Are there statistics out there for the relative “popularity” of different application-layer protocols by network traffic (i.e. HTTP(S) vs SMTP(S) vs other protocols)? I realize it will be different from different vantage points (e.g. a transit provider vs a small residential ISP), but we’d love to find any sources of hard numbers out there.
I’ve tried to search for data, but the best I could come up with is at least ten years out of date.
Thanks in advance!