Re:eBPF Networking Techniques – Packet Redirection
by e12e on Saturday December 23, 2023 @01:30PM
(#38746644)
> I’d love to see how iptables actually works.
If you're actually interested in iptables the old packet filter how-to is great:
https://www.netfilter.org/documentation/HOWTO/packet-filteri...
But iptables is turning into just a legacy interface for nftables in modern Linux. See eg:
Re:eBPF Networking Techniques – Packet Redirection
by ldelossa on Saturday December 23, 2023 @01:25PM
(#38746599)
I do plan on having a "flow of a packet on a simple node". Working on an ingress and egress packet flow posts. These are rather large undertakings tho that require a post of their own IMO. Stay tuned for those :)
Agree more practical examples but disagree this is too abstract.
I’m thinking starting at more common scenarios then jumping to container networking. Ie - Flow of a packet on a simple node, a two interface node, then namespaces, and then quirky virtual stuff.
Another example - I’d love to see how iptables actually works. Maybe how to use ebpf to implement iptables things like source/dest NAT, Masquerade, etc.
But yeah I learned a ton here. Thanks