1
Q
UDP Headers
A
Source port
Destination port
length - number of bytes
checksum - not validated by wireshark by default
[stream Index] - four tuple src/des IP address and src/des ports assigns a number to that conversation
[stream Packet Number] packet number in the stream
2
Q
How DHCP Works
A
Contains 4 packets
-DHCP Discover : Network broadcast ethernet layer (ff:ff:ff:ff)
and IP layer (255.255.255.255)
-DHCP Offer : Server offers address etc
-DHCP Request : Client makes a formal request
-DHCP ACK : Server acknowledges the request and formally assign config.
3
Q
How DNS works
Domain name system
-The phone book of the internet
-Translates names and domainds into IP addresses
-One of the most important network services
A
4
Q
A
