Torsten Feld 加入.
Torsten Feld 说:
Hi, how can I help you?
您 说:
Hello.Webprotection makes internet bad for downloading exe,rar ,etc. How could we deal with it.
Torsten Feld 说:
Which version and product do you have installed?
您 说:
AVIRA free antivirous2012
Torsten Feld 说:
Does the download get faster again if Web Protection is disabled?
您 说:
Yes,I am sure.
Torsten Feld 说:
How fast is your internet connection?
您 说:
1M
115KB/S
Torsten Feld 说:
Avira Web Protection module is working like a proxy server. This means, that the file is downloaded to the web protection module first and not written to harddisk / sent to browser until it's checked. This may lead to the assumption, that the download speed is slower than usual
您 说:
If I would not use Web Protection,the computer gets infected with trojan than using it.Thank you verymuch. My English is not very well.
Torsten Feld 说:
Please check this article, where our Director Research explains, how our web protection works
Torsten Feld 推荐网页:
http://forum.avira.com/wbb/index.php?page=Thread&postID=340313#post340313
您 说:
Thankyou for giving me a hand.
Torsten Feld 说:
you're welcome :)
这是在论坛上找的,有兴趣的看一下官方的论坛
Nikolaos: speedtest.net is not a reliable way to test your internet performance.
To clarify how webguard works (approximately and as relevant to bring some light into this discussion):
Basically it is a proxy that sits between your application and system drivers.
For larger downloads:
1. Your application requests a download
2. Webguard forwards the request to the server
3. The server starts delivering data to your PC
4. Webguard 'catches' the transferred data and 'trickles' the download at a lower speed to your application to avoid timeouts by the application
5. Webguard has received the complete file from the server and starts scanning it, meanwhile it continues to 'trickle' data to your application to avoid timeouts
6. Webguard completes scanning of the download
7. Webguard sends the remaining data of the already downloaded and scanned file to your application at the full speed your Operating System allows (almost instantly for hundreds of MB )
For small downloads that would not cause timeout issues with applications, the data is not being 'trickled' to the browser, but gets scanned and sent to your application afterwards.
I hope this explains to you why both your applications and speedtest websites report values that simply are not reflecting what is actually happening. These can either be ridiculously high (maximum transfer speed) or at around 50% (trickle speed as perceived by the application) of the values you are used to.
It does not mean your internet connection is crippled or anything alike, the only amount of time that your download gets slowed down is the time AntiVir needs to scan the file while it is already downloaded, which is the same amount of time an on-demand scan would take. This can take a bit of course (for large archives), which is why the 'trickling' for timeout prevention is taking place to avoid your application simply to think the download got aborted.
Also note that scanning archives is essential for proper protection, as many webservers deliver their normal html content in compressed form which then gets uncompressed by your browsers internally.
古拉斯：speedtest.net是不可靠的方法来测试您的Internet性能。
WebGuard会澄清如何工作的（约和有关带来一些光线进入这个讨论）：
基本上它是一个坐在你的应用程序和系统驱动程序之间的代{过}{滤}理。
对于较大的下载：
1。你的应用程序请求下载
2。 WebGuard会转发到服务器的请求
3。服务器开始传送数据到您的PC
4。 WebGuard会“捕捉”的数据传输和'滴滴'下载到您的应用程序在一个较低的速度，以避免应用程序超时
5。 WebGuard会从服务器收到完整的文件，并开始扫描，同时继续以“滴”数据到您的应用程序，以避免超时
6。 WebGuard会在下载完成扫描
7。 WebGuard会发送到您的应用程序已经下载和扫描的文件中剩余的数据，在您的操作系统允许全速（几乎即刻数百MB）
对于小型下载，不会导致应用程序的超时问题，数据不被“惠及”的浏览器，但被扫描后发送到您的应用程序。
我希望这给你解释为什么你的应用程序和speedtest网站报告根本没有反映实际发生的事情的价值。这些可以是高得离谱（最高传输速度），或者你是用来值在50％左右（滴入应用感知的速度）。
这并不意味着您的Internet连接被削弱或任何一样，只有时间，会减慢你的下载是中病毒的时候需要扫描的文件时，它已被下载，这是在相同的时间内按需扫描会需要。这可能需要一个过程中位（大档案），这是为什么“滴”，超时预防正在发生，以避免您的应用程序简单地认为下载了中止。
还注意到，扫描档案适当的保护是必不可少的，因为许多Web服务器在您的浏览器然后解压缩内部的压缩形式提供其正常的HTML内容。
这是我用google翻译的.本人英语水平有限,请见谅. |
发表于 2012-7-11 22:47:04
