tips: dns.rst@870693ce6ff0 (annotated)

1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	1	.. -- coding: utf-8; --
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	2	.. include:: HEADER.rst
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	3
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	4	======
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	5	DNS.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	6	======
1911 870693ce6ff0 Fix my RST article style by 'check-format-policy' target. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1887 diff changeset	7	.. contents::
870693ce6ff0 Fix my RST article style by 'check-format-policy' target. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1887 diff changeset	8	:local:
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	9
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	10	About DNS resolving protocol.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	11	=============================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	12
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	13	Default port for name resolving is ``53``::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	14
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	15	$ nslookup -port=53 microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	16
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	17	Debugging name resolution.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	18	==========================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	19	::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	20
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	21	$ nslookup -debug microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	22
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	23	Dumping all available resords::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	24
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	25	$ nslookup -type=any microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	26
1863 1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	27	Timing information and traces available via::
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	28
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	29	$ dig +trace google.com
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	30	$ dig @8.8.4.4 +noall +answer +stats A defun.work
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	31
1873 d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	32	Despite ``dig`` shown only names for NS replays also have IP adresses (to avoid
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	33	chicken/egg ptoblem when you request name resolution but asked to resolve
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	34	another name). To see IP addressed use ``+additional`` option::
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	35
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	36	$ dig +trace +additional google.com
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	37
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	38	IP from host name.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	39	==================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	40
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	41	This request is for the ``A`` record and default for ``nslookup`` command::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	42
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	43	$ nslookup defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	44	$ nslookup -type=a defun.work
1863 1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	45	$ nslookup -type=a defun.work 8.8.8.8
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	46
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	47	$ dig @8.8.8.8 A defun.work
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	48	$ dig +nocmd +noall +answer defun.work
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	49
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	50	Host name from IP.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	51	==================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	52
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	53	If that information available::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	54
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	55	$ nslookup -type=ptr 8.8.8.8
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	56
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	57
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	58	List authoritative NS for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	59	=================================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	60	::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	61
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	62	$ dig ns defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	63	$ nslookup -type=ns defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	64
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	65	List MX records for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	66	===========================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	67	::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	68
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	69	$ dig mx mail.google.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	70	$ nslookup -type=mx mail.google.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	71
1881 889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	72	Query for TXT records.
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	73	======================
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	74	::
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	75
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	76	$ dig -t TXT google.com
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	77	$ dig google.com TXT
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	78	$ nslookup -type=txt google.com
1887 7ace23894f44 nslookup -q=txt Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1881 diff changeset	79	$ nslookup -q=txt google.com
1881 889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	80	$ host -t txt google.com
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	81
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	82	List SOA records for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	83	============================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	84
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	85	SOA ("Start Of Authority") Record for a domain provides technical information
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	86	about the domain::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	87
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	88	$ dig soa defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	89
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	90	Human readable format can be viewed via::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	91
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	92	$ nslookup -type=mx defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	93
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	94	origin = ns1.mindsandmachines.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	95	mail addr = admin.mindsandmachines.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	96	serial = 2011091101
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	97	refresh = 10800
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	98	retry = 7200
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	99	expire = 604800
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	100	minimum = 86400
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	101
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	102	Email adress for domain administrator is ``admin@mindsandmachines.com`` for
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	103	above output.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	104
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	105	List domain names.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	106	==================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	107	::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	108
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	109	$ dig ns dp.gov.ua
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	110	...
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	111	;; ANSWER SECTION:
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	112	dp.gov.ua. 3600 IN NS ns.giknpc.com.ua.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	113	...
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	114
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	115	$ dig @ns.giknpc.com.ua dp.gov.ua AXFR
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	116	...
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	117	dp.gov.ua. 3600 IN MX 200 relay2.giknpc.com.ua.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	118	dp.gov.ua. 3600 IN A 195.64.190.1
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	119	adm.dp.gov.ua. 3600 IN A 195.64.190.1
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	120
1874 12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	121	Get info about NS.
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	122	==================
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	123
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	124	Version of running NS::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	125
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	126	$ dig @4.2.2.1 version.bind chaos txt
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	127	$ nslookup -q=txt -class=CHAOS version.bind. 4.2.2.1
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	128
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	129	Server name::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	130
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	131	$ dig @4.2.2.1 id.server txt chaos
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	132	$ nslookup -q=txt -class=CHAOS id.server. 4.2.2.1
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	133
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	134	$ dig @4.2.2.1 hostname.bind txt chaos
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	135	$ nslookup -q=txt -class=CHAOS hostname.bind. 4.2.2.1
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	136
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	137	That strings come from BIND config::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	138
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	139	options {
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	140	version "none of your business";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	141	server-id "Host A";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	142	hostname "Host A";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	143	};
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	144
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	145	How reread config file?
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	146	=======================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	147
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	148	FreeBSD::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	149
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	150	$ named.reload

author	Oleksandr Gavenko <gavenkoa@gmail.com>
	Mon, 22 Feb 2016 13:34:55 +0200
changeset 1911	870693ce6ff0
parent 1887	7ace23894f44
child 1912	8b81a8f0f692
permissions	-rw-r--r--