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/etc/sysctl

http://www.jp.freebsd.org/ を見てください。 

# portsnap fetch update

RC3: http://lists.freebsd.org/pipermail/freebsd-stable/2012-November/070401.html

portsnap: http://www.omakase.org/freebsd/portsnap.html

Resource Limits https://www.freebsd.org/doc/handbook/security-resourcelimits.html 

Note:

Whenever /etc/login.conf is edited, the /etc/login.conf.db must be updated by executing the following command:

# cap_mkdb /etc/login.conf