After installing a grsec/firewall, I started receiving many console messages! How do I remove them?
If you are receiving console messages, and have configured /etc/syslog.conf to redirect them to either files or a special TTY, you might be seeing messages sent directly to the console. The default console log level for any given kernel is 7, which means that any message with lower priority will appear in the console. Usually, firewalls (the LOG rule) and some other security tools log lower that this priority, and thus, are sent directly to the console. To reduce messages sent to the console, you can use dmesg (-n option, see dmesg(8)), which examines and controls the kernel ring buffer.
