---- from root's .bash_history ----

ifconfig  eth0
nameif kutya 00:50:56:ae:00:09
ifconfig 
ifconfig  eth0
man ifconfig
route
vi /etc/network/interfaces
arpo
arp
arp -n
ssh teacherb
arp -n
ping teacherb
traceroute teacherb
traceroute rs1.sze.hu
ifconfig 
 ssh whale.hit.bme.hu -l lencse
traceroute whale.hit.bme.hu
iptables -L
ping -c 1 teacherb
iptables -A INPUT -p icmp -j drop
iptables -A INPUT -p icmp -j DROP
iptables -L
ping -c 1 teacherb
iptables -D INPUT -p icmp -j DROP
iptables -A INPUT -s 192.168.100.105 -p icmp -j DROP
ping ns.tilb.sze.hu
ping teacherb.tilb.sze.hu
iptables -D INPUT -s 192.168.100.105 -p icmp -j DROP
iptables
man iptables
cd /proc/sys
ls
cd net
ls
cd ipv4
ls
ls ip*
cat ip_forward 
vi /etc/sysctl.conf 
man sysctl.conf
vi /etc/sysctl.conf
man iptables
man iptables