ifconfig_em0="inet 10.5.13.X/24"
defaultrouter="10.5.13.254"

# Alias example
# ifconfig_em0_alias0="inet 10.5.13.18/32"
# ifconfig_em0_alias1="inet 10.5.13.19/32"
# ifconfig_em0_alias2="inet 192.168.15.1/24"

# 802.1q example
# cloned_interfaces="vlan2 vlan26"
# ifconfig_vlan2="inet 195.19.32.134/29 vlan 2 vlandev em0"
# ifconfig_vlan26="inet 195.19.37.193/26 vlan 26 vlandev em0"

[gX:~] # cat /etc/hosts
…
10.5.3.Y	gY
10.5.3.50	g50

 
[gX:~] # cat /etc/resolv.conf 
domain  class
nameserver      127.0.0.1

# ifconfig em0 -alias

# ifconfig em0 inet 10.5.13.X/24

# /etc/rc.d/netif start

route -n flush

route add default 10.5.13.254

/etc/rc.d/routing start

Команда	        Ключи
arp	        -a -d
ping	        -s размер
netstat 	-rn –f inet –I интерфейс -inb
ifstat	
traceroute	
sockstat	-4
tcpdump	        -i em0 -n -s 0 -X "port 21 and host 10.5.13.15"
nslookup