bcc VS tiny-snitch

But wait, there's more! Enter the BCC toolkit and library, your trusty sidekick in simplifying the arcane art of writing eBPF applications. With BCC by your side, you'll be wielding eBPF like a seasoned pro in no time.

Nice - I normally use [bash-readline](https://github.com/iovisor/bcc/blob/master/tools/bashreadlin...) when coworking/co-inhabiting a server or training someone.

One of the big wins is not so much “build and run your own stuff” but there are very nice low-cost (in terms of compute) performance utilities built on eBPF

https://github.com/iovisor/bcc

There are so many utilities in that list; there’s a diagram midway down the readme which tries to help show their uses. bcc-tools should be available in any distro.

Also, Brendan Gregg does a ton of performance stuff that is worth knowing about if you check out his other work. Not eBPF only. Flame graphs are useful.

Reference: https://github.com/iovisor/bcc/blob/master/libbpf-tools/memleak.c

In this article, we'll build a basic version of an HTTPS sniffer, inspired by bcc-sslsniff.py, but we'll use Rust and Aya. We're going to demonstrate the capabilities of uprobes by employing uprobe and uretprobe along with familiar maps like PerCpuArray, HashMap, and PerEventArray. This will be a straightforward example to help us explore how uprobes function.

As xpd program I am using the BCC example xdp_redirect_map.py in skb mode as my NIC does not support native mode, attaching the program to veth2 and a dummy function to veth3

https://github.com/iovisor/bcc/blob/master/docs/reference_gu...

i use a kind of tui. it is actually a gui, pops up fullscreen. you can’t click it though, just keypress interaction.

i agree with you. especially if i’m filtering all traffic, i need to be able to y/n quickly and easily.

https://github.com/nathants/tinysnitch#demo

the libnetfilterqueue setup i use locally is here: https://github.com/nathants/tinysnitch

> There isn't even a single decent dynamic firewall with those annoying popups.

even benign apps that phone home like pulumi and terraform are fun to see and block with annoying popups.

monitoring egress really is the only realistic play. i rolled my own[1], inspired by opensnitch[2].

netfilter_queue is really great, and definitely makes annoying popup dynamic firewalls possible.

1. https://github.com/nathants/tinysnitch