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Linux Server Security and Hardening

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What is Linux Server Security and Hardening ?

 

Linux servers are widely used in businesses, organizations, and individuals for hosting websites, running applications, and storing data. With the increasing use of the internet, the security of these servers has become a major concern. A security breach on a Linux server can have serious consequences, such as data loss, financial loss, and damage to reputation.

The process of enhancing server security with advanced solutions is known as server strengthening. The demand for this service is greater today than ever in the past. Every day there are many viruses, spyware and malware or brute force threats to server security. The damage they can do once entered is immense. Therefore, you need to take the right proactive steps to prevent it by joining our services today. Linux Server hardening and Security helps protect against such threats and protects your company’s reputation and goodwill. It’s time to take a step in the right direction and contact us today if you don’t want the best for your business!

Server is a very important machine in any organization. This machine stores all the important data related to your business as well as your customers. The loss of data on this machine can pose a big hit to your business and also lead to loss of reputation. The only way to avoid such problems and grow your business is to choose Linux server security and hardening 24x7serversecurity. We have designed these services with foresight to ensure data integrity and security.

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Linux Server Security and Hardening

Server Hardening
  • Apache Hardening– Increased security on Apache.
  • SSH Hardening– Custom SSH Port and limited connections.
  • Bind Hardening– Enable protection against DNS recursion attacks.
  • Ensure Filesystem Permissions– Fix permission on world writable directories and prevent against directory-transversal attacks.
  • /tmp and shm(shared memory) Hardening– Configure noexec, nosuid on tmp and shm mounts.
  • Fetching utilites hardening– Allows root-only access of wget, curl, and other utilties often used in web-based attacks.
  • Remove unnecessary packages– removes RPMS which are not needed to prevent against potential vulnerabilities and free up disk space.
  • Disable unused services– Disable services which are not used.
    Disable unneeded processes– Disable processes which are not needed for server operation.
  • Secure console access
  • PHP Hardening– Enable SuHosin, OpenBaseDir protection and more.
  • FTP, HTTP file upload Scan – Pure-ftp and Apache will be configured to scan all uploaded files using ClamAV. This will highly reduce the risk of virus files being uploaded to your server.
  • Linux Socket Monitor– (Optional)Track changes to Network sockets and Unix domain sockets, effectively a port monitor.
  • System Integrity Monitor– (Optional)services monitor for ‘SysVinit’ systems.
    Linux Environment Security– (Optional)root-only permissions on system binaries .

Firewall Configuration
  • CSF – Packet Inspection (SPI) firewall and Security application.
  • LFD – Detect and prevent Login Intrusion.
  • APF – Configure both ingress and egress firewall protection.
  • BFD – Detect and prevent brute force attacks.
  • CPHulk – Detect and prevent brute force attacks.
Security Audit
  • Rootkit Hunter – Nightly scan to detect system intrusions.
  • Chkrootkit – Nightly scan to detect system intrusions.
Support Servers and Control Panel

We will be performing basic security on new client or server. Below are the actions on security.

  •  CentOS 5, 6, 7 ( cPanel , Plesk , DirectAdmin )
  • RHEL 5, 6, 7 (cPanel, Plesk , DirectAdmin )
  • Fedora (cPanel, Plesk , DirectAdmin )
  • Linux Plain Servers without Control Panel
Server Optimization
  •   Apache Optimization – Apache performance optimization by tweaking settings.( Optional: Install Nginx as a proxy/load balancer for Apache )
  • PHP Configuration – Widely used PHP modules will be enabled for maximum compatibility.
  • MySQL Optimization – MySQL performance Optimization using my.cnf and enabling query caching.
  • PHP Caching – Optimizes PHP performance through
  • Xcache/Eaccelerator/Memcache script caching.
  • Monitoring Apps – We will install MyTOP, Iptraf, and Iftop utilities to easily monitor server performance.
  • Process Resource Monitor – monitor and kill processess overloading the server (Optional)
  • SPRI ( System Priority ) – control server load(optional)
  • CloudFlare Installation
Spam Prevention and Anti-Virus Protection
  • ClamAV – Configure for e-mail and virus scanning (Exim Integration). Enable auto-updating anti-virus definitions.
  • Realtime Blackhole Lists (RBLs) – Configure email server with RBLs loaded to prevent spam.
  • Harden Mailserver Configuration – Prevent against detection of valid e-mail address through brute-force attacks. Also enable HELO verification and other sanity checks.
  • Dictionary Attack Protection – Prevent spammers guessing email addresses on your server.