Mercurial > hg > nginx-site
view xml/en/docs/welcome_nginx_facebook.xml @ 498:65843513cff5
Documented that "fastcgi_keep_conn" appeared in 1.1.4.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Mon, 23 Apr 2012 08:01:25 +0000 |
parents | 5bb373c6e502 |
children | 1f14f98a487e |
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<!DOCTYPE article SYSTEM "../../../dtd/article.dtd"> <article name="I am trying to open Facebook and instead I am getting “Welcome to nginx!” page" link="/en/docs/welcome_nginx_facebook.html" lang="en"> <section> <para> <initial>Q:</initial> I am trying to open Facebook, Yahoo!, Google, or some other well-known web site and instead I am getting a blank web page with a message referring to nginx: “Welcome to nginx!” or “404 Not Found / nginx”. </para> <para> I suspect something is wrong and there is probably a malicious attempt here to direct me to a rogue web page (to break into my computer, do phishing etc.). Why is that and what has nginx to do with my attempts to connect to Facebook (Yahoo!, Google, etc.) ? </para> <para> </para> <para> <initial>A:</initial> nginx is among the 3 most popular web servers in the world, it's being used by over 10% of the Internet web sites, including 25% of the top-1000 ones. It is a free open source server software, focused on high performance and high concurrency, and it's absolutely legitimate and has nothing to do with any kind of threatening or malicious activity per se. A web page saying “Welcome to nginx!” is one of the diagnostics responses that can be produced by any of the web sites running nginx. </para> <para> However, you are right in your assumption that something must be wrong with your browser, operating system or even router setup when you are trying to access a well known web site and instead of a familiar page you get “Welcome to nginx!”. This should not happen if your computer and network are clean and safe. </para> <para> We recommend you to check and verify your entire system setup (possibly with the help of your ISP or another support personnel), and it would also be a good idea to install and run an anti-virus software on your computer. It may happen that some malign entity is trying to divert the traffic from your computer to a wrong server and hijack the data, which may subsequently lead to a significant harm. </para> <para> What you should check is at least the following: </para> <para> (Disclaimer: at nginx we are not responsible for any negative impact or effects that the actions below might cause. Use the following recommendations at your own risk, especially if you aren't an experienced user of your operating system and/or Internet applications. In no event shall nginx be liable for any direct, indirect, incidental, special, exemplary, or consequential damages, including, but not limited to loss of use, data, or profits; or business interruption). </para> <para> <list type="bullet" compact="no"> <listitem> Check your TCP/IP settings and see if the DNS servers configuration matches the one recommended by your Internet service provider and/or your IT support personnel. </listitem> <listitem> Check if the "hosts" file doesn't contain entries other than "127.0.0.1 localhost", and if so — if these entries are for the web site you're trying to reach and instead you're seeing a wrong web site. The "hosts" files is located in C:\WINDOWS\system32\drivers\etc directory. Typically there should be just one entry in it, for "127.0.0.1 localhost", that's it. The "hosts" file can be viewed with your standard Notepad application. </listitem> <listitem> Try to (temporarily) use Google Public DNS and see if it fixes the problem. From Google's description of its Public DNS - "Google Public DNS is a free, global Domain Name System (DNS) resolution service, that you can use as an alternative to your current DNS provider. To try it out: Configure your network settings to use the IP addresses 8.8.8.8 and 8.8.4.4 as your DNS servers. [..] By using Google Public DNS you can: Speed up your browsing experience. Improve your security. Get the results you expect with absolutely no redirection." </listitem> <listitem> If you change DNS settings, clear your DNS resolver cache. On Microsoft Windows it is done with the following command: Start > Run > ipconfig /flushdns </listitem> <listitem> Clear browser data (cache, cookies etc.), e.g. in Chrome find and click "Clear Browsing Data" (Settings > Under the Hood). Caution: you may be deleting saved passwords information here, so do it carefully and check what exact actions you are performing. </listitem> <listitem> Try to check the plugins/extensions you've installed for use with your browser. It might make sense to re-install your favorite browser and/or try a different one if possible. </listitem> <listitem> If cleaning "hosts" file (when applicable), changing DNS servers to Google Public DNS, flushing DNS resolver cache, or fixing your browser configuration have helped, it might be that there's a malware somewhere on your PC or around. It makes perfect sense then to run a number of checks using your preferred anti-virus/anti-malware tools. </listitem> </list> </para> <para> Links describing Google Public DNS: </para> <para> <link url="http://code.google.com/speed/public-dns/"/> </para> <para> <link url="http://code.google.com/speed/public-dns/docs/using.html"/> </para> <para> Microsoft's Malicious Software Removal Tool: </para> <para> <link url="http://www.microsoft.com/security/pc-security/malware-removal.aspx"/> </para> </section> </article>