浏览器是无法直接打开 google.com 的，但是 ping google.com 的结果却显示为网络好好的，还不慢，请问是怎么回事？

[qceytzn]

ping google.com

PING google.com (172.217.26.110) 56(84) bytes of data.

64 bytes from kix05s01-in-f14.1e100.net (172.217.26.110): icmp_seq=1 ttl=49 time=127 ms

64 bytes from kix05s01-in-f14.1e100.net (172.217.26.110): icmp_seq=2 ttl=49 time=118 ms

64 bytes from kix05s01-in-f14.1e100.net (172.217.26.110): icmp_seq=3 ttl=49 time=120 ms

64 bytes from kix05s01-in-f14.1e100.net (172.217.26.110): icmp_seq=4 ttl=49 time=126 ms

64 bytes from kix05s01-in-f14.1e100.net (172.217.26.110): icmp_seq=5 ttl=49 time=127 ms

64 bytes from kix05s01-in-f14.1e100.net (172.217.26.110): icmp_seq=6 ttl=49 time=131 ms

^C

--- google.com ping statistics ---

6 packets transmitted, 6 received, 0% packet loss, time 5005ms

rtt min/avg/max/mdev = 118.941/125.382/131.505/4.290 ms

[xiaoz]

楼主不知道 dns 污染？

[qceytzn]

@xiaoz 听说过， google 不能访问就是因为这个？

[lslqtz]

@xiaoz 我得说一下，这不是 DNS 污染。
DNS 污染后，解析到的 IP 是错误的，并且无法 ping 通，而这个域名我实测可以打开。
@qceytzn 我想应该是 http 劫持，可以试试看用 https 连接。运气爆棚？
C:\Users\lslqtz>curl -I -H "Host:www.google.com.hk" https://kix05s01-in-f14.1e100.net --insecure
HTTP/1.1 200 OK
Date: Sat, 15 Oct 2016 00:10:36 GMT
Expires: -1
Cache-Control: private, max-age=0
Content-Type: text/html; charset=Big5
P3P: CP="This is not a P3P policy! See https://www.google.com/support/accounts/answer/151657?hl=en for more info."
Server: gws
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
Set-Cookie: NID=88=goyag4RIHuQipVzlUUB5IvPJzBl_rDv4wPTyUHdZPE9t_8LSFGwGqAlidEaa2qXmnKUELKLz9DKOL3lwBf-uDh-td17CiduqvzDCPDHxz_vQXULiPiA342REvpZLXBXV; expires=Sun, 16-Apr-2017 00:10:36 GMT; path=/; domain=.google.com.hk; HttpOnly
Alt-Svc: quic=":443"; ma=2592000; v="36,35,34,33,32"
Transfer-Encoding: chunked
Accept-Ranges: none
Vary: Accept-Encoding


C:\Users\lslqtz>

[lslqtz]

C:\Users\lslqtz>curl -I -H "Host:www.google.com.hk" kix05s01-in-f14.1e100.net
curl: (56) Recv failure: Connection was reset

C:\Users\lslqtz>
问题我想很明显了

[LGA1150]

强制 https