Which hardware for a firewall?

[Karel Lucas]

Hi all,

I'm going to create a firewall with openBSD, and would like to use the 
ARM64 or ARMv7 distribution for that. Unfortunately I don't know what 
hardware I can get for this, and that's the reason for this mail. Can 
someone point me to a suitable platform for this? If this email does not 
belong on this mailing list, I offer my apology. This is my first post 
on this mailing list, and ask for understanding. Sincerely, Karel.