| 1 |
2 |
mihal |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
|
| 2 |
|
|
|
| 3 |
|
|
<html>
|
| 4 |
|
|
|
| 5 |
|
|
<head>
|
| 6 |
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
|
| 7 |
|
|
<link rel="stylesheet" type="text/css" href="help.css"/>
|
| 8 |
|
|
<meta name="section" content="Preferences"/>
|
| 9 |
|
|
<link rel="contents" type="text/css" href="toc.html"/>
|
| 10 |
|
|
<link rel="home" type="text/css" href="index.html"/>
|
| 11 |
|
|
<link rel="glossary" href="glossary.html"/>
|
| 12 |
|
|
<link rel="first" href="welcome.html"/>
|
| 13 |
|
|
<link rel="previous" href="privacy.html"/>
|
| 14 |
|
|
<link rel="next" href="wand.html"/>
|
| 15 |
|
|
<link rel="last" href="dialogs.html"/>
|
| 16 |
|
|
<title>Preferences, Security</title>
|
| 17 |
|
|
</head>
|
| 18 |
|
|
<body>
|
| 19 |
|
|
|
| 20 |
|
|
<h1 id="security">Security</h1>
|
| 21 |
|
|
|
| 22 |
|
|
<p>
|
| 23 |
|
|
You can manage your security certificates and configure security protocols.
|
| 24 |
|
|
Opera can also warn you about potentially insecure situations.
|
| 25 |
|
|
</p>
|
| 26 |
|
|
|
| 27 |
|
|
<p>
|
| 28 |
|
|
<span class="note">Tip:</span>
|
| 29 |
|
|
Read Opera's tutorial for an excellent introduction to <a target="_blank" href="http://www.opera.com/support/tutorials/security/"> protecting your personal information and security</a> on the Internet.
|
| 30 |
|
|
</p>
|
| 31 |
|
|
|
| 32 |
|
|
<h2 id="security-password">Security password</h2>
|
| 33 |
|
|
|
| 34 |
|
|
<p>
|
| 35 |
|
|
A security password prevents other people from using your certificates, as long as you select a good password and keep it secret.
|
| 36 |
|
|
Click <input type="button" class="button" value="Set password"/> to enable a security password.
|
| 37 |
|
|
</p>
|
| 38 |
|
|
|
| 39 |
|
|
<p>
|
| 40 |
|
|
If other people have access to your computer, it may be a good idea to tell Opera to ask for a password every time needed, that is every time you use certificates.
|
| 41 |
|
|
</p>
|
| 42 |
|
|
|
| 43 |
|
|
<p>
|
| 44 |
|
|
You can also use the security password to protect your e-mail, news, and <a href="wand.html">Wand</a> passwords with strong encryption.
|
| 45 |
|
|
</p>
|
| 46 |
|
|
|
| 47 |
|
|
<p>
|
| 48 |
|
|
<span class="note">Technical note:</span>
|
| 49 |
|
|
If you set the security password to protect Wand data and e-mail passwords, Opera will use 168-bit triple DES (data encryption standard) encryption. Keys are derived from the security password.
|
| 50 |
|
|
</p>
|
| 51 |
|
|
|
| 52 |
|
|
<h2 id="security-protocols">Security protocols</h2>
|
| 53 |
|
|
|
| 54 |
|
|
<p>
|
| 55 |
|
|
Security protocols are used to communicate securely with sites where sensitive data, such as credit card information, is involved.
|
| 56 |
|
|
</p>
|
| 57 |
|
|
|
| 58 |
|
|
<h3>Enabling and disabling protocols</h3>
|
| 59 |
|
|
|
| 60 |
|
|
<p>
|
| 61 |
|
|
To enable a security protocol, check the respective checkbox.
|
| 62 |
|
|
Supported protocols include:
|
| 63 |
|
|
</p>
|
| 64 |
|
|
|
| 65 |
|
|
<ol>
|
| 66 |
|
|
<li>Secure Socket Layer (SSL) 2.0</li>
|
| 67 |
|
|
<li>Secure Socket Layer (SSL) 3.0</li>
|
| 68 |
|
|
<li>Transport Layer Security (TLS) 1.0 - most secure</li>
|
| 69 |
|
|
</ol>
|
| 70 |
|
|
|
| 71 |
|
|
<p>
|
| 72 |
|
|
Disable (uncheck) SSL 2 and SSL 3 if you wish to only use the most secure protocol (TLS) to establish secure connections.
|
| 73 |
|
|
If you experience problems on secure sites, try turning SSL back on.
|
| 74 |
|
|
</p>
|
| 75 |
|
|
|
| 76 |
|
|
<h3>Configure protocols</h3>
|
| 77 |
|
|
|
| 78 |
|
|
<p>
|
| 79 |
|
|
You can click for example <input type="button" class="button" value="Configure SSL 2"/> and tell Opera not to accept certain ciphers.
|
| 80 |
|
|
To prevent connections to less secure Web services, disable ciphers below 128 bits.
|
| 81 |
|
|
</p>
|
| 82 |
|
|
|
| 83 |
|
|
<p>
|
| 84 |
|
|
<span class="note">Tip:</span>
|
| 85 |
|
|
When you visit secure sites, the padlock icon on the Address bar locks.
|
| 86 |
|
|
Move your mouse pointer over the security icon for detailed information about the current level of security.
|
| 87 |
|
|
</p>
|
| 88 |
|
|
|
| 89 |
|
|
<h2 id="security-certificates">Certificates</h2>
|
| 90 |
|
|
|
| 91 |
|
|
<p>
|
| 92 |
|
|
Generally, certificates are used to verify identities.
|
| 93 |
|
|
</p>
|
| 94 |
|
|
|
| 95 |
|
|
<h3>Authorities</h3>
|
| 96 |
|
|
|
| 97 |
|
|
<p>
|
| 98 |
|
|
Certificate authorities are used to identify secure Web sites.
|
| 99 |
|
|
Most certificate authorities you need are installed with Opera.
|
| 100 |
|
|
</p>
|
| 101 |
|
|
|
| 102 |
|
|
<p>
|
| 103 |
|
|
<span class="note">Example:</span>
|
| 104 |
|
|
The secure version of the <a target="_blank" href="https://www.uio.no/">University of Oslo</a> Web site is authorized by the Thawte organization.
|
| 105 |
|
|
</p>
|
| 106 |
|
|
|
| 107 |
|
|
<table class="nice">
|
| 108 |
|
|
<tr>
|
| 109 |
|
|
<th>Option</th>
|
| 110 |
|
|
<th>Explanation</th>
|
| 111 |
|
|
</tr>
|
| 112 |
|
|
<tr>
|
| 113 |
|
|
<td><input type="button" class="button" value="Import"/></td>
|
| 114 |
|
|
<td>Import certificates you have exported from other browsers or downloaded</td>
|
| 115 |
|
|
</tr>
|
| 116 |
|
|
<tr>
|
| 117 |
|
|
<td><input type="button" class="button" value="Export"/></td>
|
| 118 |
|
|
<td>Export certificates you wish to use in other browsers</td>
|
| 119 |
|
|
</tr>
|
| 120 |
|
|
<tr>
|
| 121 |
|
|
<td><input type="button" class="button" value="Delete"/></td>
|
| 122 |
|
|
<td>Delete certificates you no longer trust or wish to use</td>
|
| 123 |
|
|
</tr>
|
| 124 |
|
|
<tr>
|
| 125 |
|
|
<td>
|
| 126 |
|
|
<input type="checkbox" checked="checked"/>
|
| 127 |
|
|
Allow connections to sites certified by this authority
|
| 128 |
|
|
</td>
|
| 129 |
|
|
<td>Disable (uncheck) to block connections to all sites certified by authority</td>
|
| 130 |
|
|
</tr>
|
| 131 |
|
|
<tr>
|
| 132 |
|
|
<td>
|
| 133 |
|
|
<input type="checkbox"/>
|
| 134 |
|
|
Warn before sending data to sites certified by this authority
|
| 135 |
|
|
</td>
|
| 136 |
|
|
<td>Enable (check) if you want Opera to warn you before using authority</td>
|
| 137 |
|
|
</tr>
|
| 138 |
|
|
</table>
|
| 139 |
|
|
|
| 140 |
|
|
<p>
|
| 141 |
|
|
<span class="note">Note:</span>
|
| 142 |
|
|
If you delete a certificate authority, you must reinstall Opera or download the certificate from the original provider to restore it.
|
| 143 |
|
|
</p>
|
| 144 |
|
|
|
| 145 |
|
|
<p>
|
| 146 |
|
|
Read about <a href="dialogs.html#certificate">accepting certificates</a> for more information.
|
| 147 |
|
|
</p>
|
| 148 |
|
|
|
| 149 |
|
|
<h3>Personal</h3>
|
| 150 |
|
|
|
| 151 |
|
|
<p>
|
| 152 |
|
|
Personal certificates are used to identify you as the genuine user of a Web service.
|
| 153 |
|
|
These certificates are normally installed the first time you sign up for the service.
|
| 154 |
|
|
</p>
|
| 155 |
|
|
|
| 156 |
|
|
<p>
|
| 157 |
|
|
The options to import, export, and delete are basically the same as for certificate authorities (see above).
|
| 158 |
|
|
</p>
|
| 159 |
|
|
|
| 160 |
|
|
<p>
|
| 161 |
|
|
<span class="note">Note:</span>
|
| 162 |
|
|
If you delete a personal certificate, you must create a new one to use the corresponding Web service.
|
| 163 |
|
|
</p>
|
| 164 |
|
|
|
| 165 |
|
|
<h2 id="security-warnings">Security warnings</h2>
|
| 166 |
|
|
|
| 167 |
|
|
<p>
|
| 168 |
|
|
By default, Opera will warn you before you submit
|
| 169 |
|
|
</p>
|
| 170 |
|
|
|
| 171 |
|
|
<ul>
|
| 172 |
|
|
<li>a form insecurely</li>
|
| 173 |
|
|
<li>a Web page for validation</li>
|
| 174 |
|
|
</ul>
|
| 175 |
|
|
|
| 176 |
|
|
<p>
|
| 177 |
|
|
Submitting forms to, for example, search engines and open discussion forums is harmless.
|
| 178 |
|
|
</p>
|
| 179 |
|
|
|
| 180 |
|
|
<p>
|
| 181 |
|
|
<span class="note">Tip:</span>
|
| 182 |
|
|
Enable the security warnings if you are concerned about unintentionally sending sensitive data over the Internet.
|
| 183 |
|
|
</p>
|
| 184 |
|
|
|
| 185 |
|
|
<p>
|
| 186 |
|
|
<a target="_blank" href="http://www.opera.com/support/service/security/">Learn more about security</a>
|
| 187 |
|
|
</p>
|
| 188 |
|
|
|
| 189 |
|
|
<p class="copyright">Copyright © 1995 - 2003 Opera Software ASA. <span class="nowrap">All rights reserved.</span></p>
|
| 190 |
|
|
|
| 191 |
|
|
</body>
|
| 192 |
|
|
</html>
|
| 193 |
|
|
|
