Mercurial > hg > nginx-site
annotate xml/en/docs/welcome_nginx_facebook.xml @ 489:2abd1998a0cc
- Added a couple of things about flushing DNS resolver cache
author | Andrey Alexeev <andrew@nginx.com> |
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date | Thu, 19 Apr 2012 09:54:55 +0000 |
parents | cfc69ee2f0a0 |
children | 5bb373c6e502 |
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50 | 1 <!DOCTYPE article SYSTEM "../../../dtd/article.dtd"> |
13 | 2 |
123
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3 <article name="I am trying to open Facebook and |
327 | 4 instead I am getting “Welcome to nginx!” page" |
13 | 5 link="/en/docs/welcome_nginx_facebook.html" |
6 lang="en"> | |
7 | |
8 | |
9 <section> | |
10 | |
17
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11 <para> |
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12 <initial>Q:</initial> |
16 | 13 I am trying to open Facebook, Yahoo!, Google, or some |
327 | 14 other well-known web site and instead I am getting a blank web page |
15 with a message referring to nginx: “Welcome to nginx!” or | |
16 “404 Not Found / nginx”. | |
13 | 17 </para> |
18 | |
19 <para> | |
20 I suspect something is wrong and there is probably a malicious attempt here | |
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21 to direct me to a rogue web page (to break into my computer, do phishing etc.). |
327 | 22 Why is that and what has nginx to do with my attempts to connect |
13 | 23 to Facebook (Yahoo!, Google, etc.) ? |
24 </para> | |
25 | |
26 <para> | |
27 | |
28 </para> | |
29 | |
17
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30 <para> |
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31 <initial>A:</initial> |
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32 nginx is among the 3 most popular web servers in the world, it's being |
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33 used by over 10% of the Internet web sites, including 25% of the top-1000 ones. |
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34 It is a free open source server software, focused on high performance and |
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35 high concurrency, and it's absolutely legitimate and |
13 | 36 has nothing to do with any kind of threatening or malicious activity per se. |
327 | 37 A web page saying “Welcome to nginx!” is one of the diagnostics |
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38 responses that can be produced by any of the web sites running nginx. |
13 | 39 </para> |
40 | |
41 <para> | |
42 However, you are right in your assumption that something must be wrong | |
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43 with your browser, operating system or even router setup when you are |
327 | 44 trying to access a well known web site and instead of a familiar page you get |
45 “Welcome to nginx!”. This should not happen if your computer | |
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46 and network are clean and safe. |
327 | 47 </para> |
48 | |
49 <para> | |
50 We recommend you to check and verify your entire system setup | |
51 (possibly with the help of your ISP or another support personnel), | |
52 and it would also be a good idea to install and run an anti-virus software | |
13 | 53 on your computer. It may happen that some malign entity is trying |
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54 to divert the traffic from your computer to a wrong server and |
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55 hijack the data, which may subsequently lead to a significant harm. |
13 | 56 </para> |
57 | |
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58 <para> |
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59 What you should check is at least the following: |
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60 </para> |
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61 |
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62 <para> |
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63 (Disclaimer: at nginx we are not responsible for any negative |
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64 impact or effects that the actions below might cause. Use the |
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65 following recommendations at your own risk, especially if |
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66 you aren't an experienced user of your operating system and/or |
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67 Internet applications. In no event shall nginx be liable for |
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68 any direct, indirect, incidental, special, exemplary, or |
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69 consequential damages, including, but not limited to loss of |
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70 use, data, or profits; or business interruption). |
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71 </para> |
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72 |
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73 <para> |
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74 <list type="bullet" compact="no"> |
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75 <listitem> |
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76 Check your TCP/IP settings and see if the DNS servers |
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77 configuration matches the one recommended by your Internet |
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78 service provider and/or your IT support personnel. |
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79 </listitem> |
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80 |
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81 <listitem> |
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82 Check if the "hosts" file doesn't contain entries other |
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83 than "127.0.0.1 localhost", and if so — if these entries are for |
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84 the web site you're trying to reach and instead you're seeing a |
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85 wrong web site. The "hosts" files is located in |
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86 C:\WINDOWS\system32\drivers\etc directory. Typically there should |
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87 be just one entry in it, for "127.0.0.1 localhost", that's it. The |
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88 "hosts" file can be viewed with your standard Notepad application. |
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89 </listitem> |
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90 |
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91 <listitem> |
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92 Try to (temporarily) use Google Public DNS and see if |
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93 it fixes the problem. From Google's description of its Public DNS - |
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94 "Google Public DNS is a free, global Domain Name System (DNS) |
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95 resolution service, |
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96 that you can use as an alternative to your current DNS provider. |
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97 To try it out: Configure your network settings to use the IP |
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98 addresses 8.8.8.8 and 8.8.4.4 as your DNS servers. [..] By |
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99 using Google Public DNS you can: Speed up your browsing |
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100 experience. Improve your security. Get the results you expect |
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101 with absolutely no redirection." |
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102 </listitem> |
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103 |
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104 <listitem> |
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105 If you change DNS settings, clear your DNS resolver cache. On |
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106 Microsoft Windows it is done with the following command: |
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107 Start > Run > ipconfig /flushdns |
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108 </listitem> |
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109 |
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110 <listitem> |
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111 Clear browser data (cache, cookies etc.), e.g. in Chrome |
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112 find and click "Clear Browsing Data" (Settings > Under the Hood). |
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113 Caution: you may be deleting saved passwords information here, |
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114 so do it carefully and check what exact actions you are performing. |
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115 </listitem> |
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116 |
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117 <listitem> |
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118 Try to check the plugins/extensions you've installed |
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119 for use with your browser. It might make sense to re-install |
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120 your favorite browser and/or try a different one if possible. |
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121 </listitem> |
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122 |
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123 <listitem> |
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124 If cleaning "hosts" file (when applicable), changing |
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125 DNS servers to Google Public DNS, flushing DNS resolver cache, |
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126 or fixing your browser configuration have helped, it might be |
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127 that there's a malware somewhere on your PC or around. |
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128 It makes perfect sense then to run a number of checks using |
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129 your preferred anti-virus/anti-malware tools. |
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130 </listitem> |
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131 </list> |
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132 </para> |
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133 |
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134 <para> |
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135 Links describing Google Public DNS: |
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136 </para> |
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137 |
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138 <para> |
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139 <link url="http://code.google.com/speed/public-dns/"> |
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140 http://code.google.com/speed/public-dns/ |
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141 </link> |
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142 </para> |
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143 |
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144 <para> |
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145 <link url="http://code.google.com/speed/public-dns/docs/using.html"> |
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146 http://code.google.com/speed/public-dns/docs/using.html |
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147 </link> |
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148 </para> |
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149 |
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150 <para> |
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151 Microsoft's Malicious Software Removal Tool: |
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152 </para> |
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153 |
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154 <para> |
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155 <link url="http://www.microsoft.com/security/pc-security/malware-removal.aspx"> |
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156 http://www.microsoft.com/security/pc-security/malware-removal.aspx |
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157 </link> |
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158 </para> |
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159 |
13 | 160 </section> |
161 | |
162 </article> |