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x*r
发帖数: 11073 | 3 Social Science:
The Benefits of Multilingualism
Jared Diamond
Geography Department, University of California Los Angeles, Los Angeles, CA
90095-1524, USA.
E-mail: j******[email protected]
Multilingualism—the ability to understand and speak several languages—is
exceptional in the United States but common elsewhere, especially in small-
scale traditional societies. For instance, once while I was camped with some
New Guinea Highlanders conversing simultaneously in several local languages
, I asked ea... 阅读全帖 |
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w***s
发帖数: 7132 | 4 【 以下文字转载自 Business 讨论区 】
发信人: walks (踏实做事，诚恳做人), 信区: Business
标 题: 转载------------三十多个国家和地区的Business Culture
发信站: BBS 未名空间站 (Fri May 20 21:02:55 2011, 美东)
三十多个国家和地区的Business Culture
2011-04-08 11:26:57 来自: Seraph(中庸之道)
在Leadershp In Organiztion这门课里面，有一章是探讨cuture，每个人都需要写三条
给外国人在自己国家做生意的建议，老师最后搜集整理了发给了大家。因为是写给同学
的，所以大多数都相当真实。非常有意思，也很revealing! 多读几个国家，you'll be
amazed by the the similarity and difference among different cultures!
Tips for Doing Business in my Country
London Business School
Class of... 阅读全帖 |
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KG
发帖数: 515 | 5 1. Try unplug ur atv and tv, wait for a min or 2, then plug back in ur tv
first, then atv. This could be due to a failed hdcp handshake.
2. Depends on whether phs300 supports ur iphone. It works great with my
BlackBerry Storm 2.
★ Sent from iPhone App: iReader Mitbbs 6.81 - iPad Lite |
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b*****x
发帖数: 3786 | 6 ipad 就说 timeout
OpenVPN server 的 log 说 TLS handshake failed.
网上好像说 openvpn 在 64 bit （ipad air) 下不工作， 但那已经
是 12/2013 的事了，难道到现在还没出 patch? |
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g******e
发帖数: 998 | 7 如果http://a.mycompany.com/ and http://b.mycompany.com/在一个server上 （virtual hosting），一个ip， 1个SSL license 就可以了吗？
from http://en.wikipedia.org/wiki/Virtual_hosting， ‘Another issue with virtual hosting is the inability to host multiple secure websites running Secure Sockets Layer or SSL. Because the SSL handshake takes place before the expected hostname is sent to the server, the server doesn't know which certificate to present when the connection is made.’- but in my case， 我有一个license 不正好吗？
我有一个app，需 |
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z*****n
发帖数: 7639 | 8 头四个包：
1) 199 -> 1 SYN
2) 1 -> 199 SYN,ACK % 说明server响应链接请求
3) 199 -> 1 ACK % 到此TCP connection handshake正常
% 这个有问题：
4) 199 -> 1 FIN % client 不应该发FIN
% 下面client 又发了个SYN
5) 199 -> 1 SYN
server这次还是正常回复SYN+ACK
然后client发ACK
然后client发了6个字节的data包，用了PSH
然后client发FIN
。。。。
看来是Client的原因。用的是Linux的标准socket
还是winsock还是自己写的TCP控制？ |
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c***a
发帖数: 251 | 9 【 以下文字转载自 Java 讨论区 】
【 原文由 cocoa 所发表 】
怎么会这样呢？错误是这样的
java.sq.SQLException: Communication failure during handshake.
Is there a server:info9.vub.ac.be:3306?
前面的数据读的好好的.读到一半，就上面那样了。而且我的数据库放在info9.vub.ac.be
请教 |
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z**r
发帖数: 17771 | 10 先做DNS，DNS server IP在本地有，然后就是查routing tabel找出gateway，然后ARP
出gateway MAC。DNS是UDP，那么本地发起这个UDP的DNS lookup，等收到www.google.
com的server IP，然后发起TCP的HTTP，先是tcp 3-way handshake，然后就是HTTP的
GET等等关于HTTP的细节 |
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n********x
发帖数: 5 | 11 先做DNS，
DNS server IP在本地有
然后就是查routing tabel找出gatewayDNS
然后ARP出gateway MAC <<--- 这个基本上本地有...
DNS是UDP，那么本地发起这个UDP的DNS lookup <<--- 不光是UDP吧
等收到www.google.com的server IP
然后发起TCP的HTTP，先是tcp 3-way handshake，然后就是HTTP的
GET等等关于HTTP的细节 |
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f*******8
发帖数: 3612 | 12 要说起来，一个公司发展这么大，一定是走的共同富裕的路数，3way handshake.
呵呵，这是正道。 |
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s*****g
发帖数: 1055 | 13 Sure ... first of all, TCP termination does not come for free, it consumes a lot of memory and CPU. At L4, load balancer only sees TCP/IP traffic (as opposed to at L7, it has to look at contents of the packets), this is no information for load balancer to make correct load balance decision to back end servers, only it needs to do is to do destination NAT and stitch the TCP handshake between client and back end server. TCP termination does not buy you anything at L4. |
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m********d
发帖数: 188 | 14 那就是说tcp 3-way handshake实质上是发生在server和client之间的，象
普通的nat一样？ |
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a**********k
发帖数: 1953 | 15 Highend Load balancer (or ADC as called recently) can
do load balancing based on L4-L7 info. It can do
TCP, SSL, XML offloading etc.
a lot of memory and CPU. At L4, load balancer only sees TCP/IP traffic (as
opposed to at L7, it has to look at contents of the packets), this is no
information for load balancer to make correct load balance decision to back
end servers, only it needs to do is to do destination NAT and stitch the TCP
handshake between client and back end server. TCP termination doe... 阅读全帖 |
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a**********k
发帖数: 1953 | 16 TCP is not merely 3-way handshaking, it has much more
tasks to perform, such as congestion control over WAN,
DDoS prevention etc. Some of them can be offloaded to SLB.
card. |
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t*******r
发帖数: 3271 | 17 来自主题: EmergingNetworking版 - 求面试问题 Describe the series of events going on when the 4 Routers connected the
Ethernet power up the same time.
What fields are contained in OSPF’s HELLO Packets ? (10 40 seconds)
Desribe Hello Packets when two routers are in the 2WAY state (neighbor field
) …
Can a router with a higher priority pre-empt a DR or BDR ?
What does Priority 0 mean ?
Describe the various LSA types (1,2,3,4,5) and what they are used for ?
1. Explain the 1st line – what is is (NET)
2. What’s in the second line ? (LSP-ID)
Expl... 阅读全帖 |
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a**********k
发帖数: 1953 | 18 There are several ways to enforce that. One way would be to
start an activation server on a local machine that is not accessible
outside your company. After the program starts, tries to talk to
the activation server first, and exits if it is not able to hand-shake
with the activation server.
If you only want to limit the program within one LAN, set the TTL
of handshake packets to 1.
局域网内电脑里运行，来保证这个软件只在我们公室内部使用。想请问一下，如何实现？
那些是可以用来判断程序是在公司局域内电脑里运行。我想IP address 不行吧，那只
是局域网的IP。Connection-speci... 阅读全帖 |
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a**********k
发帖数: 1953 | 19 That will work. In this case, the DNS server acts as an activation
server with DNS PTR query being the handshake protocol.
the
controller |
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w*f
发帖数: 111 | 20 you misunderstood me.
本人讨厌纸上谈兵的networkers.
we had to fire a few new network engineers who did well in the interviews (
all theory questions). Our reflection was we failed to ask "real life
questions"
You need to know protocols but you need to know "how protocol work" such as
tcp 3way handshake, not "how many bytes" in field xyz. (you can easily
perform google search)
It's good to know "theory" but I hate to see some people who remember a lot
of from CCIE books then believe they're good networker... 阅读全帖 |
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i**p
发帖数: 902 | 21 HTTPS需要TLS的支持. 而在TLS Handshaking Protocols中, TLS client 要回送
certificate(Client)给TLS server. 请问这个certificate(Client)是web browser安
装的吗? |
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s*****g
发帖数: 1055 | 22 Certificate request from Server to Client is optional, it is not practical
nor necessary to implement this message during handshaking in Web
communication (HTTPS). |
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i**p
发帖数: 902 | 23 HTTPS需要TLS的支持. 而在TLS Handshaking Protocols中, TLS client 要回送
certificate(Client)给TLS server. 请问这个certificate(Client)是web browser安
装的吗? |
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s*****g
发帖数: 1055 | 24 Certificate request from Server to Client is optional, it is not practical
nor necessary to implement this message during handshaking in Web
communication (HTTPS). |
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g***u
发帖数: 5413 | 25 可能是吧。至少那种有版权保护HDCP的信号肯定不能直接传，这种需要和显示设备交流
一下（handshake）。 |
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d********e
发帖数: 1468 | 27 HDCP handshake问题偶并不是很熟，有个解决方案是装一个anydvd hd。你可以自己
google一下。 |
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r******u
发帖数: 281 | 28 After you unplug the HDMI cable, the handshake authorization
process is reset.
You can try to find out what 2 blinks means for your TV. That can give you a clue.
I have experienced similar issue. I usually power off everything at the
same time but the computer always takes longer than the TV to shut down.
That will also lead me to your issue. Now, I always switch to a component
input before I turn off the TV. It seems that solves the issue in my case.
I suggest you go to AVSforum to post the i |
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b**********g
发帖数: 460 | 29 airdump capturing 4 way handshake. 用aircrack对密码了。
不过很费时间。 church-wifi 的table挺好用。 |
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c****3
发帖数: 265 | 30 开始的handshaking太慢。win7基本上比vista显示多些，但总有黑屏的时候，等等嘛，
不着急。我的Vista大概有三分钟黑屏时间，总以为他就不行了。DVI receiver detect
好了，开始的logo也过了，没事。
关于bios设置，有时候的速查就跳过去了。 |
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c*********h
发帖数: 125 | 31 有可能是你的电视的问题。有些lcd 电视接hdmi的时候handshake 有问题，你用
composite线试一下电视和pbo 有没有声音。
我的电视是sharp auros LC46,开始也有一样的问题，后来升级了电视的firmware就好
了。 |
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l******e
发帖数: 12192 | 32 还是差
hdmi到我的receiver老是有handshaking的问题 |
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a***e
发帖数: 27968 | 33 确定不是你线的问题
这个handshaking应该不需要driver支持的，是bios级别的东西
hdmi还是很讨厌的
俺的ion/atom,睡着了唤醒，经常hdmi audio就丢了，video好好的，神经病 |
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l***h
发帖数: 9308 | 34 内网ip指默认网关192.168.1.1？
我看了一下网上贴的错误问答，别人在TLS这一步没错，而我这里出现问题，但不知道可
能是哪里导致的
TLS Error: TLS key negotiation failed to occur within 60 seconds (check your
network connectivity)
TLS Error: TLS handshake failed |
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i******t
发帖数: 11048 | 35 update一下，换了台电视，一切正常。
网上搜索了一下，好像这个是vizio的通病，hdmi handshake有问题，电脑能识别，电
视没有信号。
唉。以后不碰这种机器了。 |
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a***e
发帖数: 27968 | 36 it is actually difficult to reach even 35MB/s in theory,
if you add the handshaking/error checking in the protocol.
the overhead is simply rediculous high. you get about 60% bandwidth only.
try use your PC UBS2.0 to write to a USB3.0 HDD,
30MB/s is likely what you will get.
The USB3.0 HDD could take 80MB/s if it is on USB3.0. |
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z*********e
发帖数: 10149 | 37 只能抓些有漏洞的路由器，抓了信号说不定还很差。研究研究挺好，没啥实用价值
你要brutal force wpa的handshake那当我没说, lol |
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z*********e
发帖数: 10149 | 38 最有效的办法是reaver搞wps，belkin和netgear好多低端路由器都有问题。而且这个方
法对硬件没有要求，笔记本就能干
如果你要brutal force wpa/wpa2的handshake，得搞个amd的gpu才有机会去试，现在正
好可以冬天取暖
wep虽然很容易搞定，但是几乎没人用了。 |
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f****d
发帖数: 3217 | 39 google hdmi handshake problem |
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c****t
发帖数: 5452 | 40 主要是handshake和unifomity的问题。
就是经常失去信号，得power cycle。色彩的话比如经常有大块的面积明显的发黄。
Dell u打头的色彩还好些，但是像这种不带U的，虽然也号称出厂校准过得还是经常会
惨不忍睹。卖的贵的不一定好，但这种便宜的肯定没好货。 |
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c****t
发帖数: 5452 | 41 p2715q两个主要问题, 一个是屏幕中间和两边有色差,没法调,一个是信号handshake有
问题,休眠以后无法唤醒或者有时候直接启动无法点亮. 你先查查这两个问题解决没有 |
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p*******m
发帖数: 20761 | 42 对于路由器来说，这绝对是一个悲催的消息，因为有黑客已经发现了能够轻松干掉WPA
或WPA2加密Wi-Fi网络的方法。
据外媒TheNextWeb报道称，攻击者在联网设备和无线接入点之间读取到无线通信协议，
甚至还能将其修改，把恶意软件嵌入到网站中，macOS、Windows、iOS、Android和
Linux都不能躲避这个漏洞。
WPA2加密协议被攻破！路由器等一大波设备遭殃
其实出现这个问题，也没有让我们太意外，因为WPA2加密协议已经服役差不多13年，其
被破解对于普通用户来说是难受的，因为攻击者不需要破解Wi-Fi密码，就可以轻松来
窃取用户的信用卡卡号、密码、聊天信息、照片、电子邮件以及在线通讯工具内容。
研究人员还强调，Android 6.0及以上版本系统都存在这个漏洞，而这种毁灭性的无线
网络攻击可以瞬间让41%的安卓设备挂掉，其通过读取无线网络流量的方式实现（利用
了WPA2协议4-way handshake的漏洞），并不针对接入点。
你更换WiFi密码是不能解决这个问题的，只能等待相应路由器客户端针对这个漏洞的更
新，当然还有其他设备的补丁更新。 |
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p*******m
发帖数: 20761 | 43 Monday morning was not a great time to be an IT admin, with the public
release of a bug that effectively broke WPA2 wireless security.
WPA2 security flaw puts almost every Wi-Fi device at risk of hijack,
eavesdropping
WPA2 security flaw puts almost every Wi-Fi device at risk of hijack,
eavesdropping
Security experts have said the bug is a total breakdown of the WPA2 security
protocol.
Read More
As reported previously by ZDNet, the bug, dubbed "KRACK" -- which stands for
Key Reinstallation Attack... 阅读全帖 |
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l**********l
发帖数: 209 | 44 这个漏洞具体是在实现上，是wpa2协议里没有提到的
“Essentially, to guarantee security, a key should only be installed and
used once. Unfortunately, we found this is not guaranteed by the WPA2
protocol. By manipulating cryptographic handshakes, we can abuse this
weakness in practice.”
“adversaries can use this attack to decrypt packets sent by clients,
allowing them to intercept sensitive information such as passwords or
cookies. Decryption of packets is possible because a key reinstallation
attack causes the transmit n... 阅读全帖 |
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c***a
发帖数: 251 | 45 怎么会这样呢？错误是这样的
java.sq.SQLException: Communication failure during handshake.
Is there a server:info9.vub.ac.be:3306?
前面的数据读的好好的.读到一半，就上面那样了。而且我的数据库放在info9.vub.ac.be
请教 |
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A**o
发帖数: 1550 | 46 write your own handshaker and eat whatever the cert given to you? |
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c*c
发帖数: 447 | 47 >> java.io.EOFException: SSL peer shut down incorrectly
this sounds like SSL handshake problem。you may need to import HTTPS cert to
the keystore on client side..
You can easily generate webservice client from WSDL with netbeans..
it seems WS-Security is involved, you'll need some kind of framework to put
WS-Sececurity token in to WS header. You can do it in your code, but it'll
be nasty... |
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s***g
发帖数: 495 | 48 When fcitx starts, it registers with system software providing necessary
information such as trigger keys, which applications it can help, and
other things. Other applications are also required to register with system
software granting the willness to accept the help from fcitx. Only after
this two-party handshaking succeeds, the interprocess communication
between fcitx and application can be triggered and wired through system
software. |
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G**Y
发帖数: 33224 | 49 host: vista
client: windows 7
最后是TLS handshaking error。这个openvpn真是pain in the ass呀。server上折腾也
就罢了，怎么client也要折腾呀？server上，我可以把rouer搞个port forwarding。
不知道啥设置不对，完全是按照FAQ做的。里面涉及的术语太多，没完全看懂。
client是个到处走的笔记本，怎么能disable firewall呢？
问题：如果买个100来块的VPN router，我是不是就不用设什么了？VPN router和学校里
用的Cisco VPN是一样的感觉吗？
目的就是从办公室能share家里的一个folder。办公室的机器，必须有防火墙。 |
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r***e
发帖数: 2000 | 50 When I send email with 'mail', I use verbose to make sure I see it actually
goes out. Recently, it no longer display the handshaking messages on screen
, but rather send you by a separate email, which is annoying. Setting '
verbose' in the .mailrc file or using '-v' on command line have same effect:
$ mail -v john
Subject: tst
test
.
EOT
Mail Delivery Status Report will be mailed to
Anyone knows how to reverse back to screen display? Thanks. |
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