/etc/defaults/rc.conf (FreeBSD system start-up)  [System Files]

/etc/defaults/rc.conf (FreeBSD system start-up) [System Files]



In FreeBSD the primary start-up configuration file is /etc/defaults/rc.conf. System startup scripts such as /etc/rc and /etc/rc.d just include this file.

If you want to add other programs to system startup you need to change /etc/rc.conf file instead of /etc/defaults/rc.conf.

NEWER CHANGE /etc/defaults/rc.conf file!

Example, if you wish to start squid proxy server, you need to do:

# echo 'squid_enable=YES' >> /etc/rc.conf

To start up local services, place shell scripts in the /usr/local/etc/rc.d directory. These shell scripts should be set executable, the default file mode is 555.

/etc/defaults/rc.conf

Here is the original FreeBSD 9 /etc/defaults/rc.conf file

FreeBSD1# cat /etc/defaults/rc.conf
#!/bin/sh

# This is rc.conf - a file full of useful variables that you can set
# to change the default startup behavior of your system.  You should
# not edit this file!  Put any overrides into one of the ${rc_conf_files}
# instead and you will be able to update these defaults later without
# spamming your local configuration information.
#
# The ${rc_conf_files} files should only contain values which override
# values set in this file.  This eases the upgrade path when defaults
# are changed and new features are added.
#
# All arguments must be in double or single quotes.
#
# For a more detailed explanation of all the rc.conf variables, please
# refer to the rc.conf(5) manual page.
#
# $FreeBSD: release/9.0.0/etc/defaults/rc.conf 226786 2011-10-26 08:34:00Z mm $

##############################################################
###  Important initial Boot-time options  ####################
##############################################################

rc_debug="NO"		# Set to YES to enable debugging output from rc.d
rc_info="NO"		# Enables display of informational messages at boot.
rc_startmsgs="YES" 	# Show "Starting foo:" messages at boot
rcshutdown_timeout="30" # Seconds to wait before terminating rc.shutdown
early_late_divider="FILESYSTEMS"	# Script that separates early/late
			# stages of the boot process.  Make sure you know
			# the ramifications if you change this.
			# See rc.conf(5) for more details.

swapfile="NO"		# Set to name of swapfile if aux swapfile desired.
apm_enable="NO"		# Set to YES to enable APM BIOS functions (or NO).
apmd_enable="NO"	# Run apmd to handle APM event from userland.
apmd_flags=""		# Flags to apmd (if enabled).
ddb_enable="NO"		# Set to YES to load ddb scripts at boot.
ddb_config="/etc/ddb.conf"	# ddb(8) config file.
devd_enable="YES" 	# Run devd, to trigger programs on device tree changes.
devd_flags=""		# Additional flags for devd(8).
#kld_list="" 		# Kernel modules to load after local disks are mounted
kldxref_enable="NO"	# Build linker.hints files with kldxref(8).
kldxref_clobber="NO"	# Overwrite old linker.hints at boot.
kldxref_module_path=""	# Override kern.module_path. A ';'-delimited list.
powerd_enable="NO" 	# Run powerd to lower our power usage.
powerd_flags=""		# Flags to powerd (if enabled).
tmpmfs="AUTO"		# Set to YES to always create an mfs /tmp, NO to never
tmpsize="20m"		# Size of mfs /tmp if created
tmpmfs_flags="-S"	# Extra mdmfs options for the mfs /tmp
varmfs="AUTO"		# Set to YES to always create an mfs /var, NO to never
varsize="32m"		# Size of mfs /var if created
varmfs_flags="-S"	# Extra mount options for the mfs /var
populate_var="AUTO"	# Set to YES to always (re)populate /var, NO to never
cleanvar_enable="YES" 	# Clean the /var directory
local_startup="/usr/local/etc/rc.d" # startup script dirs.
script_name_sep=" "	# Change if your startup scripts' names contain spaces
rc_conf_files="/etc/rc.conf /etc/rc.conf.local"

# ZFS support
zfs_enable="NO"		# Set to YES to automatically mount ZFS file systems

gptboot_enable="YES"	# GPT boot success/failure reporting.

# Experimental - test before enabling
gbde_autoattach_all="NO" # YES automatically mounts gbde devices from fstab
gbde_devices="NO" 	# Devices to automatically attach (list, or AUTO)
gbde_attach_attempts="3" # Number of times to attempt attaching gbde devices
gbde_lockdir="/etc"	# Where to look for gbde lockfiles

# GELI disk encryption configuration.
geli_devices=""		# List of devices to automatically attach in addition to
			# GELI devices listed in /etc/fstab.
geli_tries=""		# Number of times to attempt attaching geli device.
			# If empty, kern.geom.eli.tries will be used.
geli_default_flags=""	# Default flags for geli(8).
geli_autodetach="YES"	# Automatically detach on last close.
			# Providers are marked as such when all file systems are
			# mounted.
# Example use.
#geli_devices="da1 mirror/home"
#geli_da1_flags="-p -k /etc/geli/da1.keys"
#geli_da1_autodetach="NO"
#geli_mirror_home_flags="-k /etc/geli/home.keys"

geli_swap_flags="-e aes -l 256 -s 4096 -d"	# Options for GELI-encrypted
						# swap partitions.

root_rw_mount="YES"	# Set to NO to inhibit remounting root read-write.
fsck_y_enable="NO"	# Set to YES to do fsck -y if the initial preen fails.
fsck_y_flags=""		# Additional flags for fsck -y
background_fsck="YES"	# Attempt to run fsck in the background where possible.
background_fsck_delay="60" # Time to wait (seconds) before starting the fsck.
netfs_types="nfs:NFS oldnfs:OLDNFS smbfs:SMB portalfs:PORTAL nwfs:NWFS" # Net filesystems.
extra_netfs_types="NO"	# List of network extra filesystem types for delayed
			# mount at startup (or NO).

##############################################################
###  Network configuration sub-section  ######################
##############################################################

### Basic network and firewall/security options: ###
hostname=""			# Set this!
hostid_enable="YES"		# Set host UUID.
hostid_file="/etc/hostid"	# File with hostuuid.
nisdomainname="NO"		# Set to NIS domain if using NIS (or NO).
dhclient_program="/sbin/dhclient"	# Path to dhcp client program.
dhclient_flags=""		# Extra flags to pass to dhcp client.
#dhclient_flags_fxp0=""		# Extra dhclient flags for fxp0 only
background_dhclient="NO"	# Start dhcp client in the background.
#background_dhclient_fxp0="YES"	# Start dhcp client on fxp0 in the background.
synchronous_dhclient="NO"	# Start dhclient directly on configured
				# interfaces during startup.
defaultroute_delay="30"		# Time to wait for a default route on a DHCP interface.
defaultroute_carrier_delay="5"	# Time to wait for carrier while waiting for a default route.
wpa_supplicant_program="/usr/sbin/wpa_supplicant"
wpa_supplicant_flags="-s"	# Extra flags to pass to wpa_supplicant
wpa_supplicant_conf_file="/etc/wpa_supplicant.conf"
#
firewall_enable="NO"		# Set to YES to enable firewall functionality
firewall_script="/etc/rc.firewall" # Which script to run to set up the firewall
firewall_type="UNKNOWN"		# Firewall type (see /etc/rc.firewall)
firewall_quiet="NO"		# Set to YES to suppress rule display
firewall_logging="NO"		# Set to YES to enable events logging
firewall_flags=""		# Flags passed to ipfw when type is a file
firewall_coscripts=""		# List of executables/scripts to run after
				# firewall starts/stops
firewall_client_net="192.0.2.0/24" # IPv4 Network address for "client"
				# firewall.
#firewall_client_net_ipv6="2001:db8:2:1::/64" # IPv6 network prefix for
				# "client" firewall.
firewall_simple_iif="ed1"	# Inside network interface for "simple"
				# firewall.
firewall_simple_inet="192.0.2.16/28" # Inside network address for "simple"
				# firewall.
firewall_simple_oif="ed0"	# Outside network interface for "simple"
				# firewall.
firewall_simple_onet="192.0.2.0/28" # Outside network address for "simple"
				# firewall.
#firewall_simple_iif_ipv6="ed1"	# Inside IPv6 network interface for "simple"
				# firewall.
#firewall_simple_inet_ipv6="2001:db8:2:800::/56" # Inside IPv6 network prefix
				# for "simple" firewall.
#firewall_simple_oif_ipv6="ed0"	# Outside IPv6 network interface for "simple"
				# firewall.
#firewall_simple_onet_ipv6="2001:db8:2:0::/56" # Outside IPv6 network prefix
				# for "simple" firewall.
firewall_myservices=""		# List of TCP ports on which this host
				# offers services for "workstation" firewall.
firewall_allowservices=""	# List of IPs which have access to
				# $firewall_myservices for "workstation"
				# firewall.
firewall_trusted=""		# List of IPs which have full access to this
				# host for "workstation" firewall.
firewall_logdeny="NO"		# Set to YES to log default denied incoming
				# packets for "workstation" firewall.
firewall_nologports="135-139,445 1026,1027 1433,1434" # List of TCP/UDP ports
				# for which denied incoming packets are not
				# logged for "workstation" firewall.
firewall_nat_enable="NO"	# Enable kernel NAT (if firewall_enable == YES)
firewall_nat_interface=""	# Public interface or IPaddress to use
firewall_nat_flags=""		# Additional configuration parameters
dummynet_enable="NO"		# Load the dummynet(4) module
ip_portrange_first="NO"		# Set first dynamically allocated port
ip_portrange_last="NO"		# Set last dynamically allocated port
ike_enable="NO"			# Enable IKE daemon (usually racoon or isakmpd)
ike_program="/usr/local/sbin/isakmpd"	# Path to IKE daemon
ike_flags=""			# Additional flags for IKE daemon
ipsec_enable="NO"		# Set to YES to run setkey on ipsec_file
ipsec_file="/etc/ipsec.conf"	# Name of config file for setkey
natd_program="/sbin/natd"	# path to natd, if you want a different one.
natd_enable="NO"		# Enable natd (if firewall_enable == YES).
natd_interface=""		# Public interface or IPaddress to use.
natd_flags=""			# Additional flags for natd.
ipfilter_enable="NO"		# Set to YES to enable ipfilter functionality
ipfilter_program="/sbin/ipf"	# where the ipfilter program lives
ipfilter_rules="/etc/ipf.rules"	# rules definition file for ipfilter, see
				# /usr/src/contrib/ipfilter/rules for examples
ipfilter_flags=""		# additional flags for ipfilter
ipnat_enable="NO"		# Set to YES to enable ipnat functionality
ipnat_program="/sbin/ipnat"	# where the ipnat program lives
ipnat_rules="/etc/ipnat.rules"	# rules definition file for ipnat
ipnat_flags=""			# additional flags for ipnat
ipmon_enable="NO"		# Set to YES for ipmon; needs ipfilter or ipnat
ipmon_program="/sbin/ipmon"	# where the ipfilter monitor program lives
ipmon_flags="-Ds"		# typically "-Ds" or "-D /var/log/ipflog"
ipfs_enable="NO"		# Set to YES to enable saving and restoring
				# of state tables at shutdown and boot
ipfs_program="/sbin/ipfs"	# where the ipfs program lives
ipfs_flags=""			# additional flags for ipfs
pf_enable="NO"			# Set to YES to enable packet filter (pf)
pf_rules="/etc/pf.conf"		# rules definition file for pf
pf_program="/sbin/pfctl"	# where the pfctl program lives
pf_flags=""			# additional flags for pfctl
pflog_enable="NO"		# Set to YES to enable packet filter logging
pflog_logfile="/var/log/pflog"	# where pflogd should store the logfile
pflog_program="/sbin/pflogd"	# where the pflogd program lives
pflog_flags=""			# additional flags for pflogd
ftpproxy_enable="NO"		# Set to YES to enable ftp-proxy(8) for pf
ftpproxy_flags=""		# additional flags for ftp-proxy(8)
pfsync_enable="NO"		# Expose pf state to other hosts for syncing
pfsync_syncdev=""		# Interface for pfsync to work through
pfsync_syncpeer=""		# IP address of pfsync peer host
pfsync_ifconfig=""		# Additional options to ifconfig(8) for pfsync
tcp_extensions="YES"		# Set to NO to turn off RFC1323 extensions.
log_in_vain="0"			# >=1 to log connects to ports w/o listeners.
tcp_keepalive="YES"		# Enable stale TCP connection timeout (or NO).
tcp_drop_synfin="NO"		# Set to YES to drop TCP packets with SYN+FIN
				# NOTE: this violates the TCP specification
icmp_drop_redirect="NO" 	# Set to YES to ignore ICMP REDIRECT packets
icmp_log_redirect="NO"		# Set to YES to log ICMP REDIRECT packets
network_interfaces="auto"	# List of network interfaces (or "auto").
cloned_interfaces=""		# List of cloned network interfaces to create.
#cloned_interfaces="gif0 gif1 gif2 gif3" # Pre-cloning GENERIC config.
#ifconfig_lo0="inet 127.0.0.1"	# default loopback device configuration.
#ifconfig_lo0_alias0="inet 127.0.0.254 netmask 0xffffffff" # Sample alias entry.
#ifconfig_ed0_ipx="ipx 0x00010010"	# Sample IPX address family entry.
#ifconfig_ed0_ipv6="inet6 2001:db8:1::1 prefixlen 64" # Sample IPv6 addr entry
#ifconfig_ed0_alias0="inet6 2001:db8:2::1 prefixlen 64" # Sample IPv6 alias
#ifconfig_fxp0_name="net0"	# Change interface name from fxp0 to net0.
#vlans_fxp0="101 vlan0"		# vlan(4) interfaces for fxp0 device
#create_args_vlan0="vlan 102"	# vlan tag for vlan0 device
#wlans_ath0="wlan0"		# wlan(4) interfaces for ath0 device
#wlandebug_wlan0="scan+auth+assoc"	# Set debug flags with wlanddebug(8)
#ipv4_addrs_fxp0="192.168.0.1/24 192.168.1.1-5/28" # example IPv4 address entry.
#
#autobridge_interfaces="bridge0"	# List of bridges to check
#autobridge_bridge0="tap* vlan0"	# Interface glob to automatically add to the bridge
#
# If you have any sppp(4) interfaces above, you might also want to set
# the following parameters.  Refer to spppcontrol(8) for their meaning.
sppp_interfaces=""		# List of sppp interfaces.
#sppp_interfaces="...0"		# example: sppp over ...
#spppconfig_...0="authproto=chap myauthname=foo myauthsecret='top secret' hisauthname=some-gw hisauthsecret='another secret'"
gif_interfaces=""		# List of GIF tunnels.
#gif_interfaces="gif0 gif1"	# Examples typically for a router.
				# Choose correct tunnel addrs.
#gifconfig_gif0="10.1.1.1 10.1.2.1"	# Examples typically for a router.
#gifconfig_gif1="10.1.1.2 10.1.2.2"	# Examples typically for a router.
fec_interfaces=""		# List of Fast EtherChannels.
#fec_interfaces="fec0 fec1"
#fecconfig_fec0="fxp0 dc0"	# Examples typically for two NICs
#fecconfig_fec1="em0 em1 bge0 bge1"	# Examples typically for four NICs

# User ppp configuration.
ppp_enable="NO"		# Start user-ppp (or NO).
ppp_program="/usr/sbin/ppp"	# Path to user-ppp program.
ppp_mode="auto"		# Choice of "auto", "ddial", "direct" or "dedicated".
			# For details see man page for ppp(8). Default is auto.
ppp_nat="YES"		# Use PPP's internal network address translation or NO.
ppp_profile="papchap"	# Which profile to use from /etc/ppp/ppp.conf.
ppp_user="root"		# Which user to run ppp as

# Start multiple instances of ppp at boot time
#ppp_profile="profile1 profile2 profile3"	# Which profiles to use
#ppp_profile1_mode="ddial"	# Override ppp mode for profile1
#ppp_profile2_nat="NO"		# Override nat mode for profile2
# profile3 uses default ppp_mode and ppp_nat

### Network daemon (miscellaneous) ###
hostapd_enable="NO"		# Run hostap daemon.
syslogd_enable="YES"		# Run syslog daemon (or NO).
syslogd_program="/usr/sbin/syslogd" # path to syslogd, if you want a different one.
syslogd_flags="-s"		# Flags to syslogd (if enabled).
inetd_enable="NO"		# Run the network daemon dispatcher (YES/NO).
inetd_program="/usr/sbin/inetd"	# path to inetd, if you want a different one.
inetd_flags="-wW -C 60"		# Optional flags to inetd
hastd_enable="NO"		# Run the HAST daemon (YES/NO).
hastd_program="/sbin/hastd"	# path to hastd, if you want a different one.
hastd_flags=""			# Optional flags to hastd.
#
# named.  It may be possible to run named in a sandbox, man security for
# details.
#
named_enable="NO"		# Run named, the DNS server (or NO).
named_program="/usr/sbin/named" # Path to named, if you want a different one.
named_conf="/etc/namedb/named.conf" 	# Path to the configuration file
#named_flags=""			# Use this for flags OTHER than -u and -c
named_uid="bind" 		# User to run named as
named_chrootdir="/var/named"	# Chroot directory (or "" not to auto-chroot it)
named_chroot_autoupdate="YES"	# Automatically install/update chrooted
				# components of named. See /etc/rc.d/named.
named_symlink_enable="YES"	# Symlink the chrooted pid file
named_wait="NO" 		# Wait for working name service before exiting
named_wait_host="localhost" 	# Hostname to check if named_wait is enabled
named_auto_forward="NO" 	# Set up forwarders from /etc/resolv.conf
named_auto_forward_only="NO" 	# Do "forward only" instead of "forward first"

#
# kerberos. Do not run the admin daemons on slave servers
#
kerberos5_server_enable="NO"	# Run a kerberos 5 master server (or NO).
kerberos5_server="/usr/libexec/kdc"	# path to kerberos 5 KDC
kerberos5_server_flags="--detach"	# Additional flags to the kerberos 5 server
kadmind5_server_enable="NO"	# Run kadmind (or NO)
kadmind5_server="/usr/libexec/kadmind"	# path to kerberos 5 admin daemon
kpasswdd_server_enable="NO"	# Run kpasswdd (or NO)
kpasswdd_server="/usr/libexec/kpasswdd"	# path to kerberos 5 passwd daemon

gssd_enable="NO"		# Run the gssd daemon (or NO).
gssd_flags=""			# Flags for gssd.

rwhod_enable="NO"		# Run the rwho daemon (or NO).
rwhod_flags=""			# Flags for rwhod
rarpd_enable="NO"		# Run rarpd (or NO).
rarpd_flags="-a"		# Flags to rarpd.
bootparamd_enable="NO"		# Run bootparamd (or NO).
bootparamd_flags=""		# Flags to bootparamd
pppoed_enable="NO"		# Run the PPP over Ethernet daemon.
pppoed_provider="*"		# Provider and ppp(8) config file entry.
pppoed_flags="-P /var/run/pppoed.pid"	# Flags to pppoed (if enabled).
pppoed_interface="fxp0"		# The interface that pppoed runs on.
sshd_enable="NO"		# Enable sshd
sshd_program="/usr/sbin/sshd"	# path to sshd, if you want a different one.
sshd_flags=""			# Additional flags for sshd.
ftpd_enable="NO"		# Enable stand-alone ftpd.
ftpd_program="/usr/libexec/ftpd" # Path to ftpd, if you want a different one.
ftpd_flags=""			# Additional flags to stand-alone ftpd.

### Network daemon (NFS): All need rpcbind_enable="YES" ###
amd_enable="NO"			# Run amd service with $amd_flags (or NO).
amd_program="/usr/sbin/amd"	# path to amd, if you want a different one.
amd_flags="-a /.amd_mnt -l syslog /host /etc/amd.map /net /etc/amd.map"
amd_map_program="NO"		# Can be set to "ypcat -k amd.master"
nfs_client_enable="NO"		# This host is an NFS client (or NO).
nfs_access_cache="60"		# Client cache timeout in seconds
nfs_server_enable="NO"		# This host is an NFS server (or NO).
oldnfs_server_enable="NO"	# Run the old NFS server (YES/NO).
nfs_server_flags="-u -t -n 4"	# Flags to nfsd (if enabled).
mountd_enable="NO"		# Run mountd (or NO).
mountd_flags="-r"		# Flags to mountd (if NFS server enabled).
weak_mountd_authentication="NO"	# Allow non-root mount requests to be served.
nfs_reserved_port_only="NO"	# Provide NFS only on secure port (or NO).
nfs_bufpackets=""		# bufspace (in packets) for client
rpc_lockd_enable="NO"		# Run NFS rpc.lockd needed for client/server.
rpc_lockd_flags=""		# Flags to rpc.lockd (if enabled).
rpc_statd_enable="NO"		# Run NFS rpc.statd needed for client/server.
rpc_statd_flags=""		# Flags to rpc.statd (if enabled).
rpcbind_enable="NO"		# Run the portmapper service (YES/NO).
rpcbind_program="/usr/sbin/rpcbind"	# path to rpcbind, if you want a different one.
rpcbind_flags=""		# Flags to rpcbind (if enabled).
rpc_ypupdated_enable="NO"	# Run if NIS master and SecureRPC (or NO).
keyserv_enable="NO"		# Run the SecureRPC keyserver (or NO).
keyserv_flags=""		# Flags to keyserv (if enabled).
nfsv4_server_enable="NO"	# Enable support for NFSv4
nfscbd_enable="NO"		# NFSv4 client side callback daemon
nfscbd_flags=""			# Flags for nfscbd
nfsuserd_enable="NO"		# NFSv4 user/group name mapping daemon
nfsuserd_flags=""		# Flags for nfsuserd

### Network Time Services options: ###
timed_enable="NO"		# Run the time daemon (or NO).
timed_flags=""			# Flags to timed (if enabled).
ntpdate_enable="NO"		# Run ntpdate to sync time on boot (or NO).
ntpdate_program="/usr/sbin/ntpdate"	# path to ntpdate, if you want a different one.
ntpdate_flags="-b"		# Flags to ntpdate (if enabled).
ntpdate_config="/etc/ntp.conf"	# ntpdate(8) configuration file
ntpdate_hosts=""		# Whitespace-separated list of ntpdate(8) servers.
ntpd_enable="NO"		# Run ntpd Network Time Protocol (or NO).
ntpd_program="/usr/sbin/ntpd"	# path to ntpd, if you want a different one.
ntpd_config="/etc/ntp.conf"	# ntpd(8) configuration file
ntpd_sync_on_start="NO"		# Sync time on ntpd startup, even if offset is high
ntpd_flags="-p /var/run/ntpd.pid -f /var/db/ntpd.drift"
				# Flags to ntpd (if enabled).

# Network Information Services (NIS) options: All need rpcbind_enable="YES" ###
nis_client_enable="NO"		# We're an NIS client (or NO).
nis_client_flags=""		# Flags to ypbind (if enabled).
nis_ypset_enable="NO"		# Run ypset at boot time (or NO).
nis_ypset_flags=""		# Flags to ypset (if enabled).
nis_server_enable="NO"		# We're an NIS server (or NO).
nis_server_flags=""		# Flags to ypserv (if enabled).
nis_ypxfrd_enable="NO"		# Run rpc.ypxfrd at boot time (or NO).
nis_ypxfrd_flags=""		# Flags to rpc.ypxfrd (if enabled).
nis_yppasswdd_enable="NO"	# Run rpc.yppasswdd at boot time (or NO).
nis_yppasswdd_flags=""		# Flags to rpc.yppasswdd (if enabled).

### SNMP daemon ###
# Be sure to understand the security implications of running SNMP v1/v2
# in your network.
bsnmpd_enable="NO"		# Run the SNMP daemon (or NO).
bsnmpd_flags=""			# Flags for bsnmpd.

### Network routing options: ###
defaultrouter="NO"		# Set to default gateway (or NO).
static_arp_pairs=""		# Set to static ARP list (or leave empty).
static_ndp_pairs=""		# Set to static NDP list (or leave empty).
static_routes=""		# Set to static route list (or leave empty).
natm_static_routes=""		# Set to static route list for NATM (or leave empty).
gateway_enable="NO"		# Set to YES if this host will be a gateway.
routed_enable="NO"		# Set to YES to enable a routing daemon.
routed_program="/sbin/routed"	# Name of routing daemon to use if enabled.
routed_flags="-q"		# Flags for routing daemon.
mrouted_enable="NO"		# Do IPv4 multicast routing.
mrouted_program="/usr/local/sbin/mrouted"	# Name of IPv4 multicast
						# routing daemon.  You need to
						# install it from package or
						# port.
mrouted_flags=""		# Flags for multicast routing daemon.
ipxgateway_enable="NO"		# Set to YES to enable IPX routing.
ipxrouted_enable="NO"		# Set to YES to run the IPX routing daemon.
ipxrouted_flags=""		# Flags for IPX routing daemon.
arpproxy_all="NO"		# replaces obsolete kernel option ARP_PROXYALL.
forward_sourceroute="NO"	# do source routing (only if gateway_enable is set to "YES")
accept_sourceroute="NO"		# accept source routed packets to us

### ATM interface options: ###
atm_enable="NO"			# Configure ATM interfaces (or NO).
#atm_netif_hea0="atm 1"		# Network interfaces for physical interface.
#atm_sigmgr_hea0="uni31"	# Signalling manager for physical interface.
#atm_prefix_hea0="ILMI"		# NSAP prefix (UNI interfaces only) (or ILMI).
#atm_macaddr_hea0="NO"		# Override physical MAC address (or NO).
#atm_arpserver_atm0="0x47.0005.80.999999.9999.9999.9999.999999999999.00" # ATMARP server address (or local).
#atm_scsparp_atm0="NO"		# Run SCSP/ATMARP on network interface (or NO).
atm_pvcs=""			# Set to PVC list (or leave empty).
atm_arps=""			# Set to permanent ARP list (or leave empty).

### Bluetooth ###
hcsecd_enable="NO"		# Enable hcsecd(8) (or NO)
hcsecd_config="/etc/bluetooth/hcsecd.conf" # hcsecd(8) configuration file

sdpd_enable="NO"		# Enable sdpd(8) (or NO)
sdpd_control="/var/run/sdp"	# sdpd(8) control socket
sdpd_groupname="nobody"		# set spdp(8) user/group to run as after
sdpd_username="nobody"		# it initializes

bthidd_enable="NO"		# Enable bthidd(8) (or NO)
bthidd_config="/etc/bluetooth/bthidd.conf" # bthidd(8) configuration file
bthidd_hids="/var/db/bthidd.hids" # bthidd(8) known HID devices file

rfcomm_pppd_server_enable="NO"	# Enable rfcomm_pppd(8) in server mode (or NO)
rfcomm_pppd_server_profile="one two"	# Profile to use from /etc/ppp/ppp.conf
#
#rfcomm_pppd_server_one_bdaddr=""	# Override local bdaddr for 'one'
rfcomm_pppd_server_one_channel="1"	# Override local channel for 'one'
#rfcomm_pppd_server_one_register_sp="NO"	# Override SP and DUN register
#rfcomm_pppd_server_one_register_dun="NO"	# for 'one'
#
#rfcomm_pppd_server_two_bdaddr=""	# Override local bdaddr for 'two'
rfcomm_pppd_server_two_channel="3"	# Override local channel for 'two'
#rfcomm_pppd_server_two_register_sp="NO"	# Override SP and DUN register
#rfcomm_pppd_server_two_register_dun="NO"	# for 'two'

ubthidhci_enable="NO"		# Switch an USB BT controller present on
#ubthidhci_busnum="3"		# bus 3 and addr 2 from HID mode to HCI mode.
#ubthidhci_addr="2"		# Check usbconfig list to find the correct
				# numbers for your system.

### Network link/usability verification options
netwait_enable="NO"		# Enable rc.d/netwait (or NO)
#netwait_ip=""			# IP addresses to be pinged by netwait.
netwait_timeout="60"		# Total number of seconds to perform pings.
#netwait_if=""			# Interface name to watch link state on.
netwait_if_timeout="30"		# Total number of seconds to monitor link state.

### Miscellaneous network options: ###
icmp_bmcastecho="NO"	# respond to broadcast ping packets

### IPv6 options: ###
ipv6_network_interfaces="auto"	# List of IPv6 network interfaces
				# (or "auto" or "none").
ipv6_activate_all_interfaces="NO"	# If NO, interfaces which have no
					# corresponding $ifconfig_IF_ipv6 is
					# marked as IFDISABLED for security
					# reason.
ipv6_defaultrouter="NO"		# Set to IPv6 default gateway (or NO).
#ipv6_defaultrouter="2002:c058:6301::"	# Use this for 6to4 (RFC 3068)
ipv6_static_routes=""		# Set to static route list (or leave empty).
#ipv6_static_routes="xxx"	# An example to set fec0:0000:0000:0006::/64
				#  route toward loopback interface.
#ipv6_route_xxx="fec0:0000:0000:0006:: -prefixlen 64 ::1"
ipv6_gateway_enable="NO"	# Set to YES if this host will be a gateway.
ipv6_cpe_wanif="NO"		# Set to the upstram interface name if this
				# node will work as a router to forward IPv6
				# packets not explicitly addressed to itself.
ipv6_privacy="NO"		# Use privacy address on RA-receiving IFs
				# (RFC 4941)

route6d_enable="NO"		# Set to YES to enable an IPv6 routing daemon.
route6d_program="/usr/sbin/route6d"	# Name of IPv6 routing daemon.
route6d_flags=""		# Flags to IPv6 routing daemon.
#route6d_flags="-l"		# Example for route6d with only IPv6 site local
				# addrs.
#route6d_flags="-q"		# If you want to run a routing daemon on an end
				# node, you should stop advertisement.
#ipv6_network_interfaces="ed0 ep0"	# Examples for router
					# or static configuration for end node.
					# Choose correct prefix value.
#ipv6_prefix_ed0="fec0:0000:0000:0001 fec0:0000:0000:0002"  # Examples for rtr.
#ipv6_prefix_ep0="fec0:0000:0000:0003 fec0:0000:0000:0004"  # Examples for rtr.
ipv6_default_interface="NO"	# Default output interface for scoped addrs.
				# This works only with
				# ipv6_gateway_enable="NO".
rtsol_flags=""			# Flags to IPv6 router solicitation.
rtsold_enable="NO"		# Set to YES to enable an IPv6 router
				# solicitation daemon.
rtsold_flags="-a"		# Flags to an IPv6 router solicitation
				# daemon.
rtadvd_enable="NO"		# Set to YES to enable an IPv6 router
				# advertisement daemon. If set to YES,
				# this router becomes a possible candidate
				# IPv6 default router for local subnets.
rtadvd_interfaces=""		# Interfaces rtadvd sends RA packets.
mroute6d_enable="NO"		# Do IPv6 multicast routing.
mroute6d_program="/usr/local/sbin/pim6dd"	# Name of IPv6 multicast
						# routing daemon.  You need to
						# install it from package or
						# port.
mroute6d_flags=""		# Flags to IPv6 multicast routing daemon.
stf_interface_ipv4addr=""	# Local IPv4 addr for 6to4 IPv6 over IPv4
				# tunneling interface. Specify this entry
				# to enable 6to4 interface.
stf_interface_ipv4plen="0"	# Prefix length for 6to4 IPv4 addr,
				# to limit peer addr range. Effective value
				# is 0-31.
stf_interface_ipv6_ifid="0:0:0:1"	# IPv6 interface id for stf0.
				# If you like, you can set "AUTO" for this.
stf_interface_ipv6_slaid="0000"	# IPv6 Site Level Aggregator for stf0
ipv6_faith_prefix="NO"		# Set faith prefix to enable a FAITH
				# IPv6-to-IPv4 TCP translator.  You also need
				# faithd(8) setup.
ipv6_ipv4mapping="NO"		# Set to "YES" to enable IPv4 mapped IPv6 addr
				# communication. (like ::ffff:a.b.c.d)
ipv6_ipfilter_rules="/etc/ipf6.rules"	# rules definition file for ipfilter,
					# see /usr/src/contrib/ipfilter/rules
					# for examples
ip6addrctl_enable="YES"	# Set to YES to enable default address selection
ip6addrctl_verbose="NO"	# Set to YES to enable verbose configuration messages
ip6addrctl_policy="AUTO"	# A pre-defined address selection policy
				# (ipv4_prefer, ipv6_prefer, or AUTO)

##############################################################
###  System console options  #################################
##############################################################

keyboard=""		# keyboard device to use (default /dev/kbd0).
keymap="NO"		# keymap in /usr/share/syscons/keymaps/* (or NO).
keyrate="NO"		# keyboard rate to: slow, normal, fast (or NO).
keybell="NO" 		# See kbdcontrol(1) for options.  Use "off" to disable.
keychange="NO"		# function keys default values (or NO).
cursor="NO"		# cursor type {normal|blink|destructive} (or NO).
scrnmap="NO"		# screen map in /usr/share/syscons/scrnmaps/* (or NO).
font8x16="NO"		# font 8x16 from /usr/share/syscons/fonts/* (or NO).
font8x14="NO"		# font 8x14 from /usr/share/syscons/fonts/* (or NO).
font8x8="NO"		# font 8x8 from /usr/share/syscons/fonts/* (or NO).
blanktime="300"		# blank time (in seconds) or "NO" to turn it off.
saver="NO"		# screen saver: Uses /boot/kernel/${saver}_saver.ko
moused_nondefault_enable="YES" # Treat non-default mice as enabled unless
			       # specifically overriden in rc.conf(5).
moused_enable="NO"	# Run the mouse daemon.
moused_type="auto"	# See man page for rc.conf(5) for available settings.
moused_port="/dev/psm0"	# Set to your mouse port.
moused_flags=""		# Any additional flags to moused.
mousechar_start="NO"	# if 0xd0-0xd3 default range is occupied in your
			# language code table, specify alternative range
			# start like mousechar_start=3, see vidcontrol(1)
allscreens_flags=""	# Set this vidcontrol mode for all virtual screens
allscreens_kbdflags=""	# Set this kbdcontrol mode for all virtual screens

##############################################################
###  Mail Transfer Agent (MTA) options  ######################
##############################################################

mta_start_script="/etc/rc.sendmail"
			# Script to start your chosen MTA, called by /etc/rc.
# Settings for /etc/rc.sendmail and /etc/rc.d/sendmail:
sendmail_enable="NO"	# Run the sendmail inbound daemon (YES/NO).
sendmail_pidfile="/var/run/sendmail.pid"	# sendmail pid file
sendmail_procname="/usr/sbin/sendmail"		# sendmail process name
sendmail_flags="-L sm-mta -bd -q30m" # Flags to sendmail (as a server)
sendmail_submit_enable="YES"	# Start a localhost-only MTA for mail submission
sendmail_submit_flags="-L sm-mta -bd -q30m -ODaemonPortOptions=Addr=localhost"
				# Flags for localhost-only MTA
sendmail_outbound_enable="YES"	# Dequeue stuck mail (YES/NO).
sendmail_outbound_flags="-L sm-queue -q30m" # Flags to sendmail (outbound only)
sendmail_msp_queue_enable="YES"	# Dequeue stuck clientmqueue mail (YES/NO).
sendmail_msp_queue_flags="-L sm-msp-queue -Ac -q30m"
				# Flags for sendmail_msp_queue daemon.
sendmail_rebuild_aliases="NO"	# Run newaliases if necessary (YES/NO).

##############################################################
###  Miscellaneous administrative options  ###################
##############################################################

auditd_enable="NO"	# Run the audit daemon.
auditd_program="/usr/sbin/auditd"	# Path to the audit daemon.
auditd_flags=""		# Which options to pass to the audit daemon.
cron_enable="YES"	# Run the periodic job daemon.
cron_program="/usr/sbin/cron"	# Which cron executable to run (if enabled).
cron_dst="YES"		# Handle DST transitions intelligently (YES/NO)
cron_flags=""		# Which options to pass to the cron daemon.
lpd_enable="NO"		# Run the line printer daemon.
lpd_program="/usr/sbin/lpd"	# path to lpd, if you want a different one.
lpd_flags=""		# Flags to lpd (if enabled).
nscd_enable="NO"	# Run the nsswitch caching daemon.
chkprintcap_enable="NO"	# Run chkprintcap(8) before running lpd.
chkprintcap_flags="-d"	# Create missing directories by default.
dumpdev="NO"		# Device to crashdump to (device name, AUTO, or NO).
dumpdir="/var/crash"	# Directory where crash dumps are to be stored
savecore_flags=""	# Used if dumpdev is enabled above, and present.
crashinfo_enable="YES"	# Automatically generate crash dump summary.
crashinfo_program="/usr/sbin/crashinfo"	# Script to generate crash dump summary.
quota_enable="NO"	# turn on quotas on startup (or NO).
check_quotas="YES"	# Check quotas on startup (or NO).
quotaon_flags="-a"	# Turn quotas on for all file systems (if enabled)
quotaoff_flags="-a"	# Turn quotas off for all file systems at shutdown
quotacheck_flags="-a"	# Check all file system quotas (if enabled)
accounting_enable="NO"	# Turn on process accounting (or NO).
ibcs2_enable="NO"	# Ibcs2 (SCO) emulation loaded at startup (or NO).
ibcs2_loaders="coff"	# List of additional Ibcs2 loaders (or NO).

# Emulation/compatibility services provided by /etc/rc.d/abi
sysvipc_enable="NO"	# Load System V IPC primitives at startup (or NO).
linux_enable="NO"	# Linux binary compatibility loaded at startup (or NO).
svr4_enable="NO"	# SysVR4 emulation loaded at startup (or NO).
clear_tmp_enable="NO"	# Clear /tmp at startup.
clear_tmp_X="YES" 	# Clear and recreate X11-related directories in /tmp
ldconfig_insecure="NO"	# Set to YES to disable ldconfig security checks
ldconfig_paths="/usr/lib/compat /usr/local/lib /usr/local/lib/compat/pkg"
			# shared library search paths
ldconfig32_paths="/usr/lib32" # 32-bit compatibility shared library search paths
ldconfig_paths_aout="/usr/lib/compat/aout /usr/local/lib/aout"
			# a.out shared library search paths
ldconfig_local_dirs="/usr/local/libdata/ldconfig"
			# Local directories with ldconfig configuration files.
ldconfig_local32_dirs="/usr/local/libdata/ldconfig32"
			# Local directories with 32-bit compatibility ldconfig
			# configuration files.
kern_securelevel_enable="NO"	# kernel security level (see security(7))
kern_securelevel="-1"	# range: -1..3 ; `-1' is the most insecure
			# Note that setting securelevel to 0 will result
			# in the system booting with securelevel set to 1, as
			# init(8) will raise the level when rc(8) completes.
update_motd="YES"	# update version info in /etc/motd (or NO)
entropy_file="/entropy"	# Set to NO to disable caching entropy through reboots.
			# /var/db/entropy-file is preferred if / is not avail.
entropy_dir="/var/db/entropy" # Set to NO to disable caching entropy via cron.
entropy_save_sz="2048"	# Size of the entropy cache files.
entropy_save_num="8"	# Number of entropy cache files to save.
harvest_interrupt="YES"	# Entropy device harvests interrupt randomness
harvest_ethernet="YES"	# Entropy device harvests ethernet randomness
harvest_p_to_p="YES"	# Entropy device harvests point-to-point randomness
dmesg_enable="YES"	# Save dmesg(8) to /var/run/dmesg.boot
watchdogd_enable="NO"	# Start the software watchdog daemon
watchdogd_flags=""	# Flags to watchdogd (if enabled)
devfs_rulesets="/etc/defaults/devfs.rules /etc/devfs.rules" # Files containing
							    # devfs(8) rules.
devfs_system_ruleset=""	# The name (NOT number) of a ruleset to apply to /dev
devfs_set_rulesets=""	# A list of /mount/dev=ruleset_name settings to
			# apply (must be mounted already, i.e. fstab(5))
performance_cx_lowest="HIGH"	# Online CPU idle state
performance_cpu_freq="NONE"	# Online CPU frequency
economy_cx_lowest="HIGH"	# Offline CPU idle state
economy_cpu_freq="NONE"		# Offline CPU frequency
virecover_enable="YES"	# Perform housekeeping for the vi(1) editor
ugidfw_enable="NO"	# Load mac_bsdextended(4) rules on boot
bsdextended_script="/etc/rc.bsdextended"	# Default mac_bsdextended(4)
						# ruleset file.
newsyslog_enable="YES"	# Run newsyslog at startup.
newsyslog_flags="-CN"	# Newsyslog flags to create marked files
mixer_enable="YES"	# Run the sound mixer.
opensm_enable="NO"	# Opensm(8) for infiniband devices defaults to off

##############################################################
### Jail Configuration #######################################
##############################################################
jail_enable="NO"	# Set to NO to disable starting of any jails
jail_parallel_start="NO"	# Start jails in the background
jail_list=""		# Space separated list of names of jails
jail_set_hostname_allow="YES" # Allow root user in a jail to change its hostname
jail_socket_unixiproute_only="YES" # Route only TCP/IP within a jail
jail_sysvipc_allow="NO"	# Allow SystemV IPC use from within a jail

#
# To use rc's built-in jail infrastructure create entries for
# each jail, specified in jail_list, with the following variables.
# NOTES:
# - replace 'example' with the jail's name.
# - except rootdir, hostname, ip and the _multi<n> addresses,
#   all of the following variables may be made global jail variables
#   if you don't specify a jail name (ie. jail_interface, jail_devfs_ruleset).
#
#jail_example_rootdir="/usr/jail/default"	# Jail's root directory
#jail_example_hostname="default.domain.com"	# Jail's hostname
#jail_example_interface=""			# Jail's interface variable to create IP aliases on
#jail_example_fib="0"				# Routing table for setfib(1)
#jail_example_ip="192.0.2.10,2001:db8::17"	# Jail's primary IPv4 and IPv6 address
#jail_example_ip_multi0="2001:db8::10"		#  and another IPv6 address
#jail_example_exec_start="/bin/sh /etc/rc"		# command to execute in jail for starting
#jail_example_exec_afterstart0="/bin/sh command"	# command to execute after the one for
							# starting the jail. More than one can be
							# specified using a trailing number
#jail_example_exec_stop="/bin/sh /etc/rc.shutdown"	# command to execute in jail for stopping
#jail_example_devfs_enable="NO"			# mount devfs in the jail
#jail_example_devfs_ruleset="ruleset_name"	# devfs ruleset to apply to jail -
						# usually you want "devfsrules_jail".
#jail_example_fdescfs_enable="NO"		# mount fdescfs in the jail
#jail_example_procfs_enable="NO"		# mount procfs in jail
#jail_example_mount_enable="NO"			# mount/umount jail's fs
#jail_example_fstab=""				# fstab(5) for mount/umount
#jail_example_flags="-l -U root"		# flags for jail(8)

##############################################################
### Define source_rc_confs, the mechanism used by /etc/rc.* ##
### scripts to source rc_conf_files overrides safely.	    ##
##############################################################

if [ -z "${source_rc_confs_defined}" ]; then
	source_rc_confs_defined=yes
	source_rc_confs () {
		local i sourced_files
		for i in ${rc_conf_files}; do
			case ${sourced_files} in
			*:$i:*)
				;;
			*)
				sourced_files="${sourced_files}:$i:"
				if [ -r $i ]; then
					. $i
				fi
				;;
			esac
		done
	}
fi
FreeBSD1#

Source: http://www.freebsd.org/doc/en/books/faq/admin.html

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