tips: dns.rst@ccaa2f364422 (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
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	DNS.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	5	======
1911 870693ce6ff0 Fix my RST article style by 'check-format-policy' target. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1887 diff changeset	6	.. contents::
870693ce6ff0 Fix my RST article style by 'check-format-policy' target. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1887 diff changeset	7	:local:
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	8
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	9	About DNS resolving protocol.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	10	=============================
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	Default port for name resolving is ``53``::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	13
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	14	$ nslookup -port=53 microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	15
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	16	Debugging name resolution.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	17	==========================
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	$ nslookup -debug microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	21
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	22	Dumping all available resords::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	23
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	24	$ nslookup -type=any microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	25
1863 1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	26	Timing information and traces available via::
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	27
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	28	$ dig +trace google.com
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	29	$ 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	30
1873 d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	31	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	32	chicken/egg ptoblem when you request name resolution but asked to resolve
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	33	another name). To see IP addressed use ``+additional`` option::
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	34
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	35	$ dig +trace +additional google.com
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	36
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	37	IP from host name.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	38	==================
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	This request is for the ``A`` record and default for ``nslookup`` command::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	41
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	42	$ nslookup defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	43	$ nslookup -type=a defun.work
1863 1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	44	$ nslookup -type=a defun.work 8.8.8.8
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	45
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	46	$ dig @8.8.8.8 A defun.work
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	47	$ dig +nocmd +noall +answer defun.work
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	48
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	49	Host name from IP.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	50	==================
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	If that information available::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	53
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	54	$ nslookup -type=ptr 8.8.8.8
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	55
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	List authoritative NS for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	58	=================================
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	$ dig ns defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	62	$ nslookup -type=ns defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	63
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	64	List MX records for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	65	===========================
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	$ dig mx mail.google.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	69	$ nslookup -type=mx mail.google.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	70
1881 889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	71	Query for TXT records.
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	72	======================
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	$ dig -t TXT google.com
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	76	$ dig google.com TXT
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	77	$ nslookup -type=txt google.com
1887 7ace23894f44 nslookup -q=txt Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1881 diff changeset	78	$ nslookup -q=txt google.com
1881 889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	79	$ host -t txt google.com
889e37c1c5b5 Query for TXT records. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1874 diff changeset	80
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	81	List SOA records for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	82	============================
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	SOA ("Start Of Authority") Record for a domain provides technical information
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	85	about the domain::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	86
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	87	$ dig soa defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	88
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	89	Human readable format can be viewed via::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	90
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	91	$ nslookup -type=mx defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	92
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	93	origin = ns1.mindsandmachines.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	94	mail addr = admin.mindsandmachines.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	95	serial = 2011091101
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	96	refresh = 10800
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	97	retry = 7200
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	98	expire = 604800
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	99	minimum = 86400
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	100
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	101	Email adress for domain administrator is ``admin@mindsandmachines.com`` for
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	102	above output.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	103
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	104	List domain names.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	105	==================
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	$ dig ns dp.gov.ua
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	109	...
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	110	;; ANSWER SECTION:
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	111	dp.gov.ua. 3600 IN NS ns.giknpc.com.ua.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	112	...
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	$ dig @ns.giknpc.com.ua dp.gov.ua AXFR
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	115	...
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	116	dp.gov.ua. 3600 IN MX 200 relay2.giknpc.com.ua.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	117	dp.gov.ua. 3600 IN A 195.64.190.1
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	118	adm.dp.gov.ua. 3600 IN A 195.64.190.1
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	119
1874 12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	120	Get info about NS.
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	121	==================
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	Version of running NS::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	124
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	125	$ dig @4.2.2.1 version.bind chaos txt
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	126	$ 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	127
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	128	Server name::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	129
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	130	$ dig @4.2.2.1 id.server txt chaos
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	131	$ 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	132
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	133	$ dig @4.2.2.1 hostname.bind txt chaos
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	134	$ 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	135
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	136	That strings come from BIND config::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	137
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	138	options {
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	139	version "none of your business";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	140	server-id "Host A";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	141	hostname "Host A";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	142	};
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	143
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	144	How reread config file?
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	145	=======================
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	FreeBSD::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	148
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	149	$ named.reload

author	Oleksandr Gavenko <gavenkoa@gmail.com>
	Mon, 30 Jan 2017 00:44:30 +0200
changeset 2075	ccaa2f364422
parent 1912	8b81a8f0f692
child 2204	fa97eaac3276
permissions	-rw-r--r--