понедельник, 24 декабря 2012 г.

Debugging режим nslookup

В меморизз...
более подробный вывод nslookup'а:
Nslookup: set d2
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Turns exhaustive debugging mode on or off. All fields of every packet are printed.
Syntax

set [no]d2
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Parameters

nod2   : Turns off exhaustive debugging mode. The default syntax is nod2.
d2   : Turns on exhaustive debugging mode.
{ help | ? } : Displays a short summary of nslookup subcommands.

например, так:
nslookup
╤хЁтхЁ яю єьюыўрэш■:  UnKnown
Address:  192.168.41.20

> set d2
> ya.ru
╤хЁтхЁ:  UnKnown
Address:  192.168.41.20

------------
SendRequest(), len 37
    HEADER:
        opcode = QUERY, id = 2, rcode = NOERROR
        header flags:  query, want recursion
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        ya.ru.LANITNW.local, type = A, class = IN

------------
------------
Got answer (103 bytes):
    HEADER:
        opcode = QUERY, id = 2, rcode = NXDOMAIN
        header flags:  response, auth. answer, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        ya.ru.LANITNW.local, type = A, class = IN
    AUTHORITY RECORDS:
    ->  lanitnw.local
        type = SOA, class = IN, dlen = 41
        ttl = 3600 (1 hour)
        primary name server = alpha.lanitnw.local
        responsible mail addr = hostmaster.lanitnw.local
        serial  = 9243
        refresh = 900 (15 mins)
        retry   = 600 (10 mins)
        expire  = 86400 (1 day)
        default TTL = 3600 (1 hour)

------------
------------
SendRequest(), len 37
    HEADER:
        opcode = QUERY, id = 3, rcode = NOERROR
        header flags:  query, want recursion
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        ya.ru.LANITNW.local, type = AAAA, class = IN

------------
------------
Got answer (103 bytes):
    HEADER:
        opcode = QUERY, id = 3, rcode = NXDOMAIN
        header flags:  response, auth. answer, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        ya.ru.LANITNW.local, type = AAAA, class = IN
    AUTHORITY RECORDS:
    ->  lanitnw.local
        type = SOA, class = IN, dlen = 41
        ttl = 3600 (1 hour)
        primary name server = alpha.lanitnw.local
        responsible mail addr = hostmaster.lanitnw.local
        serial  = 9243
        refresh = 900 (15 mins)
        retry   = 600 (10 mins)
        expire  = 86400 (1 day)
        default TTL = 3600 (1 hour)

------------
------------
SendRequest(), len 23
    HEADER:
        opcode = QUERY, id = 4, rcode = NOERROR
        header flags:  query, want recursion
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        ya.ru, type = A, class = IN

------------
------------
Got answer (151 bytes):
    HEADER:
        opcode = QUERY, id = 4, rcode = NOERROR
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 8,  authority records = 0,  additional = 0

    QUESTIONS:
        ya.ru, type = A, class = IN
    ANSWERS:
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 213.180.193.3
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 213.180.204.3
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 77.88.21.3
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 87.250.250.3
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 87.250.250.203
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 87.250.251.3
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 93.158.134.3
        ttl = 6188 (1 hour 43 mins 8 secs)
    ->  ya.ru
        type = A, class = IN, dlen = 4
        internet address = 93.158.134.203
        ttl = 6188 (1 hour 43 mins 8 secs)

------------
Не заслуживающий доверия ответ:
------------
SendRequest(), len 23
    HEADER:
        opcode = QUERY, id = 5, rcode = NOERROR
        header flags:  query, want recursion
        questions = 1,  answers = 0,  authority records = 0,  additional = 0

    QUESTIONS:
        ya.ru, type = AAAA, class = IN

------------
------------
Got answer (79 bytes):
    HEADER:
        opcode = QUERY, id = 5, rcode = NOERROR
        header flags:  response, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        ya.ru, type = AAAA, class = IN
    AUTHORITY RECORDS:
    ->  ya.ru
        type = SOA, class = IN, dlen = 44
        ttl = 900 (15 mins)
        primary name server = ns1.yandex.ru
        responsible mail addr = sysadmin.yandex.ru
        serial  = 2012121400
        refresh = 10800 (3 hours)
        retry   = 900 (15 mins)
        expire  = 2592000 (30 days)
        default TTL = 900 (15 mins)

------------
╚ь :     ya.ru
Addresses:  213.180.193.3
          213.180.204.3
          77.88.21.3
          87.250.250.3
          87.250.250.203
          87.250.251.3
          93.158.134.3
          93.158.134.203

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