{"id":75629,"date":"2021-06-28T09:00:00","date_gmt":"2021-06-28T13:00:00","guid":{"rendered":"https:\/\/www.inmotionhosting.com\/support\/?p=75629"},"modified":"2021-08-16T15:12:47","modified_gmt":"2021-08-16T19:12:47","slug":"harden-owncloud-server","status":"publish","type":"post","link":"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/harden-owncloud-server\/","title":{"rendered":"Improve ownCloud Server Security"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/06\/canva-improve-owncloud-security-1024x538.jpg\" alt=\"Improve ownCloud Server Security\" class=\"wp-image-75631\" srcset=\"https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/06\/canva-improve-owncloud-security-1024x538.jpg 1024w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/06\/canva-improve-owncloud-security-300x158.jpg 300w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/06\/canva-improve-owncloud-security-768x403.jpg 768w, https:\/\/www.inmotionhosting.com\/support\/wp-content\/uploads\/2021\/06\/canva-improve-owncloud-security.jpg 1200w\" sizes=\"auto, (min-width: 1360px) 876px, (min-width: 960px) calc(61.58vw + 51px), calc(100vw - 80px)\" \/><\/figure>\n\n\n\n<p>How secure is ownCloud? As with most stable software, the answer depends on how well you protect your instance against ownCloud security issues. There are many ownCloud vulnerabilities listed in the National Vulnerability Database (NVD). Fortunately, there are many countermeasures you can implement to protect your ownCloud server from these and server level cyber intrusions.<\/p>\n\n\n\n<p>If you don\u2019t take such measures, cyber criminals will have a much larger cyber attack surface to hack ownCloud and potentially your cloud server. This is a step-by-step guide for hardening ownCloud, your Linux server, and your personal devices used to work with ownCloud.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#security\">ownCloud Security<\/a><ul><li><a href=\"#apps\">ownCloud Security Apps<\/a><\/li><li><a href=\"#config\">ownCloud Configuration Files<\/a><\/li><\/ul><\/li><li><a href=\"#server\">ownCloud Server Security Improvements<\/a><ul><li><a href=\"#serverapps\">Server Security Applications<\/a><\/li><li><a href=\"#other\">Other Server Hardening Information<\/a><\/li><\/ul><\/li><li><a href=\"#web\">Secure Web Activity<\/a><ul><li><a href=\"#personal\">Securing Personal Devices<\/a><\/li><li><a href=\"#next\" data-type=\"URL\">What\u2019s Next?<\/a><\/li><\/ul><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"security\">ownCloud Security<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"apps\">ownCloud Security Apps<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/install-owncloud-apps\/\">ownCloud apps<\/a> can be installed by using the ownCloud dashboard, terminal, and server management software including cPanel. The ownCloud marketplace has a category dedicated to security apps. There are five that we recommend starting off.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/password-policy-in-owncloud\/\"><strong>Password Policy<\/strong><\/a> forces users to create strong passwords and change them periodically to protect against brute force attacks. It is the fastest way to start mitigating password attacks. Require lowercase letters, uppercase letters, numbers, and special characters. Ensure users can\u2019t bounce between the same two or three passwords throughout a year.<\/p>\n\n\n\n<p>Side note: educate your team on the importance of proper password management and how easy it is to fall victim to dictionary attacks. Suggest teammates check if their email accounts or favorite passwords were included in any data breaches collected at Haveibeenpwned.com. Recommend they use a password manager (1Password, KeePass, etc.) instead of their web browser for storing user credentials.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/owncloud-brute-force-protection\/\"><strong>Brute-Force Protection<\/strong><\/a> does one simple thing: temporarily bans IP addresses after a specified number of failed login attempts. As a result, it grants ownCloud brute force protection from more unauthorized login attempts and encourages better password management in authorized members.<\/p>\n\n\n\n<p class=\"alert alert-warning\">Warn your team about the lockout feature to prevent someone from getting locked out during a time-sensitive project.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/owncloud-antivirus\/\"><strong>Antivirus<\/strong><\/a> integrates your ownCloud instance with ClamAV, a popular Linux antivirus (AV) scanner, on the same server or an external system. Any file uploaded to ownCloud is forcibly scanned for malware and rejected if a malicious signature is detected.<\/p>\n\n\n\n<p class=\"alert alert-info\">A recent update enables you to connect the ownCloud Antivirus app with any AV scanner using the Internet Content Adaptation Protocol (ICAP).<\/p>\n\n\n\n<p>cPanel system administrators can install ClamAV for ownCloud 9.1 and above with a cPanel plugin of the same name. For those searching for a Linux malware scanner, the ease in which you can integrate it with so many other applications supports claims for ClamAV being the best antivirus for Linux.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/checksum-in-owncloud\/\"><strong>Checksum<\/strong><\/a> produces SHA512, CRC32, and MD5 checksums at the click of a button. It isn\u2019t an ownCloud encryption app. Comparing checksums is a fast, effective method for ensuring a file:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Hasn\u2019t changed since you last edited it<\/li><li>Wasn\u2019t corrupted between transferring backups between ownCloud and an external hard drive or other location<\/li><\/ul>\n\n\n\n<p>It\u2019s called integrity checking. Basic usage: run a checksum of the file in ownCloud. Use a PC application to run the local file through the same cryptographic algorithm \u2013 SHA512, MD5, etc. The command line interface (CLI), also known as a terminal or command prompt, may seem intimidating to some. But it is the fastest, secure method on local machines. The software is already installed. It is easiest to open a terminal from the file folder and use the command for your operating system type.<\/p>\n\n\n\n<p class=\"alert alert-info\">Replace \u201cfile.txt\u201d with your full filename.<\/p>\n\n\n\n<p>Windows:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">certutil -hashfile file.txt sha512<\/pre>\n\n\n\n<p>macOS:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">shasum -a 512 file.txt<\/pre>\n\n\n\n<p>Linux and BSD:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">sha512sum file.txt<\/pre>\n\n\n\n<p>The file checksum from both locations should match exactly. Otherwise, at least one was either edited, corrupted, or infected.<\/p>\n\n\n\n<p>Two or multi-factor authentication (TFA\/MFA) comes in many forms. <a href=\"https:\/\/marketplace.owncloud.com\/apps\/twofactor_totp\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>2-Factor Authentication<\/strong><\/a> uses the tried and true QR code and mobile device combination. It\u2019s the best method for smaller teams. Duo Two-Factor Provider, OpenID Connect, and privacyIDEA Two Factor Authentication are enterprise solutions.\u00a0<\/p>\n\n\n\n<p>Before implementing ownCloud 2FA, you must ensure that everyone has the capability to scan a QR code.<\/p>\n\n\n\n<p><strong>File Firewall<\/strong> is an ownCloud Enterprise app for file access per group ID, IP address, and more.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"config\">ownCloud Configuration Files<\/h3>\n\n\n\n<p>ownCloud server configuration files offer additional ways to control how ownCloud uses encryption to protect your data.\u00a0<\/p>\n\n\n\n<p>In the Settings &gt; General section you might see the ownCloud strict transport security notification. Your SSL certificate allows access to your website with an encrypted (HTTPS) connection. The 301 redirect created within your web server or website forces HTTP connections to use HTTPS instead. While great to have, protocol downgrade cyber attacks can bypass this with enough effort.<\/p>\n\n\n\n<p>HTTP Strict Transport Security (HSTS) adds depth to your SSL 301 redirect for better protection. The security HTTP header forces browsers to <em>only<\/em> request encrypted connections from your domain. To add HTTP Strict Transport Security in ownCloud you\u2019ll need to edit your .htaccess (for Apache) or other web server configuration file .<\/p>\n\n\n\n<p>ownCloud wants the header set to last 15552000 seconds, or 180 days. In Apache you\u2019ll need to add the following in the server VirtualHost file with <code>&lt;VirtualHost *:443&gt;<\/code> or .htaccess file under<br><code>#### DO NOT CHANGE ANYTHING ABOVE THIS LINE ####<\/code>.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;IfModule mod_headers.c&gt;<br>\u00a0\u00a0Header always set Strict-Transport-Security \"max-age=15552000; includeSubDomains\"<br>&lt;\/IfModule&gt;<\/pre>\n\n\n\n<p class=\"alert alert-info\">If you have subdomains under your ownCloud domain without an SSL certificate, remove <code>includeSubDomains<\/code> from the code above.<\/p>\n\n\n\n<p>You can use Observatory.Mozilla.org to check the security HTTP headers on your ownCloud server.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"server\">ownCloud Server Security Improvements<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"serverapps\">Server Security Applications<\/h3>\n\n\n\n<p><strong>Use strong passwords<\/strong> for Account Management Panel (AMP), cPanel, and all other user credentials for your Linux server hosting.<\/p>\n\n\n\n<p><strong>Close unneeded ports in your firewall<\/strong> to reduce the effects of denial-of-service (DOS) attacks. ConfigServer Security &amp; Firewall (CSF), Firewalld, and UncomplicatedFirewall (UFW) are the most popular applications right now. InMotion dedicated server administrators can request a Cisco Adaptive Security Appliance (ASA) 5500-X series firewall for superior brute-force protection.<\/p>\n\n\n\n<p><strong>Anti-virus (AV) scanning<\/strong> should be automated and results should be audited regularly. We covered ClamAV above. cPanel server administrators may prefer ImunifyAV for more features in WebHost Manager (WHM).<\/p>\n\n\n\n<p><strong>Keep PHP updated<\/strong>. If you have VPS hosting with root access, uninstall older PHP versions you don\u2019t need.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"other\">Other Server Hardening Information<\/h3>\n\n\n\n<p>There may be hardening guides for your operating system and server administration suite. If you have further questions about securing your Linux server hosting, contact Live Support directly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"web\">Secure Web Activity<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"personal\">Securing Personal Devices<\/h3>\n\n\n\n<p><strong>Strong passwords and passphrases<\/strong> are important for maintaining access control on computers and mobile devices.<\/p>\n\n\n\n<p><strong>A strict firewall and AV scanner<\/strong> should be configured on your PC and smartphone.<\/p>\n\n\n\n<p><strong>Uninstall software you no longer use<\/strong>. If you only use an app for one reason, there\u2019s a good chance you already have another app that can accomplish the same task.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"next\">What\u2019s Next?<\/h3>\n\n\n\n<p>Is ownCloud secure now? Run an ownCloud security audit on your Linux server with some enterprise grade security tools mentioned above to find out.\u00a0Contact Live Support directly with further questions about securing your ownCloud server hosting <\/p>\n\n\n\n<p>Learn more from our <a href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/\">ownCloud Education Channel<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How secure is ownCloud? As with most stable software, the answer depends on how well you protect your instance against ownCloud security issues. There are many ownCloud vulnerabilities listed in the National Vulnerability Database (NVD). Fortunately, there are many countermeasures you can implement to protect your ownCloud server from these and server level cyber intrusions.<a class=\"moretag\" href=\"https:\/\/www.inmotionhosting.com\/support\/edu\/software\/owncloud\/harden-owncloud-server\/\"> Read More ><\/a><\/p>\n","protected":false},"author":57014,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4485],"tags":[],"class_list":["post-75629","post","type-post","status-publish","format-standard","hentry","category-owncloud"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ownCloud Server Security - 4 Important Aspects | InMotion Hosting<\/title>\n<meta name=\"description\" content=\"How secure is ownCloud? 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