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annotate xml/en/docs/stream/ngx_stream_ssl_module.xml @ 1450:f5b5eefc43cb

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Updated commercial docs for the upcoming release.
author Ruslan Ermilov <ru@nginx.com>
date Thu, 09 Apr 2015 19:18:54 +0300
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children acba294382d6
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1450
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1 <?xml version="1.0"?>
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2
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3 <!--
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4 Copyright (C) Nginx, Inc.
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5 -->
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6
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7 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
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8
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9 <module name="Module ngx_stream_ssl_module"
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10 link="/en/docs/stream/ngx_stream_ssl_module.html"
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11 lang="en"
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12 rev="1">
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13
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14 <section id="summary">
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15
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16 <para>
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17 The <literal>ngx_stream_ssl_module</literal> module (1.7.10)
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18 provides the necessary support for a stream proxy server to work with
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19 the SSL/TLS protocol.
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20 </para>
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21
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22 <para>
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23 <note>
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24 This module is available as part of our
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25 <commercial_version>commercial subscription</commercial_version>.
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26 </note>
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27 </para>
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28
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29 </section>
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30
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31
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32 <section id="directives" name="Directives">
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33
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34 <directive name="ssl_certificate">
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35 <syntax><value>file</value></syntax>
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36 <default/>
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37 <context>stream</context>
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38 <context>server</context>
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39
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40 <para>
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41 Specifies a file with the certificate in the PEM format for the given
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42 server.
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43 If intermediate certificates should be specified in addition to a primary
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44 certificate, they should be specified in the same file in the following
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45 order: the primary certificate comes first, then the intermediate certificates.
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46 A secret key in the PEM format may be placed in the same file.
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47 </para>
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48
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49 </directive>
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50
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51
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52 <directive name="ssl_certificate_key">
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53 <syntax><value>file</value></syntax>
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54 <default/>
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55 <context>stream</context>
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56 <context>server</context>
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57
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58 <para>
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59 Specifies a file with the secret key in the PEM format for the given
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60 server.
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61 </para>
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62
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63 </directive>
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64
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65
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66 <directive name="ssl_ciphers">
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67 <syntax><value>ciphers</value></syntax>
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68 <default>HIGH:!aNULL:!MD5</default>
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69 <context>stream</context>
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70 <context>server</context>
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71
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72 <para>
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73 Specifies the enabled ciphers.
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74 The ciphers are specified in the format understood by the
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75 OpenSSL library, for example:
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76 <example>
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77 ssl_ciphers ALL:!aNULL:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
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78 </example>
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79 </para>
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80
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81 <para>
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82 The full list can be viewed using the
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83 “<command>openssl ciphers</command>” command.
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84 </para>
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85
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86 </directive>
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87
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88
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89 <directive name="ssl_dhparam">
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90 <syntax><value>file</value></syntax>
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91 <default/>
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92 <context>stream</context>
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93 <context>server</context>
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94
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95 <para>
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96 Specifies a <value>file</value> with DH parameters for EDH ciphers.
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97 </para>
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98
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99 </directive>
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100
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101
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102 <directive name="ssl_ecdh_curve">
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103 <syntax><value>curve</value></syntax>
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104 <default>prime256v1</default>
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105 <context>stream</context>
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106 <context>server</context>
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107
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108 <para>
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109 Specifies a <value>curve</value> for ECDHE ciphers.
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110 </para>
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111
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112 </directive>
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113
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114
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115 <directive name="ssl_handshake_timeout">
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116 <syntax><value>time</value></syntax>
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117 <default>60s</default>
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118 <context>stream</context>
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119 <context>server</context>
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120
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121 <para>
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122 Specifies a timeout for the SSL handshake to complete.
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123 </para>
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124
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125 </directive>
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126
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127
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128 <directive name="ssl_password_file">
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129 <syntax><value>file</value></syntax>
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130 <default/>
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131 <context>stream</context>
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132 <context>server</context>
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133
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134 <para>
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135 Specifies a <value>file</value> with passphrases for
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136 <link id="ssl_certificate_key">secret keys</link>
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137 where each passphrase is specified on a separate line.
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138 Passphrases are tried in turn when loading the key.
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139 </para>
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140
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141 <para>
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142 Example:
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143 <example>
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144 stream {
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145 ssl_password_file /etc/keys/global.pass;
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146 ...
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147
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148 server {
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149 listen 127.0.0.1:12345;
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150 ssl_certificate_key /etc/keys/first.key;
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151 }
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152
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153 server {
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154 listen 127.0.0.1:12346;
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155
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156 # named pipe can also be used instead of a file
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157 ssl_password_file /etc/keys/fifo;
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158 ssl_certificate_key /etc/keys/second.key;
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159 }
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160 }
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161 </example>
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162 </para>
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163
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164 </directive>
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165
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166
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167 <directive name="ssl_prefer_server_ciphers">
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168 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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169 <default>off</default>
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170 <context>stream</context>
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171 <context>server</context>
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172
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173 <para>
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174 Specifies that server ciphers should be preferred over client ciphers
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175 when the SSLv3 and TLS protocols are used.
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176 </para>
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177
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178 </directive>
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179
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180
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181 <directive name="ssl_protocols">
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182 <syntax>
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183 [<literal>SSLv2</literal>]
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184 [<literal>SSLv3</literal>]
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185 [<literal>TLSv1</literal>]
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186 [<literal>TLSv1.1</literal>]
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187 [<literal>TLSv1.2</literal>]</syntax>
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188 <default>SSLv3 TLSv1 TLSv1.1 TLSv1.2</default>
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189 <context>stream</context>
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190 <context>server</context>
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191
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192 <para>
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193 Enables the specified protocols.
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194 The <literal>TLSv1.1</literal> and <literal>TLSv1.2</literal> parameters work
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195 only when the OpenSSL library of version 1.0.1 or higher is used.
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196 </para>
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197
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198 </directive>
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199
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200
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201 <directive name="ssl_session_cache">
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202 <syntax>
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203 <literal>off</literal> |
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204 <literal>none</literal> |
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205 [<literal>builtin</literal>[:<value>size</value>]]
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206 [<literal>shared</literal>:<value>name</value>:<value>size</value>]</syntax>
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207 <default>none</default>
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208 <context>stream</context>
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209 <context>server</context>
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210
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211 <para>
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212 Sets the types and sizes of caches that store session parameters.
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213 A cache can be of any of the following types:
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214 <list type="tag">
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215
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216 <tag-name><literal>off</literal></tag-name>
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217 <tag-desc>
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218 the use of a session cache is strictly prohibited:
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219 nginx explicitly tells a client that sessions may not be reused.
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220 </tag-desc>
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221
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222 <tag-name><literal>none</literal></tag-name>
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223 <tag-desc>
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224 the use of a session cache is gently disallowed:
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225 nginx tells a client that sessions may be reused, but does not
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226 actually store session parameters in the cache.
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227 </tag-desc>
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228
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229 <tag-name><literal>builtin</literal></tag-name>
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230 <tag-desc>
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231 a cache built in OpenSSL; used by one worker process only.
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232 The cache size is specified in sessions.
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233 If size is not given, it is equal to 20480 sessions.
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234 Use of the built-in cache can cause memory fragmentation.
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235 </tag-desc>
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236
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237 <tag-name><literal>shared</literal></tag-name>
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238 <tag-desc>
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239 a cache shared between all worker processes.
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240 The cache size is specified in bytes; one megabyte can store
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241 about 4000 sessions.
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242 Each shared cache should have an arbitrary name.
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243 A cache with the same name can be used in several
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244 servers.
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245 </tag-desc>
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246
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247 </list>
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248 </para>
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249
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250 <para>
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251 Both cache types can be used simultaneously, for example:
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252 <example>
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253 ssl_session_cache builtin:1000 shared:SSL:10m;
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254 </example>
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255 but using only shared cache without the built-in cache should
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256 be more efficient.
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257 </para>
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258
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259 </directive>
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260
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261
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262 <directive name="ssl_session_ticket_key">
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263 <syntax><value>file</value></syntax>
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264 <default/>
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265 <context>stream</context>
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266 <context>server</context>
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267
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268 <para>
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269 Sets a <value>file</value> with the secret key used to encrypt
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270 and decrypt TLS session tickets.
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271 The directive is necessary if the same key has to be shared between
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272 multiple servers.
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273 By default, a randomly generated key is used.
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274 </para>
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275
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276 <para>
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277 If several keys are specified, only the first key is
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278 used to encrypt TLS session tickets.
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279 This allows configuring key rotation, for example:
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280 <example>
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281 ssl_session_ticket_key current.key;
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282 ssl_session_ticket_key previous.key;
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283 </example>
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284 </para>
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285
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286 <para>
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287 The <value>file</value> must contain 48 bytes of random data and can
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288 be created using the following command:
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289 <example>
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290 openssl rand 48 > ticket.key
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291 </example>
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292 </para>
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293
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294 </directive>
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295
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296
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297 <directive name="ssl_session_tickets">
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298 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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299 <default>on</default>
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300 <context>stream</context>
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301 <context>server</context>
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302
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303 <para>
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304 Enables or disables session resumption through
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305 <link url="http://tools.ietf.org/html/rfc5077">TLS session tickets</link>.
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306 </para>
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307
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308 </directive>
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309
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310
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311 <directive name="ssl_session_timeout">
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312 <syntax><value>time</value></syntax>
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313 <default>5m</default>
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314 <context>stream</context>
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315 <context>server</context>
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316
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317 <para>
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318 Specifies a time during which a client may reuse the
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319 session parameters stored in a cache.
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320 </para>
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321
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322 </directive>
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323
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324 </section>
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325
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326 </module>