tips: dns.rst@12f24827be09 (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	======
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	7
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	8	About DNS resolving protocol.
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
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	11	Default port for name resolving is ``53``::
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	$ nslookup -port=53 microsoft.com
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	Debugging name resolution.
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	::
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	$ nslookup -debug microsoft.com
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	Dumping all available resords::
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	$ nslookup -type=any microsoft.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	24
1863 1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	25	Timing information and traces available via::
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	26
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	27	$ dig +trace google.com
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	28	$ 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	29
1873 d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	30	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	31	chicken/egg ptoblem when you request name resolution but asked to resolve
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	32	another name). To see IP addressed use ``+additional`` option::
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	33
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	34	$ dig +trace +additional google.com
d64682ab74a2 ``+additional`` option Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1863 diff changeset	35
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	36	IP from host name.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	37	==================
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	This request is for the ``A`` record and default for ``nslookup`` command::
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	$ nslookup defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	42	$ nslookup -type=a defun.work
1863 1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	43	$ nslookup -type=a defun.work 8.8.8.8
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	44
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	45	$ dig @8.8.8.8 A defun.work
1532554ca0b4 Timing information and traces. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1862 diff changeset	46	$ dig +nocmd +noall +answer defun.work
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	47
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	48	Host name from IP.
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
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	51	If that information available::
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	$ nslookup -type=ptr 8.8.8.8
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
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	56	List authoritative NS for domain.
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	::
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	$ dig ns defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	61	$ nslookup -type=ns defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	62
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	63	List MX records for domain.
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	::
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	$ dig mx mail.google.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	68	$ nslookup -type=mx mail.google.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	69
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	70	List SOA records for domain.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	71	============================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	72
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	73	SOA ("Start Of Authority") Record for a domain provides technical information
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	74	about the domain::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	75
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	76	$ dig soa defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	77
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	78	Human readable format can be viewed via::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	79
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	80	$ nslookup -type=mx defun.work
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	81
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	82	origin = ns1.mindsandmachines.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	83	mail addr = admin.mindsandmachines.com
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	84	serial = 2011091101
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	85	refresh = 10800
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	86	retry = 7200
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	87	expire = 604800
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	88	minimum = 86400
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	Email adress for domain administrator is ``admin@mindsandmachines.com`` for
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	91	above output.
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	List domain names.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	94	==================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	95	::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	96
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	97	$ dig ns dp.gov.ua
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	98	...
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	99	;; ANSWER SECTION:
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	100	dp.gov.ua. 3600 IN NS ns.giknpc.com.ua.
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
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	103	$ dig @ns.giknpc.com.ua dp.gov.ua AXFR
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	dp.gov.ua. 3600 IN MX 200 relay2.giknpc.com.ua.
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	106	dp.gov.ua. 3600 IN A 195.64.190.1
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	107	adm.dp.gov.ua. 3600 IN A 195.64.190.1
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	108
1874 12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	109	Get info about NS.
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	110	==================
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	111
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	112	Version of running NS::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	113
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	114	$ dig @4.2.2.1 version.bind chaos txt
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	115	$ 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	116
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	117	Server name::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	118
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	119	$ dig @4.2.2.1 id.server txt chaos
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	120	$ 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	121
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	122	$ dig @4.2.2.1 hostname.bind txt chaos
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	123	$ 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	124
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	125	That strings come from BIND config::
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	126
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	127	options {
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	128	version "none of your business";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	129	server-id "Host A";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	130	hostname "Host A";
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	131	};
12f24827be09 Get info about NS. Oleksandr Gavenko <gavenkoa@gmail.com> parents: 1873 diff changeset	132
1862 f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	133	How reread config file?
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	134	=======================
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	135
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	136	FreeBSD::
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	137
f4e844aa1217 Debugging name resolution. Oleksandr Gavenko <gavenkoa@gmail.com> parents: diff changeset	138	$ named.reload

author	Oleksandr Gavenko <gavenkoa@gmail.com>
	Wed, 13 Jan 2016 23:29:23 +0200
changeset 1874	12f24827be09
parent 1873	d64682ab74a2
child 1881	889e37c1c5b5
permissions	-rw-r--r--