#1
Write the syntax for an ifconfig command that sets the IP address of the interface eth0 to 128.143.2.3/16 with broadcast address 128.143.255.255.
ifconfig eth0 128.143.2.3 netmask 255.255.0.0 broadcast 128.143.255.255#2
Write the syntax of a tcpdump command that captures packets containing IP datagrams with a source or destination IP address equal to 10.0.1.12.
tcpdump host 10.0.1.12#3
Write the syntax of a tcpdump command that captures packets containing ICMP messages with a source or destination IP address equal to 10.0.1.12.
tcpdump icmp and host 10.0.1.12#4
Write the syntax of a tcpdump command that captures packets containing IP datagrams between two hosts with IP addresses 10.0.1.11 and 10.0.1.12, both on interface eth1.
tcpdump -i eth1 host 10.0.1.11 and host 10.0.1.12#5
Write a tcpdump filter expression that captures packets containing TCP segments with a source or destination IP address equal to 10.0.1.12.
tcp and host 10.0.1.12#6
Write a tcpdump filter expression that, in addition to the constraints in Question 5, only captures packets using port number 23.
tcp port 23 and host 10.0.1.12#7
Write the syntax for an ethereal command with capture filter so that all IP datagrams with a source or destination IP address equal to 10.0.1.12 are recorded.
ethereal -f host 10.0.1.12#8
Write the syntax for an ethereal display filter that shows IP datagrams with a destination IP address equal to 10.0.1.50 and frame sizes greater than 400 bytes.
ip.dst == 10.0.1.50 && frame.pkt_len > 400#9
Write the syntax for an ethereal display filter that shows packets containing ICMP messages with a source or destination IP address equal to 10.0.1.12 and frame numbers between 15 and 30.
ip.addr == 10.0.1.12 && icmp && frame.number > 15 && frame.number < 30#10
Write the syntax for an ethereal display filter that shows packets containing TCP segments with a source or destination IP address equal to 10.0.1.12 and using port number 23.
ip.addr == 10.0.1.12 && tcp.port == 23#11
Write an ethereal capture filter expression for Question 10.
host 10.0.1.12 and tcp port 23