1. watchNS/gochagocha.org

../gochagocha.org/2 ../gochagocha.org/3


watchNS/strange-x.comにも依存している。

-- ToshinoriMaeno 2015-12-20 01:32:06

%dnsq a g.server.gochagocha.org d0.org.afilias-nst.org

1 g.server.gochagocha.org:
104 bytes, 1+0+2+1 records, response, noerror
query: 1 g.server.gochagocha.org
authority: gochagocha.org 86400 NS green.ribbon.to
authority: gochagocha.org 86400 NS dns.gochagocha.org
additional: dns.gochagocha.org 86400 A 153.150.14.90

%dnsq a g.server.gochagocha.org 153.150.14.90

1 g.server.gochagocha.org:
138 bytes, 1+1+2+2 records, response, authoritative, noerror
query: 1 g.server.gochagocha.org
answer: g.server.gochagocha.org 7200 A 153.150.14.85
authority: gochagocha.org 7200 NS dns.gochagocha.org
authority: gochagocha.org 7200 NS dns.strange-x.com
additional: dns.strange-x.com 86400 A 153.150.14.90
additional: dns.gochagocha.org 7200 A 153.150.14.90

ここにある strange-x.com が危険だ。whois/strange-x.com

-- ToshinoriMaeno 2015-12-20 01:47:33

まともなキャッシュサーバはこのadditionalは捨てる。w

additional: dns.strange-x.com 86400 A 153.150.14.90

2. 8.8.8.8 の返事

$ dig -t ns gochagocha.org @8.8.8.8

; <<>> DiG 9.9.5-3ubuntu0.6-Ubuntu <<>> -t ns gochagocha.org @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36318
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;gochagocha.org.                        IN      NS

;; ANSWER SECTION:
gochagocha.org.         7199    IN      NS      dns.gochagocha.org.
gochagocha.org.         7199    IN      NS      dns.strange-x.com.

;; Query time: 124 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sun Dec 20 11:05:45 JST 2015
;; MSG SIZE  rcvd: 92