事情是這樣子開始的......
話說,本人會用某個網站的反應速度,來作為網路連線的真實狀況;不過,這兩天發現,除了門口之外,裡面都進不去,該點的能點的想點的,統統不行。
# nslookup
> facebook.com
Server: 192.168.1.1
Address: 192.168.1.#53
Non-authoritative answer:
Name: facebook.com
Address: 69.63.184.142
Name: facebook.com
Address: 69.63.187.17
Name: facebook.com
Address: 69.63.187.19
Name: facebook.com
Address: 69.63.181.11
Name: facebook.com
Address: 69.63.181.12
來檢查一下,各種遊戲、應用程式的大本營:
> apps.facebook.com
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
Name: apps.facebook.com
Address: 8.7.198.45
好樣的,不假思索,直接有回應;但,總覺得似乎有點怪異,讓我們換一台Server來查詢一下:
> apps.facebook.com
Server: 168.95.1.1
Address: 168.95.1.1#53
Non-authoritative answer:
apps.facebook.com canonical name = www-college.facebook.com.
Authoritative answers can be found from:
facebook.com nameserver = ns2.facebook.com.
facebook.com nameserver = dns05.sf2p.tfbnw.net.
facebook.com nameserver = dns04.sf2p.tfbnw.net.
facebook.com nameserver = ns1.facebook.com.
ns2.facebook.com internet address = 204.74.67.132
dns05.sf2p.tfbnw.net internet address = 69.63.176.9
dns04.sf2p.tfbnw.net internet address = 69.63.176.8
ns1.facebook.com internet address = 204.74.66.132
而有問題的回應則是:
> set type=any
> apps.facebook.com
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
Name: apps.facebook.com
Address: 8.7.198.45 <------------------ 被污染而造假的紀錄
Authoritative answers can be found from:
facebook.com nameserver = dns05.sf2p.tfbnw.net.
facebook.com nameserver = ns1.facebook.com.
facebook.com nameserver = ns2.facebook.com.
facebook.com nameserver = dns04.sf2p.tfbnw.net.
ns1.facebook.com internet address = 204.74.66.132
ns2.facebook.com internet address = 204.74.67.132
dns04.sf2p.tfbnw.net internet address = 69.63.176.8
dns05.sf2p.tfbnw.net internet address = 69.63.176.9
然而,真正的 www-college.facebook.com. 並不是在被污染的機器上的紀錄所指出的地方:
# nslookup
> set type=any
> server 168.95.1.1
Default server: 168.95.1.1
Address: 168.95.1.1#53
> www-college.facebook.com.
Server: 168.95.1.1
Address: 168.95.1.1#53
Non-authoritative answer:
Name: www-college.facebook.com
Address: 69.63.186.12 <---------- 正確的紀錄
Authoritative answers can be found from:
www-college.facebook.com nameserver = glb01.ams1.tfbnw.net.
www-college.facebook.com nameserver = glb01.lhr1.tfbnw.net.
www-college.facebook.com nameserver = glb01.ash1.tfbnw.net.
www-college.facebook.com nameserver = glb01.hkg1.tfbnw.net.
www-college.facebook.com nameserver = glb01.sf2p.tfbnw.net.
www-college.facebook.com nameserver = glb01.snc1.tfbnw.net.
www-college.facebook.com nameserver = glb01.dfw1.tfbnw.net.
glb01.ams1.tfbnw.net internet address = 69.63.191.219
glb01.lhr1.tfbnw.net internet address = 69.63.191.91
glb01.ash1.tfbnw.net internet address = 69.63.185.11
glb01.hkg1.tfbnw.net internet address = 69.63.185.86
glb01.sf2p.tfbnw.net internet address = 69.63.176.101
glb01.snc1.tfbnw.net internet address = 69.63.179.22
glb01.dfw1.tfbnw.net internet address = 69.63.185.78
唉呀呀,好樣的,被改到火星去了 XD