DNS被劫持了？關於e144.ca.s.tl88.net
> server 202.106.0.20
Default Server: gjjline.bta.net.cn
Address: 202.106.0.20
> www.cisco.com
Server: gjjline.bta.net.cn
Address: 202.106.0.20
Non-authoritative answer:
Name: e144.ca.s.tl88.net
Address: 210.192.112.170
Aliases: www.cisco.com, www.cisco.com.akadns.net
geoprod.cisco.com.akadns.net, www.cisco.com.edgekey.net
www.cisco.com.edgekey.net.globalredir.akadns.net
-------------------------------------------------------------------------------------------
e144.ca.s.tl88.net是個什麼東西，whois查在深圳
按照DNS查詢過程，不應該查到e144.ca.s.tl88.net。
是不是被劫持了？
請各位老師講講
《解決方案》
C:\Documents and Settings\Administrator>dig www.cisco.com +trace
; <<>> DiG 9.4.3-P2 <<>> www.cisco.com +trace
;; global options: printcmd
. 69119 IN NS A.ROOT-SERVERS.NET.
. 69119 IN NS L.ROOT-SERVERS.NET.
. 69119 IN NS E.ROOT-SERVERS.NET.
. 69119 IN NS B.ROOT-SERVERS.NET.
. 69119 IN NS K.ROOT-SERVERS.NET.
. 69119 IN NS I.ROOT-SERVERS.NET.
. 69119 IN NS C.ROOT-SERVERS.NET.
. 69119 IN NS D.ROOT-SERVERS.NET.
. 69119 IN NS G.ROOT-SERVERS.NET.
. 69119 IN NS H.ROOT-SERVERS.NET.
. 69119 IN NS F.ROOT-SERVERS.NET.
. 69119 IN NS M.ROOT-SERVERS.NET.
. 69119 IN NS J.ROOT-SERVERS.NET.
;; Received 464 bytes from 202.99.166.4#53(202.99.166.4) in 46 ms
com. 172800 IN NS M.GTLD-SERVERS.NET.
com. 172800 IN NS H.GTLD-SERVERS.NET.
com. 172800 IN NS C.GTLD-SERVERS.NET.
com. 172800 IN NS G.GTLD-SERVERS.NET.
com. 172800 IN NS B.GTLD-SERVERS.NET.
com. 172800 IN NS D.GTLD-SERVERS.NET.
com. 172800 IN NS F.GTLD-SERVERS.NET.
com. 172800 IN NS J.GTLD-SERVERS.NET.
com. 172800 IN NS K.GTLD-SERVERS.NET.
com. 172800 IN NS E.GTLD-SERVERS.NET.
com. 172800 IN NS L.GTLD-SERVERS.NET.
com. 172800 IN NS I.GTLD-SERVERS.NET.
com. 172800 IN NS A.GTLD-SERVERS.NET.
;; Received 503 bytes from 192.58.128.30#53(J.ROOT-SERVERS.NET) in 46 ms
cisco.com. 172800 IN NS ns1.cisco.com.
cisco.com. 172800 IN NS ns2.cisco.com.
;; Received 99 bytes from 192.12.94.30#53(E.GTLD-SERVERS.NET) in 578 ms
www.cisco.com. 3600 IN CNAME www.cisco.com.akadns.net.
akadns.net. 128746 IN NS zb.akadns.org.
akadns.net. 128746 IN NS za.akadns.org.
akadns.net. 128746 IN NS use4.akadns.net.
akadns.net. 128746 IN NS use3.akadns.net.
akadns.net. 128746 IN NS zd.akadns.org.
akadns.net. 128746 IN NS zc.akadns.org.
akadns.net. 128746 IN NS asia9.akadns.net.
akadns.net. 128746 IN NS eur1.akadns.net.
akadns.net. 128746 IN NS usw2.akadns.net.
;; Received 387 bytes from 64.102.255.44#53(ns2.cisco.com) in 281 ms
C:\Documents and Settings\Administrator>dig www.cisco.com.akadns.net
; <<>> DiG 9.4.3-P2 <<>> www.cisco.com.akadns.net
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 653
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 9, ADDITIONAL: 2
;; QUESTION SECTION:
;www.cisco.com.akadns.net. IN A
;; ANSWER SECTION:
www.cisco.com.akadns.net. 168 IN CNAME geoprod.cisco.com.akadns.net.
geoprod.cisco.com.akadns.net. 168 IN CNAME www.cisco.com.edgekey.net.
www.cisco.com.edgekey.net. 15036 IN CNAME www.cisco.com.edgekey.net.global
redir.akadns.net.
www.cisco.com.edgekey.net.globalredir.akadns.net. 3469 IN CNAME e144.ca.s.tl88.n
et.
e144.ca.s.tl88.net. 20 IN A 60.28.176.170
;; AUTHORITY SECTION:
ca.s.tl88.net. 847 IN NS n1ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n4ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n2ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n3ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n6ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n5ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n7ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n0ca.s.tl88.net.
ca.s.tl88.net. 847 IN NS n8ca.s.tl88.net.
;; ADDITIONAL SECTION:
n1ca.s.tl88.net. 879 IN A 123.103.103.34
n4ca.s.tl88.net. 879 IN A 210.192.112.8
;; Query time: 46 msec
;; SERVER: 202.99.166.4#53(202.99.166.4)
;; WHEN: Tue Nov 10 15:53:54 2009
;; MSG SIZE rcvd: 400
www.cisco.com被CNAME了多次，最後一次被CNAME到了e144.ca.s.tl88.n
et. 結果看是CDN運營商在作怪
[ 本帖最後由 llzqq 於 2009-11-10 15:58 編輯 ]
《解決方案》
思科就是牛哈。CDN都部署開了。
《解決方案》
Amazon的cdn都商業化了:em17:
