Bonjour,
Je suis à la recherche d'informations concernant la structure d'une requete DNS.
Voici un exemple:
DNS Section 0: 31 bytes
Identification: 0x426D
Flags: 0x0100
Bits 0 to 3 : No error
Bits 4 to 6 : These three bits must be zero
Bit 7 : Recursion not available
Bit 8 : Recursion desired
Bit 9 : Not truncated: reply returned in full
Bit 10 : Authorative answer: False
Bits 11 to 14: Standard Query
Bit 15 : Message is a query
Number of question records: 1
Number of answer records: 0
Number of authority records: 0
Number of additional records: 0
Question Records
Question Record 1: www.google.fr
Query type: IP address
Query class: IP address
Je voudrais plus particulierement connaitre le role du champ Identification et savoir comment il se construit
Merci à tous
