এটি ডিএনএস ক্যোয়ারির ওয়্যারশার্কের কাঁচা ডাম্প।
ডিএনএস অংশটি 24 1 এ দিয়ে শুরু হয়:
0000 00 00 00 00 00 00 00 00 00 00 00 00 08 00 45 00 ........ ......E.
0010 00 3c 51 e3 40 00 40 11 ea cb 7f 00 00 01 7f 00 .<Q.@.@. ........
0020 00 01 ec ed 00 35 00 28 fe 3b 24 1a 01 00 00 01 .....5.( .;$.....
0030 00 00 00 00 00 00 03 77 77 77 06 67 6f 6f 67 6c .......w ww.googl
0040 65 03 63 6f 6d 00 00 01 00 01 e.com... ..
এবং এখানে ভাঙ্গন:
Domain Name System (query)
[Response In: 1852]
Transaction ID: 0x241a
Flags: 0x0100 (Standard query)
0... .... .... .... = Response: Message is a query
.000 0... .... .... = Opcode: Standard query (0)
.... ..0. .... .... = Truncated: Message is not truncated
.... ...1 .... .... = Recursion desired: Do query recursively
.... .... .0.. .... = Z: reserved (0)
.... .... ...0 .... = Non-authenticated data OK: Non-authenticated data is unacceptable
Questions: 1
Answer RRs: 0
Authority RRs: 0
Additional RRs: 0
Queries
www.google.com: type A, class IN
Name: www.google.com
Type: A (Host address)
Class: IN (0x0001)
এবং প্রতিক্রিয়া, আবার 24 1a থেকে শুরু:
0000 00 00 00 00 00 00 00 00 00 00 00 00 08 00 45 00 ........ ......E.
0010 00 7a 00 00 40 00 40 11 3c 71 7f 00 00 01 7f 00 .z..@.@. <q......
0020 00 01 00 35 ec ed 00 66 fe 79 24 1a 81 80 00 01 ...5...f .y$.....
0030 00 03 00 00 00 00 03 77 77 77 06 67 6f 6f 67 6c .......w ww.googl
0040 65 03 63 6f 6d 00 00 01 00 01 c0 0c 00 05 00 01 e.com... ........
0050 00 05 28 39 00 12 03 77 77 77 01 6c 06 67 6f 6f ..(9...w ww.l.goo
0060 67 6c 65 03 63 6f 6d 00 c0 2c 00 01 00 01 00 00 gle.com. .,......
0070 00 e3 00 04 42 f9 59 63 c0 2c 00 01 00 01 00 00 ....B.Yc .,......
0080 00 e3 00 04 42 f9 59 68 ....B.Yh
ভাঙ্গন:
Domain Name System (response)
[Request In: 1851]
[Time: 0.000125000 seconds]
Transaction ID: 0x241a
Flags: 0x8180 (Standard query response, No error)
1... .... .... .... = Response: Message is a response
.000 0... .... .... = Opcode: Standard query (0)
.... .0.. .... .... = Authoritative: Server is not an authority for domain
.... ..0. .... .... = Truncated: Message is not truncated
.... ...1 .... .... = Recursion desired: Do query recursively
.... .... 1... .... = Recursion available: Server can do recursive queries
.... .... .0.. .... = Z: reserved (0)
.... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
.... .... .... 0000 = Reply code: No error (0)
Questions: 1
Answer RRs: 3
Authority RRs: 0
Additional RRs: 0
Queries
www.google.com: type A, class IN
Name: www.google.com
Type: A (Host address)
Class: IN (0x0001)
Answers
www.google.com: type CNAME, class IN, cname www.l.google.com
Name: www.google.com
Type: CNAME (Canonical name for an alias)
Class: IN (0x0001)
Time to live: 3 days, 21 hours, 52 minutes, 57 seconds
Data length: 18
Primary name: www.l.google.com
www.l.google.com: type A, class IN, addr 66.249.89.99
Name: www.l.google.com
Type: A (Host address)
Class: IN (0x0001)
Time to live: 3 minutes, 47 seconds
Data length: 4
Addr: 66.249.89.99
www.l.google.com: type A, class IN, addr 66.249.89.104
Name: www.l.google.com
Type: A (Host address)
Class: IN (0x0001)
Time to live: 3 minutes, 47 seconds
Data length: 4
Addr: 66.249.89.104
সম্পাদনা:
মনে রাখবেন যে আপনার যদি আসল প্রশ্নটি হয় "আমি কীভাবে ডিএনএস সার্ভার লিখব?", তবে দুটি যথাযথ উত্তর রয়েছে:
সম্পাদনা করুন (2):
অনুরোধটি hostএকটি লিনাক্স বক্স ব্যবহার করে প্রেরণ করা হয়েছিল :
host www.google.com
আপনি যদি উইন্ডোতে থাকেন তবে আপনি এটি ব্যবহার করতে পারেন nslookup
nslookup www.google.com