questions/640981/iptables-only-solution-to-block-any-ip-address-who-has-made-too-many-connections
• https://serverfault.com/questions/986745/how-to-limit-number-of-connections-per-ip-on-nginx
• https://qna.habr.com/q/176259
• https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands
• https://www.digitalocean.com/community/tutorials/how-to-list-and-delete-iptables-firewall-rules
• https://blog.ipspace.net/2023/12/source-ip-address-outgoing-multihomed-traffic/