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不好意思,请教一下,装了shadowvpn,但不能访问Instagram和twitter,但访问facebook和youtube是正常的 #77

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dover opened this issue Dec 25, 2014 · 4 comments

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@dover
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dover commented Dec 25, 2014

不好意思,请教一下,装了shadowvpn,但不能访问Instagram和twitter,但访问facebook和youtube是正常的。同一个VPS,装的shadowsocks,能正常访问Instagram、twitter、facebook、youtube。

请教一下,这会是什么原因呢?

@aa65535
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aa65535 commented Dec 25, 2014

使用上的问题要学会自己排查, issues 不是交流使用这种问题的地方。

  • 排除 DNS 污染。
  • shadowsocks 和 shadowvpn 在 DNS 分别是怎么设置的?
  • 在路由上使用 traceroute instagram.com 跟一下路由。

@JohnnySun
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试试看是不是因为dns污染

@aa65535 aa65535 closed this as completed Dec 26, 2014
@linhua55
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我的现象和你的一样,是mtu的问题,默认的mtu值对于你的网络环境来说太高了。测试自己的mtu是多少,然后做减法
for wireless network,I advice you to test your real mtu value. for reference:
MTU of PPPoE #53
Max MTU: How do I find mine?
for windows
ping -f -l 1472 www.baidu.com
for linux
ping -s 1472 www.baidu.com
for example,my mtu is 1452,and the mtu value in client.conf server.conf should be 1452-20-8-24=1400

@dover
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dover commented Jan 27, 2015

@linhua55 感谢

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