Comfortably monitor your network traffic in real-time with Sniffnet
github.comSniffnet is a simple yet insightful application to let you have a glance into your network traffic in a straightforward and appealing way
This looks interesting as an alternative to Wireshark. I noticed in the readme it has a menu to select "TCP", "UDP" or "both". If you select "All Protocols" does it also show ESP/IPSec or does it show ESP as "other"? The reason I ask is due to some cell phones encapsulating some traffic in a VPN tunnel unless it is blocked at which point I see it fall back to encapsulated UDP tunnels.
For the moment, upper protocols are determined just by looking at the port numbers, so it is likely that the protocols you mentioned would be shown as "Other". I know this is not the best method to determine app protocols, but otherwise it would have been too complex to detect specific layer 7 protocols.
Makes sense. I am not a proper developer so I can not comment how difficult it would be to add that level of dissection in Rust. Here [1] is a page that describes how to utilize libpcap but I have no idea if that would be helpful or how difficult it would be to port this to Rust.