I want to reduce/limit/block the use of the many protocols in Ethernet which I don’t need at the moment.
In Ethernet, are there any protocols below the IP level that are still routable to outside the LAN? Ie. can an Ethernet frame w/o IP/UDP/TCP on top be sent to beyond the LAN?
What about raw Ethernet packets: can these be sent also beyond the LAN?
To answer my own question after some research on the web: no, Ethernet frames have only MAC addresses; ie. only packets with an IP header on top of the Ethernet frame are routable. So, raw Ethernet packets are not routable.
Raw sockets are a different thing: they are routable, cf. http://man7.org/linux/man-pages/man7/raw.7.html
S.a. https://networkengineering.stackexchange.com/questions/27830/what-do-tcp-udp-add-to-raw-ip
Can you keep your spam to a minimum please.
You already have this thread going here…