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Added X-Xss-Protection snippet #86

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Added X-Xss-Protection snippet #86

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mdmcginn Oct 13, 2017
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16 changes: 16 additions & 0 deletions README.md
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Expand Up @@ -39,6 +39,8 @@ What we are doing here is mostly collecting useful snippets from all over the in
- [Password Protect a File or Several Files](#password-protect-a-file-or-several-files)
- [Block Visitors by Referrer](#block-visitors-by-referrer)
- [Prevent Framing the Site](#prevent-framing-the-site)
- [Help to Prevent Cross-Site Scripting](#help-to-prevent-cross-site-scripting)
- [Prevents Mime-Sniffing the Incorrect Content-Type](#prevents-mime-sniffing-the-incorrect-content-type)
- [Performance](#performance)
- [Compress Text Files](#compress-text-files)
- [Set Expires Headers](#set-expires-headers)
Expand Down Expand Up @@ -330,6 +332,20 @@ SetEnvIf Request_URI "/starry-night" allow_framing=true
Header set X-Frame-Options SAMEORIGIN env=!allow_framing
```

### Help to Prevent Cross-Site Scripting
This uses the built-in reflective XSS protection found in Internet Explorer, Chrome and Safari (Webkit) to block the response if it detects an attack.
[Source](https://scotthelme.co.uk/hardening-your-http-response-headers/#x-xss-protection)
``` apacheconf
Header always set X-Xss-Protection "1; mode=block"
```

### Prevents Mime-Sniffing the Incorrect Content-Type
This reduces the risk of a file, such as an cleverly-misnamed executable, being treated as a different content-type by the browser than the one being declared by the server. It also reduces exposure to drive-by downloads.
[Source](https://scotthelme.co.uk/hardening-your-http-response-headers/#x-content-type-options)
``` apacheconf
Header always set X-Content-Type-Options "nosniff"
```

## Performance
### Compress Text Files
``` apacheconf
Expand Down