Subject: [DNS-Whois; long] ¥Ñ IP addr. §ä¨Ï¥Î³æ¦ì ?
ºKn»¡©ú:
- ¥Ñ IP addr. §ä¨Ï¥Î³æ¦ì
- Whois ªº¨Ï¥Î
- reverse DNS database ªº«Ø¥ß»P¨Ï¥Î
From: cschen@cc.nctu.edu.tw (C.S.Chen)
Newsgroups: tw.bbs.comp.network,tw.bbs.comp.unix,tw.bbs.comp.linux,tw.bbs.comp.386bsd,tw.bbs.config
Subject: [DNS-Whois; long] ¥Ñ IP addr. §ä¨Ï¥Î³æ¦ì ?
Date: 13 May 1997 15:22:49 GMT
°ê¤º, ºô»Úºô¸ô¨Ï¥Î¤éº¥ÀWÁc. ¦]¦¹, ¨C¨C±`·|¸I¤W¤@¨Ç±¡ªp,
»Ýn±oª¾¤@¨Ç³s½u³æ¦ìªº¸ê°T.
-- ¨Ò¦p, ¥X²{ abuse-spammer, security crackers, ..
¥Ø«eªºInternet, ¬O TCP/IP based ªºªF¦è, °ò¥»¤W¦h¼ÆªºªF¦è,
¥un¦³ IP routing ´N¥i¥H work.
¦ý¬O, ³o¤@¨Ç²³æªº·Qªk, ¦bºô¸ôtraffic ¤é¼Wªº¤µ¤Ñ, ÁÙ¬O·|¦³«Ü¦h§xÃø.
³\¦hªº°ÝÃD, ³£ªÈµ²¦b¤@°_.
( DNS, WWW, Ftp, News, BBS ... µ¥¨Ï¥Î )
===============================================================
º¥ý, ½Ð¤j®a¬Ý¬Ý©³¤U´XÓ IP addresses, µM«á¸ÕµÛ¦^µª³oӬݦü²³æªº°ÝÃD:
( µª®× ==> See Appendix 1. )
½Ð°Ý§A, ª¾¹D³o´XÓºô§}¬O ¨ºÓ³æ¦ì¦b¨Ï¥Î¶Ü ? ( ©¼¦¹¦³¦óÃö«Y )
- 140.113.1.1, 140.113.23.3
- 140.126.3.9, 140.126.22.6, 140.126.237.12, 140.126.237.156
- 140.127.56.1
- 140.128.57.2
- 203.66.126.225
- 203.68.71.11, 203.68.103.10
===============================================================
°ò¥»¤W, ºô¸ô¬¡°ÊÀWÁcªº¤µ¤Ñ, ºô¸ô³æ¦ìªººÞ²zªÌ, À³¸Ó¦³¤@Ó°_½Xªº»{ª¾,
°£¤F network routing , ¥H¤Î¦UÃþ server ( e.g. Mail, WWW, BBS ... )
«Ø¸m¤§¥~, ÁÙ¥²»Ý³vº¥«Ø¥ß°_¤@¨Ç¨ä¥¦¬ÛÃöªº performance, security/access
control, load balancing µ¥¬ÛÃö½ÒÃD.
Åý§ÚÌ¥ý±q, ³Ì²³æªº¬Ý°_:
-- ¦p¦ó¾a IP addr. ±oª¾¨ä¨Ï¥Î³æ¦ì ?
³oºØ°ÝÃD, ³q±`¦³¨â®M¨t²Î, ¥i¥H¨ÓÀ°¦£¸Ñ¨M:
1) Whois - ¤j²¤, »¡©ú°O¿ý, ºô¸ô¨Ï¥Î»PºÞ²z³æ¦ì. ( ¥]¬AºÞ²zªÌ, ³sµ¸¸ê°T)
- class A, class B, class C and domain zone name e.g.
* 140.113.0.0/16
* nctu.edu.tw
...
2) DNS - °O¿ý, ºô¸ô³æ¦ì¸`ÂI (node) ªº¸ê°T. ( host-based info )
( ²Ó¶µ¬d¸ß , e.g. www.nctu.edu.tw, ...)
------------------------------------------------------------
¤p©n©n (siklo.bbs@bbs.cis.nctu.edu.tw) ´£¨ì:
: ==> ¦b gong1.bbs@csie.nctu.edu.tw (¶ÂÆj) ªº¤å³¹¤¤´£¨ì:
: > ¬O§_¥i¾a ip §ä¥X domain name?©ÎªÌ¦³þ¦ìªB¤Íª¾¹D
: > 203.70.xxx.xx ¥Ñ¦ó³Bµo¥X?°ê¥~¶Ü?
:
: ¦b°ê¤º!!203.70ªº¤À§G¥_¥«»P¥x¤¤¥«³£¦³°Ó·~»PÓ¤H¥Ó½Ð¨ì.
: ±zn§äªºIP¸Ô§}¬O??
: --
¦³¤H»¡, ³oÓ°ÝÃD, ¥i¥H³z¹L DNS ¤Ï¬d¨Ó§@.
¨ä¹ê, ³oÓ°ÝÃD, À³¸Ó¥Î Whois ¬d, ¤ñ¸û¥¿½T.
-------------------------------------------------------------
% whois -h whois.twnic.net 203.70.0.0
%RWhois V-0.3 moe.twnic.net (by Network Solutions V-B0.2.1)
203.70.0.0/24 Event Corp (NET-S2037000/2-CRC10015-TW)
203.70.0.0/16 Institute for Information Industry, Network Business Group (NET-
CIDR-BLKISP-20370-TW)
%ok
-------------------------------------------------------------
203.70.*.* ¬O ¤@°ï class C ªº²Õ¦X, ¥Ø«e¥Ñ SeedNet t³d®Öµo¤À°t.
-- 203.70.0.0/16 ( ³o¤@¦æ)
¦Ü©ó, 203.70.0.0/24 «hªí¥Ü¬O¤@²Õ class C ªº address, ¥Ñ¤@®a¥s
Event Corp. ¨Ï¥Î.
¨Ò¦p, ¦pªG, n¶i¤@¬d 203.70.1.0 ( or something )
% whois -h whois.twnic.net 203.70.1.0 ( µ²ªG, °Ñ¨£ Appendix 2.)
------------------------------------------------------------
¦pªGn¾a IP ¬d±o¨ì domain name, ¥²¶·«eÃD¬O, ³o¨Çºô¸ô³æ¦ìªº DNS t³d¤H,
¤W¤U´å°t¦X, ³£¦³±N¬ÛÃöªº database «Ø°_¨Ó.
¦b°ê¤º, ³o¤@³¡¥÷, ²{ªp¬O :
¤j¦h¼Æ, ³£ÁÙ¨S¦³§Ëªº«Ü¦n.
-----------------------------------------------------------------
-- ¬°¤°»ò, µ{¦¡¤£·|¦Û°Ê«Ø³o¨Ç database©O ?
¦]¬°, forward domain »P reverse domain ¨S¦³µ´¹ïªº¹ïÀ³Ãö«Y.
¤µ¤Ñ, §Ú¦V¬Y¤@ºô¸ô³s½u¤u¥q A, ¥Ó½Ð¤@±ø±M½u, µù¥U¤F¤@Ó forward domain
name. ¹L¤@°}¤l, §Ú¥i¯à¦A¦Vºô¸ô¤½¥q B, ¥t¥~¥Ó½Ð¤@±ø±M½u, ·íµM forward
domain name ÁÙ¬O¤@¼Ë. ¤]³\, ´X¦~«á, ¦³§ó¦X¥G§Ú¦Û¤vªº»Ý¨Dªººô¸ô³s½u¤½¥q
C, ©ó¬O§Ú¨M©w©ñ±óì¥ý A & B ªº±M½u, ¦ý¬O³o®ÉÔ, §ÚÁÙ¬O¨Ï«Ü¦³¥i¯à¥Î
¦P¼Ëªº forward domain, ¶ÈºÞ IP addr. ( revser domain ), ¦´N¤£¤@¼Ë¤F.
-----------------------------------------------------------------
¦³³\¦h³æ¦ì, ³s DNS t³d¤H¥»¨, ³£·d¤£²M¦. §ó¤£n´£¤@¯ë user ¤F.
³o¤@¨â¤Ñ, ¦Û¥Ñ®É³ø, ¦³³ø¾É¤@½g "DES" ªº¬ÛÃöªF¦è, ¨ä¤¤¦³´£¨ì,
»OÆWªº´XÓ¤j¾Ç, ¹Î¹ï¦X§@¥Î¹q¸£¨Ó®i²{ Taiwan Internet ¦b®Õ¶éªº¼ö¼é,
Åý°ê¥~ªº¤H¤h, ¦L¹³²`¨è. ¤×¨ä, NCTU ¦b¨Ï¥Î¹q¸£¼Æ, »P¸ÑÃD¼Æ (key blocks),
«Ü§ÖÅD©~¥@¬É²Ä¤@, °£¤F NCTU ®Õ¶é¹q¸£ªº½T«Ü¦h, ¥t¤@Ó¦]¯À, ´N¬O¦h¦~¥H¨Ó.
NCTU ®Õ¤º, ¤×¨ä¬O±JªÙ³¡¥÷ªº DNS ( forward & reverse ) domain µù¥U¬Fµ¦,
¤ñ¸û¸¨¹ê¦³Ãö.
«ô BBS, WWW µ¥À³¥Î, ²{¦b«Ü¦h¤H, ª¾¹D¨Ï¥Îºô¸ô»Ýn³]©w§¹¥þªº DNS Àô¹Ò,
¦ý¬O, ¨Æ¹ê¤W, ¦h¼Æ¤H©Ò¤F¸Ñªº¥u¦³¤@¥b. «Ü¦h¤H, ¥H¬° DNS ¨t²Îªº¥\¥Î,
´N¥u¬O §Aµ¹Ó ^¤åªº¦WºÙ,¦p bbs.cis.nctu.edu.tw , ¨t²Î¦^¤@Ó IP addr
140.113.23.3, ¦p¦¹¦Ó¤w.
¦³¤@Ó reverse domain name ªºªF¦è, ¤@ª½¥H¨Ó³£³Q¦h¼Æªº¤H©Ò©¿²¤.
( ¨ä¹ê, ³o¤@³¡¥÷, ³q±`¥DnÀ³¸Ó¬O DNS ºÞ²zªÌªº»{ª¾¤£¨¬°ÝÃD)
-- ¤°»ò¬O¤Ï¸Ñ»â°ì¦WºÙ ( WHAT is reverse domain name ? )
-- ¬°¤°»ò»Ýn©w¥ß¤Ï¸Ñ»â°ì¦WºÙ ( WHY reverse domain name ?)
-- ¦p¦ó«Ø¥ß, ¤Ï¸Ñ»â°ì¦WºÙ ( HOW to set up reverse domain name ?)
²Ä 1 Ó°ÝÃD (what), «Ü²³æªº·Qªk, ´
================================
a) forward domain name: µ¹^¤å¦WºÙ --> IP addr.
b) reverse domain name: µ¹IP addr. --> ^¤å¦WºÙ.
¸Ô²Óªº³¡¥÷, ¦³¿³½ìªº¥i¥H¬Ý¬Ý.
- RFC 1033, 1034, 1035, ...
- man named, man resolver
- news://comp.protocols.tcp-ip.domain FAQ
²Ä 2 Ó°ÝÃD (why), ¥Dn¦³´XÓ²z¥Ñ:
=================================
a) ºÞ²z¤Wªº²z¥Ñ ( administration )
¤@Ó IP addr. ¦³µù¥U, ªí¥Ü¦³¤H¨Ï¥Î³oÓ¸`ÂI. ¦b local ¬Ý¨Ó,
¥iÁקK IP addr. ¬Û½Äªº°ÝÃD, ¦b¥~¤H¬Ý¨Ó, ³o¤@Ó³æ¦ì, ¬O¤ñ¸û
well-organized.
·íµM, ²{¦b¦³³\¦hºô¸ô, ¥i¯à·|¨Ï¥Î DHCP µ¥¨Ó§¹¦¨³o¤@³¡¥÷ªº¤u§@.
¦ý¬O, «á¬qªº¶H¼x©Ê·N¸qÁÙ¬O¤@¼Ë¦b.
¦³³\¦hºô¯¸, ·|¥Î¤@¨Ç³nÅé¨Ó²Îp, ³o¤@¨Ç³æ¦ìªº¨Ï¥Î¶q. ¦b°µÂkÃþ®É,
³æ¾a IP addr.¹ê«Ü§xÃø, ¥²»Ý¦³ reverse domain ªº¸ê°T¤~¦n²Îp.
( ¦p¦¹¦¸ªº ¸Ñ DES ¬¡°Ê )
Note:
-----
ªñ¤é, ¬Ý¨ì¤@Ó·|ij°O¿ý, »¡·ç¤h¬¥®áªººÞ²z¾Ç°|, ¨Ï¥Î¤@¨Ç zone ªº
²Îp³nÅé, ±oª¾§ÚÌ»OÆWªº Internet, ³\¦h¸`ÂIªºµnp¸ê®Æ, ¯Ê«Ü¦h.
«Øij§Ú̬ÛÃöªººÞ²z³æ¦ì, ¥[±j¼¾¾É...
b) security/access control control.
³o¤@³¡¥÷¬O¤ñ¸û tricky, ¤ñ¸û¹ê»Úªº°ÝÃD. ¨Ò¦p:
* 140.113.1.1 (ns1.nctu.edu.tw ) ¬O¥æ¤jªº DNS serve ¤§¤@
* 140.126.3.9 ( chpi.edu.tw )¬O¤¤µØ¤u¾Ç°|ªº DNS server ¤§¤@
* 140.126.22.6 ( bbs.nhctc.edu.tw) ¬O·s¦Ë®v°|ªº BBS
* 140.126.110.1 ( linux1.cpshs.hcc.edu.tw) ¦Ë¥_°ª¤¤
* 140.126.237.101 ( a237-101.ts.nctu.edu.tw )
* 203.68.103.10 ( admin.hgsh.hc.edu.tw ) ¬O·s¦Ë¤k¤¤ªº DNS server
* 203.72.160.1 ( hcvspdc.hcvs.hc.edu.tw ) ¬O·s¦Ë°ª¤uªº DNSserver
¥H¤Wªº¨t²Î, ¦³¤@ÓÃö³s©Ê, ´N¬O network traffic routing ³£·|¸g¥Ñ
NCTU ªº router.
§Ṳ́µ¤Ñ, °²³]¦³¤@Óª¬ªp, ¤µ¤Ñµo²{¦³¤@Ó NCTU TS ªº spammer,
µM«á, ¦pªG§A¾×¤F 140.126.*.*, ¨º»ò CHPI, NCHTC,.. µ¥, §A¤]¤@°_¾×¤F.
¦ý¬O, ¦]¬°¦³¤Ï¸Ñµn°O, §A¥i¥H¥u¾× ts.nctu.edu.tw.
¦b¤µ¤éºô¸ô¬É, ³o¬O¤@ӫܹê»Úªº°ÝÃD:
--- email, news, ... µ¥, ³o¤@¨ÇªF¦è, ³£¥Î±o¤W.
c) performance & load balancing support.
part b ªº³¡¥÷, ¥Î°µºÞ¨î, ¦³ÂI®ø·¥ªº·N¸q, ¥i¯à«Ü¦h¤H(ºÞ²zªÌ), ¤£¤@©w
»{¬°¦³»Ýn. ±µ¤U¨Ó, ³o¤@ÂI´N¤ñ¸û¦³¿n·¥, ªº¥Î·N.
²{¦b, ¤j®a WWW proxy, Ftp/Mirror server, News µ¥¥Î±o«Ü¦h.
³o¤@Ã䦳ÓÃøÃD, ´N¬O¥un¦³¤H»¡, ¨º¤@Ó proxy server «Ü¦n¥Î,
¤j®a´N·|»°µÛ¥h try, è¶}¨Ï¤]³\¬O³o¼Ë, ¥i¯à¹L¤@°}¤l, ³o¤@Ó¨t²Î
¤Î©Ò¦bªººô¸ô, ´N¥i¯à³Q¾Þ¨ìÄê¤F. ±µ¤U¨Ó, ´N¦³¤@°ï¤H, ¶}©l©ê«è.
¨ä¹ê, ©Ò¦³ proxy/caching/mirror site ªº³]¥ß, ¦³¤@ӳ̲³æªº
¥Ø¦a¤§¤@, ´N¬O°µ load balancing, ¤]´N¬O¤j®aÀ³¸Ó¿ï¤@Óºô¸ô¦ì§},
Â÷¦Û¤vºô§}¤ñ®Õªñ (½Ðª`·N, ºô§}©M¦a²z¦ì¸m, ¤£¤@©w¦³¦P¼Ëªº»·ªñÃö«Y )
ªº¦a¤è¨Ï¥Î, ³q±`¬°¤FÅU performance, server ¥»¨, ¥i¥H®Ú¾Úºô§}¨Ó
§@ services ½d³òªº³]©w. ¥H´Á, ¾ãÅéªA°È¯àºû«ù¦b¤@©w¤ô·Ç.
Á|¨Ò¦Ó¨¥, ¤µ¤Ñ NCTUCCCA.nctu.edu.tw ( NCTUCCCA.edu.tw ¤Î¨ä¥¦ AFS/FTP
mirror site ±¡ªp§¹¥þ¤@¼Ë), §Æ±æ«Øij, TANet ¤W, ·s¦Ë¥H«nªº user, ¥Î
·s¦Ë³o¤@¨t²Î.
©ÎªÌ, §ÚÌ·|«Øij, ¨Ó¦Û HiNet ¨Ó½u³æ¦ì, ¥i¯à¥i¥H¸Õ ftp.hinet.net, or
NCTUCCCA.edu.tw ( ¦P¼Ë¨Ó¦Û SeeNet ³s½u¤U´å³æ¦ì, ±µ ftp.seed.net.tw )
³æ³æ¬Ý¤@Ó, 203.68.XXX.YYY, 192.192.WWW.ZZZ, ... ¤§Ãþªº IP address,
¦pªG§A¬O¨t²ÎºÞ²zªÌ, ½Ð°Ý§A¦p¦ó§@ load balancing.
¦Ó¥B, §Ú̪¾¹D, ¦³³\¦h³æ¦ì, ¾Ö¦³¤£³sÄòªº class C, ¦n´X²Õ. ¦pªG,
reverse domain µnp, ¨S¦³§@, «e±Á¿ªº³o¤@¨Ç, ³£¥Î¤£¤W.
¹³³oÃþªº°µªk, ¦b squid µ¥ WWW proxy/caching server ¦b³] access control
»P neighbor caching server ®É, «D±`¦³¥Î.
³Ì«á, ÁÙ¦³¤@¨Ç, ¸ò DNS ¬d¸ß¬ÛÃöªº°Ê§@, ´N¬O caching ªº¹ê»Ú·N¸q.
¥Ø«e, ´X¥G©Ò¦³ªººô¸ô³s½uµ{¦¡, ³£¦³¤Ï¸Ñ¬d¸ßªºµ{¦¡½X, ¼g¦bùر.
-- ¤]´N¬O, ¤£ºÞ¨Ï¥Î telnet, ftp, www, news, ... µ¥¥un§A¤@³s¤W
remote site, ¹ï¤èªº¨t²Î, ³£·|§@¤Ï¦V¬d¸ß, ¥H¨ú±o¦anªº host/ip ¸ê°T.
¦Ó³o¤@¨Ç reverse DNS query, °ò¥»¤W, ·íµM³£¬O³z¹L DNS ¨Ó§@.
-- ¤j®a, ¥i¯à¤£·|ª`·N¨ì, ¥un¦³ connection ( ¯S§O¬O TCP ), ´N¤@©w·|¬d.
DNS server ¬°¤F¦]À³, ³o¨Ç¤j¶qªº DNS query, ³Ì¦ÛµMªº°µªk, ´N¬O caching.
¥un«e±ªº user °Ý¹LªºªF¦è, ¥unºô¸ô¤W, §ä±o¨ìªº DNS responsee ´N·|±N
³o¤@µ§¸ê®Æ°O¤@¬q´Á¶¡ ( ®É¶¡ªøµu, °ò¥»¤W¥Ñremote DNS server ¨M©w)
¦pªGµy«á¦³ user °Ý¬Û¦P°ÝÃD, °¨¤W´N¥i¥H¥N¬°¦^µª.
¦ý°ÝÃD¬O, ³oºØ caching , ¥u¦³¦b remote site ¦³´£¨Ñ reverse domain name
¤~¦³. ¦pªG, ¨S¦³³oºØ¸ê°T, ¨º»ò³oºØ host ¥X¨Óªº³s½u, ¨ì¥ô¦óºô¯¸, ¨C¦¸
ªº¬d¸ß, ³£·|«ÀY¨Ó, µM«á¸g¹L worst case ªº timeout, µM«áµ{¦¡¤~·|©ñ±ó.
ÁöµM, ¦U§Oºô¯¸³£¥uªá«Ü¦hªº®É¶¡, user ¥i¯à¤£·|ı±o, ¦ý¬O¤j®a¦³¨S¦³·Q¹L,
¸Ó³æ¦ìªº DNS server, ·|¤@ª½¦b service (loop) ³oÃþ¨Sµ²ªGªº query.
Á|¤@Ó©ú¥Õ¤@ÂIªº¨Ò¤l, HiNet (³\¦h ISP ¥Ø±¡³£®t¤£¦h) ªº ¼·±µ¥Î IP,¤@ª½
³£¨S¦³§¹¾ãªº reverse ¤Ï¸Ñµn°O ( ¦Ü¤Öºô¸ô¤W³£¬d¤£¨ì), ©Ò¦³ HiNet dialup
user, ¼·³q«á, ¦pªG¨Ï¥Î¦UÃþªº services, ³s¨ì¨ä¥¦ªº site, ¤£ºÞ¬O telnet,
ftp, www, news, ... µ¥, remote site, ³£·|°µ reverse domain ¬d¸ß. ·íµM,
µ²ªG³£¨S¦³ªF¦è. (-- ¤l¤J¤Ó¼q, ¨C¨Æ°Ý :-) !
¦]¬°³o¤@¨Ç IP addr. ³£µn°O¬°¥Ñ HiNet ¨Ï¥Î, ip addr. ªº¤Ï¦V¬d¸ß, ·íµM·|¸ß
DNS Åé¨t, §ä¨ì HiNet ªº DNS server.
¦]¬°, ¨ä¥¦ªº DNS server µLªk¦b HiNet ªº DNS server ¤W, §ä¨ì¦h¼Æªº¼·
±µ IP, ¦]¦¹µLªk¶i¦æ¥²nªº caching. ¨C¦¸³o¤@Ãþªº reverse DNS query,
¤S·|¦A¨ì HiNet DNS server ¨Ó°Ý¤@¦¸.
µ²ªG, µL§Î¤¤, HiNet ªº DNS server ªº loading, ³£¬Ù¤£¤U¨Ó.
-- ¨ä¥¦ªº DNS server ·íµM¤]³s±a¨ü©ì²Ö.
¹³ HiNet ¤§Ãþªº ISP, «Ü¥i¯à«Ü¦³¿ú, ¤£¦b¥G, «Ü®e©ö´N¥i¥Hªá¿ú, ¶R§ó
powerful ªº¨t²Î, §@ DNS server, «ØÀW¼e§ó°ªªººô¸ô, ¨ÓÀ³¥I§ó°ªªº network
traffic »Ý¨D.
µM«á, ¤@¯ë user ¯à§@¤°»ò ? ³øºp, ³o¨Ç®ÉÔ, §A°£¤Fµ¥ DNS query timeout,
§A¤°»ò¤]¤£¯à°µ.
·íºô¸ôÁÙ¥u¬O, ´X¸UÓ¤Hªº®ÉÔ, ÀH«K¥Î°Õ !
¦ý¬O, ·Q·Q HiNet ³£¤w¸g¸¹ºÙ¦³ 25 ¸U user; ·í »OÆWªººô¸ô¬É, ´Á±æ±À°Ê
¤T¦~¤º 300 ¸U¤H, ¤Wºô®É, ³o¨Ç delay, ³o¨Ç®ÄÀ³³£·|¥[°_¨Ó.
¹q¸£ºô¸ô, ²z½×¤W¬O 24 ¤p®É¤£°±ªº, ³o¤@¨è services ¤£¤FªºªF¦è, ¤U¤@¨èªº
user ³£¥²¶·,¤]¥u¯à©Ó¨ü, ¥ý«e user ¦b¨t²Î©Ò¯d¤Uªº service load.
-- ·Q·Q, ¬ü°êªº AOL ¸¹ºÙ¦³ 800 ¸U¨Ï¥ÎªÌ, ¦pªG¥L̤]³o¼Ë, ¥i´N¦³°÷¶æ !
¦pªG, §A¤£·Q, ¤j®a˾`, ¦³¾÷·|´NÀ³À³¸Ó¸ò§Aªº ISP complaint, ¥u¦³§ó¦h
ªº¤H¤F¸Ñª¬ªp, ³o¨Ç³æ¦ìºÞ²zªÌ, ¤]³\¤~·|ª`·N¨ì³oºØ±¡ªp. ³o¼Ë, ¤j®a¤~·|
¦³§ó²z·Qªººô¸ôÀô¹Ò¥i¥Î, ¤£P©ó¤Ó§Ö´c¤Æ.
²Ä 3 Ó°ÝÃD ( how to ):
=======================
1) ²Ä ¤@Ó²³æªº°ÝÃD:
§Ú«ç»òª¾¹D, §Ú©Ò¨Ï¥Îªº IP addr. ¦³¨S¦³¤Ï¸Ñµn°O.
¦³³\¦h§@ªk, ¥i¥HÀ°¦£¸Ñµª.
a) ¦pªG, §A¦³¾÷·|¨Ï¥Î telnet, ³s¤W ¬Y remote site, ( Unix ¤§Ãþ),
¥i¥H¨Ï¥Î last µ{¦¡.
³q±`, °£«D¦³³]©w°ÝÃD, ¦³¤Ï¸Ñµù¥UªÌ, §A¥i¥H¬Ý¨ì ^¤å¦WºÙ, ¥u¬Ý¨ì
IP addr. ªÌ, ´N¬O¤Ï¸Ñµù¥U¦³°ÝÃD. ( ¨Ò¥~, §Ú¦b freebsd ªº¨t²Î,
¬Ý¹L¤@¨Ç©_©Çªº²{¹³, ©ú©ú¦³¤Ï¸Ñ¾n¥U, ¥i¨Ï¦³¨Ç§ä±o¨ì, ¦³¨Ç§ä¤£¨ì,
n¤£¬O³oÓ¾÷¾¹³]©w¦³°ÝÃD, ¥i¯à´N¬O¸Óª©ªº kernel ¦³ bug ? )
------------------------------------------------------------------------
ftp% last |more
cschen pts/24 NCTU.edu.tw Sun May 11 12:56 still logged in
ftp ftp 203.98.11.203 Sun May 11 12:56 - 12:56 (00:00)
ftp ftp 168.95.10.47 Sun May 11 12:56 - 12:56 (00:00)
ftp ftp dialup13.nhctc.e Sun May 11 12:55 - 12:55 (00:00)
...
[delete]
------------------------------------------------------------------------
b) ¨Ï¥Î news reader µ¥³nÅé, °e¥X¤@½g post, µM«áÀ˵ø article header.
¨ä¤¤, "NNTP-Posting-host:" ³oÓ header,
¦³¤Ï¸ÑªÌ, ´N¬O°O¿ý^¤å¦WºÙ, ¨S¦³ªÌ, ´N¬O°O¿ý IP.
c) ±H¥X e-mail, ¹³ sendmail v8 ¤§ÃþªºÂà±H relay, ³£·|°O¿ý, ì©l¯¸.
¦³¤Ï¸ÑªÌ, ´N·|¬Ý¨ì, ^¤å¦WºÙ, ¥u¦³ IP addr. ªÌ, ´N¬O¨S¦³º¡¸Ñµn°O.
-- ·íµM, ³o®ÉÔ¥u¦n½Ð¥L¤H, ¥N¬° check.
d) ¨ä¥¦¤èªk. ( ¦p nslookup, dig, ... )
-- or, ª½±µ°Ý ³æ¦ì DNS ºÞ²zªÌ.
2) ²Ä¤GÓ°ÝÃD,
¦pªG, §Aè¦n¬O³æ¦ì DNS ºÞ²zªÌ. §A̪º reverse domain ÁÙ¨S³],
§An«ç»ò¿ì ?
a) º¥ý, «Ø¥ßÆ[©À. forward domain »P reverse domain, ¤W¤U´å¤£¤@©w¬Û¦P.
Á|¨Ò¦Ó¨¥, ·s¦Ë®v°|©Ò¦bºô¸ô»Pºô°ì,
nhctc.edu.tw ³oÓ forward domain zone, ¤W´å¾n¥U edu.tw ¥Ø«e¥Ñ MOECC t«h.
¦ý¬O¤Ï¸Ñ 140.126.23.0, 140.126.32.0, 140.126.33.0 ªº DNS µn°O, «h
¥²»Ý°t¦X NCTU ³o¤@Ãä. ( ¥Ø«e 140.126.*.* µn°O, ¥Ñ NCTU t³d)
¤S¨Ò¦p, hcvs.hc.edu.tw ·s¦Ë°ª¤u.
(forward) hcvs.hc.edu.tw ¦b hc.edu.tw µn°O DNS server, --> NCTU.
(reverse) 203.72.160.0 ¦b MOECC µn°O.
-- ¬°¤°»ò, ¤£¦b NCTU µn°O ?
¦]¬°, class C ªº address ¨Ï¥Î, ¤Àªº«Ü´².
Á|¨Ò¦Ó¨¥, 203.72.1.0, 203.72.200.0, .. µ¥«Ü¥i¯à,
¤À§G¦b¥þ¥x¦U¦a, ³\¦h¤£¦Pªº³æ¦ì. ¦]¦¹, ¥Ñ IP ¤À°t
³æ¦ì, ²ÎÄw¤À°tºÞ²z.
¦P¼Ëªº±¡§Î, ¦b HiNet, ¦A SeedNet, ... ¦UÓ³æ¦ì³£·|¥X²{.
¦]¦¹, ¤@©wn§ä¹ït³d³æ¦ì, §ä¹ï¤H.
b) ´N¹ê»Ú§Þ³N¦Ó¨¥, ¯u¥¿ªº reverse domain name, ¥¿¦¡ªí¥Üªk, ¤@¯ë¤H
¬Ý°_¨Ó, ¥i¯à¦³ÂI©Ç.
¨Ò¦p: ( ©Ò¥H»¡, reverse )
ns.nctu.edu.tw ( 140.113.250.135 )
ªí¦¨:
135.250.113.140.in-addr.arpa.
°ò¥»ªº¥Î·N¬O¥é·Ó, forward domain, ½d³ò¤jªº¦b¥kÃä, ¦]¦¹¤Ï¹L¨Ó¼g.
¦Ü©ó, in-addr.arpa, ¥u¬O¤@Ó convention, ¤´°÷Åýµ{¦¡³]pªÌ, ¤£»Ý
קï¤Ó¦h, ´N¥i¥H±N¨â³¡¥÷ merge °_¨Ó, ¤@°_¥Î.
¯u¥¿ªº³]©w, ¦p¦³ºÃ¸q, ½Ð°Ñ¦Ò.
-- RFC 1035 ªº»¡©ú.
-- man named
¦p·Q§ä example °Ñ¦Ò, ¥i¥H¨ì
----------------------------------------------
ftp://ftp.nctu.edu.tw/NCTU/DNS/*
=======================================================================
Appendix 1:
Answer:
- ns1.nctu.edu.tw/NCTU.edu.tw ( 140.113.1.1 )
- bbs.cis.nctu.edu.tw ( 140.113.23.3 )
- chpi.edu.tw ( 140.126.3.9 )
- bbs.nhctc.edu.tw ( 140.126.22.6 )
- serv.hceb.edu.tw ( 140.126.237.12 )
- a237-156.ts.nctu.edu.tw ( 140.126.237.156 )
- NCHU ºÞÁÒ¤U ( ¤¤³¡ªº¬Y¾Ç®Õ hostô )
- NSYSU ºÞÁÒ¤U ( «n³¡ªº¬Y¾Ç®Õ³æ¦ìªº host)
- sunwk1.tpe.nctu.edu.tw ( 203.68.71.11; DNS server)
- admin.hgsh.hc.edu.tw ( 203.68.103.10 ; DNS server)
Appendix 2
-----------
% whois -h whois.twnic.net 203.70.1.0
¥t¤@ºØ§@ªk: ª½±µ¥Î telnet.
% telnet whois.twnic.net 43
203.70.1.0
-----------------------------------------------------------------
%RWhois V-0.3 moe.twnic.net (by Network Solutions V-B0.2.1)
International Data Group Communications Taiwan (NET-S2037010/2-CRT10027-TW)
2f,no116,hou kang rd,shin-lin
Taipei, Taiwan, R.O.C.
Netname: S2037010/2-CRT10027-TW
Class IP Netnumber: 203.70.1.0
IP Netnumber: 203.70.1.0/24
Administrative Contact:
Pong, Kuo-Chin (SCRT10027) arthur.peng@mitac.com.tw
866 2-5012650 ext.7654
Technical Contact:
Pong, Kuo-Chin (SCRT10027) arthur.peng@mitac.com.tw
866 2-5012650 ext.7654
Record Created on 01-Apr-96.
Record Last Updated on 01-Apr-96.
Domain System inverse mapping provided by:
www.idg.com.tw 203.70.1.1
%ok
---------------------------------------------------------------
--
Joe. C.S.Chen, cschen@ns.nctu.edu.tw