.dhclient eth0 active interface ‘eth0′ in dhcp mode
.ethtool eth0 show network statistics of eth0
.host www.example.com lookup hostname to resolve name to ip address and viceversa
.hostname show hostname of system
.ifconfig eth0 show configuration of an ethernet network card
.ifconfig eth0 192.168.1.1 netmask 255.255.255.0 configure IP Address
.ifconfig eth0 promisc configure ‘eth0′ in promiscuous mode to gather packets (sniffing)
.ifdown eth0 disable an interface ‘eth0′
.ifup eth0 activate an interface ‘eth0′
.ip link show show link status of all network interfaces
.iwconfig eth1 show wireless networks
.iwlist scan wifi scanning to display the wireless connections available
.mii-tool eth0 show link status of ‘eth0′
.netstat -tup show all active network connections and their PID
.netstat -tupl show all network services listening on the system and their PID
.netstat -rn show routing table alike “route -n”
.nslookup www.example.com lookup hostname to resolve name to ip address and viceversa
.route -n show routing table
.route add -net 0/0 gw IP_Gateway configure default gateway
.route add -net 192.168.0.0 netmask 255.255.0.0 gw 192.168.1.1 configure static route to reach network ’192.168.0.0/16′
.route del 0/0 gw IP_gateway remove static route
.echo “1″ > /proc/sys/net/ipv4/ip_forward activate ip routing temporarily
.tcpdump tcp port 80 show all HTTP traffic
.whois www.example.com lookup on Whois databas
.ethtool eth0 show network statistics of eth0
.host www.example.com lookup hostname to resolve name to ip address and viceversa
.hostname show hostname of system
.ifconfig eth0 show configuration of an ethernet network card
.ifconfig eth0 192.168.1.1 netmask 255.255.255.0 configure IP Address
.ifconfig eth0 promisc configure ‘eth0′ in promiscuous mode to gather packets (sniffing)
.ifdown eth0 disable an interface ‘eth0′
.ifup eth0 activate an interface ‘eth0′
.ip link show show link status of all network interfaces
.iwconfig eth1 show wireless networks
.iwlist scan wifi scanning to display the wireless connections available
.mii-tool eth0 show link status of ‘eth0′
.netstat -tup show all active network connections and their PID
.netstat -tupl show all network services listening on the system and their PID
.netstat -rn show routing table alike “route -n”
.nslookup www.example.com lookup hostname to resolve name to ip address and viceversa
.route -n show routing table
.route add -net 0/0 gw IP_Gateway configure default gateway
.route add -net 192.168.0.0 netmask 255.255.0.0 gw 192.168.1.1 configure static route to reach network ’192.168.0.0/16′
.route del 0/0 gw IP_gateway remove static route
.echo “1″ > /proc/sys/net/ipv4/ip_forward activate ip routing temporarily
.tcpdump tcp port 80 show all HTTP traffic
.whois www.example.com lookup on Whois databas
