symon monitor pf? http://wpd.home.xs4all.nl/symon/documentation.html
Installation notes ================== Privileges ========== symux needs read and write access to its rrdfiles. symon needs to interface with your kernel. Depending on your host system this leads to different privilege requirements: OpenBSD: - no privs: cpu, debug, df, if, io, mbuf, mem, proc, sensor - rw on /dev/pf for pf now I want to monitor pf, so we must grant user(_symon) rw Privileges to /dev/pf? why need write Privilege? only read Privilege may work? Will you suggest a workaround?