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Today I’ll introduce with you a VPS server provider which is the best at its price and performance wise also. They are providing World's fastest cloud server as well as Private Cloud with MaxIOPS block storage services. Start Your Free Trial for 5 Months, Use Promo Code: AQX767 Sign Up Link All cloud servers are deployed on enterprise-grade hardware. Together with Upcloud in-house developed software and proprietary MaxIOPS storage technology, you will get industry-leading performance at all times. Cloud servers are deployed in less than 45 seconds . With incredibly fast boot times, you will get up and running within minutes. Yes  Upcloud  , as the VPS provider it includes DDOS protection, Pure SSD and obviously Fair Usage i.e. no issue in the peak time (safe from noisy neighbors). I am using two VMs on Upcloud and Migrated from AWS & Azure . Azure Linux instance is very slow to rebbot . Also Linode took more time to reboot the VMs . I was very frustrat...

MailScanner is a highly respected open source email security system design for Linux-based email gateways. It is used at over 40,000 sites around the world, protecting top government departments, commercial corporations and educational institutions. This technology has fast become the standard email solution at many ISP sites for virus protection and spam filtering. MailScanner scans email for viruses, spam, phishing, malware, and other attacks against security vulnerabilities and plays a major part in the security of a network. Install MailScanner First stop and disable postfix. We will use MailScanner in the future. # systemctl stop postfix # systemctl disable postfix Download MailScanner and install: # cd /usr/local/src/ # git clone https://github.com/MailScanner/v5.git # cd v5 # cd builds # rpm -ivh MailScanner-5.2.2-1.rhel.noarch.rpm # /usr/sbin/ms-configure 1. Hit Enter to start 2. Intsall an MTA? [1] : N 3. Install EPEL? : n 4. Install missing tnef via RPM? ...

Country-level filtering in CSF uses the Maxmind GeoLite Country database to obtain CIDR (Classless Inter-Domain Routing) ranges for specific countries. Each CIDR range covers all the IP addresses assigned to that country. There are a number of reasons why a server administrator may wish to block traffic from a specific country, with reducing bandwidth, minimizing exposure to security risks, and ensuring that a site’s content is viewable only in geographic locations where it is permitted among the most common. However, there are several important factors to consider before choosing to filter traffic at the country level: A small percentage of unwanted traffic still may get through, and a small percentage of desired traffic could be blocked, because: the CIDR range lists used for country-level blocks are not 100 percent accurate. some Internet Service Providers and web services use non-geographic IP addresses for their clients. proxy services and virtual private networks can be us...

reCaptcha plugin for RoundCube is a good way to protect your server against brute-force attacks on a Webmail. We will install it from the plugin's repository https://github.com/dsoares/rcguard.git . The addon was tested on CWP7.admin, CentOS Linux release 7.6.1810 (Core ) and  RoundCube version 1.2.3 & also this addon tested with  RoundCube version 1.3.8 Let's add the Google's reCaptcha into the RoundCube's login form on CWP. Step 1: First install git on your server. If it's missing you can install it either from your OS repository with a package manager or from sources. Install Git # yum install git -y Clone the plugin through git # cd /usr/local/cwpsrv/var/services/roundcube/plugins/ # git clone https://github.com/dsoares/rcguard.git rcguard If you see an error you should read everything carefully and try to resolve it. Please feel free to contact us if anything goes wrong here. Change directory permission # chown -R cwpsvc:cwpsvc rcguard/ Ren...

Goto the Rouncube Plugin Directory # cd /usr/local/cwpsrv/var/services/roundcube # composer require kolab/calendar Follow the snapshot instruction Edit the configuration as follows # vi plugins/calendar/config.inc.php // backend type (database, google, kolab) $config['calendar_driver'] = "database"; // default calendar view (agendaDay, agendaWeek, month) $config['calendar_default_view'] = "month"; // show a birthdays calendar from the user's address book(s) $config['calendar_contact_birthdays'] = true; // general date format (only set if different from default date format and not user configurable) $config['calendar_date_format'] = "dd-MM-yyyy"; // time format (only set if different from default date format) // $config['calendar_time_format'] = "HH:mm"; // short date format (used for column titles) // $config['calendar_date_short'] = 'M-d'; // long date format (used for...