{"id":23157,"date":"2026-05-06T09:30:52","date_gmt":"2026-05-06T09:30:52","guid":{"rendered":"https:\/\/atalnetworks.com\/?p=23157"},"modified":"2026-05-06T11:06:48","modified_gmt":"2026-05-06T11:06:48","slug":"cloud-security-strategies-to-protect-your-infrastructure","status":"publish","type":"post","link":"https:\/\/atalnetworks.com\/ko\/cloud-security-strategies-to-protect-your-infrastructure\/","title":{"rendered":"Cloud Security Strategies to Protect Your Infrastructure"},"content":{"rendered":"

Cloud security strategies<\/b> are the policies, technical controls, and operational practices that protect cloud-based infrastructure from unauthorized access, data breaches, DDoS attacks, and service disruptions. They apply at every layer \u2014 from network perimeter and server configuration to access management and compliance monitoring \u2014 across VPS, dedicated, and bare metal environments.<\/span><\/p>\n

Most businesses focus on application-layer security and forget the infrastructure underneath it. Misconfigured servers, unpatched kernels, exposed SSH ports, and weak access controls account for the majority of cloud breaches \u2014 not sophisticated zero-day exploits. IBM’s Cost of a Data Breach Report 2024 found the global average breach cost reached $4.88 million, with misconfiguration and stolen credentials ranking among the top root causes.<\/span><\/p>\n

The good news: infrastructure-layer security is fully within your control. The strategies below cover every layer of the stack, from your hosting provider’s network up to your application access policies.<\/span><\/p>\n

\n

Table of Contents<\/b><\/h2>\n
    \n
  1. The Security Risk Most Guides Skip<\/a><\/li>\n
  2. 10 Cloud Security Strategies for VPS, Dedicated, and Bare Metal Environments<\/a><\/li>\n
  3. VPS vs. Dedicated Server vs. Bare Metal: Security Comparison<\/a><\/li>\n
  4. Cloud Security Checklist<\/a><\/li>\n
  5. \uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/a><\/li>\n
  6. Build Your Security Strategy on the Right Infrastructure<\/a><\/li>\n<\/ol>\n<\/div>\n

    \"The<\/h2>\n

    The Security Risk Most Guides Skip<\/b><\/h2>\n

    Generic cloud security articles focus almost entirely on AWS IAM policies and Azure security groups. That leaves out the most fundamental security variable of all: <\/span>the infrastructure your workloads run on<\/b>.<\/span><\/p>\n

    Your hosting provider’s architecture sets your security floor. A server running in a Tier-4 data center with DDoS-protected BGP routing, physically isolated hardware, and redundant power is fundamentally different from a server in a Tier-1 facility with shared physical hardware.<\/span><\/p>\n

    At Atal Networks, our infrastructure spans<\/span> 213+ data centers across 196 countries<\/span><\/a>, all built on DDoS-protected BGP networks with isolated KVM virtualization for VPS environments. That means your workload never shares kernel resources with another tenant \u2014 a critical distinction for any security-conscious deployment.<\/span><\/p>\n

    Three infrastructure-layer questions to ask before you deploy:<\/span><\/p>\n

      \n
    1. Does your hosting provider offer network-level DDoS protection, or do you need to layer a third-party scrubbing service?<\/span><\/li>\n
    2. Are VPS environments kernel-isolated (KVM\/Xen) or container-based (OpenVZ)? Kernel isolation prevents certain classes of host-escape attacks.<\/span><\/li>\n
    3. Does the data center carry a Tier-3 or Tier-4 classification? Tier-4 requires 99.995% uptime and full fault tolerance \u2014 Tier-1 does not.<\/span><\/li>\n<\/ol>\n

      Getting these answers before deploying saves you from rebuilding your security stack on a compromised foundation.<\/span><\/p>\n

      \"10<\/h2>\n

      10 Cloud Security Strategies for VPS, Dedicated, and Bare Metal Environments<\/b><\/h2>\n

      1. Network Segmentation and Firewall Configuration<\/b><\/h3>\n

      Network segmentation divides your infrastructure into isolated zones so a breach in one area cannot spread laterally to the rest. Paired with a properly configured firewall, segmentation reduces your blast radius to a fraction of what an unsegmented network exposes.<\/span><\/p>\n

      On a Linux<\/span> VPS<\/span><\/a> \ub610\ub294<\/span> \uc804\uc6a9 \uc11c\ubc84<\/span><\/a>, UFW (Uncomplicated Firewall) provides a clean interface over iptables:<\/span><\/p>\n

      # Enable UFW<\/span><\/p>\n

      ufw enable<\/span><\/p>\n

       <\/p>\n

      # Default deny all inbound<\/span><\/p>\n

      ufw default deny incoming<\/span><\/p>\n

      ufw default allow outgoing<\/span><\/p>\n

       <\/p>\n

      # Allow SSH on a custom port (example: 2222)<\/span><\/p>\n

      ufw allow 2222\/tcp<\/span><\/p>\n

       <\/p>\n

      # Allow HTTPS<\/span><\/p>\n

      ufw allow 443\/tcp<\/span><\/p>\n

       <\/p>\n

      # Allow HTTP<\/span><\/p>\n

      ufw allow 80\/tcp<\/span><\/p>\n

       <\/p>\n

      # Check status<\/span><\/p>\n

      ufw status verbose<\/span><\/p>\n

       <\/p>\n

      The default-deny inbound rule is non-negotiable. Every port you open is an attack surface. Open only what your application requires and close everything else.<\/span><\/p>\n

      For multi-server environments, use private networking to route internal traffic and expose only necessary services to the public internet. Atal Networks’ VPS plans include private IP networking \u2014 use it to keep database, cache, and internal service traffic off the public interface entirely.<\/span><\/p>\n

      \"2.<\/h3>\n

      2. SSH Hardening and Access Control<\/b><\/h3>\n

      SSH is the primary remote access protocol for Linux servers and also one of the most attacked. Automated bots scan the internet continuously for servers with default SSH configurations \u2014 exposed root login on port 22 with password authentication.<\/span><\/p>\n

      Harden SSH by editing <\/span>\/etc\/ssh\/sshd_config<\/span>:<\/span><\/p>\n

      # Disable root login<\/span><\/p>\n

      PermitRootLogin no<\/span><\/p>\n

       <\/p>\n

      # Disable password authentication (force key-based auth)<\/span><\/p>\n

      PasswordAuthentication no<\/span><\/p>\n

       <\/p>\n

      # Change default port<\/span><\/p>\n

      Port 2222<\/span><\/p>\n

       <\/p>\n

      # Limit login attempts<\/span><\/p>\n

      MaxAuthTries 3<\/span><\/p>\n

       <\/p>\n

      # Disable empty passwords<\/span><\/p>\n

      PermitEmptyPasswords no<\/span><\/p>\n

       <\/p>\n

      # Restrict to specific users<\/span><\/p>\n

      AllowUsers yourusername<\/span><\/p>\n

       <\/p>\n

      # Set idle timeout (seconds)<\/span><\/p>\n

      ClientAliveInterval 300<\/span><\/p>\n

      ClientAliveCountMax 2<\/span><\/p>\n

       <\/p>\n

      After editing, restart the SSH service:<\/span><\/p>\n

      systemctl restart sshd<\/span><\/p>\n

       <\/p>\n

      Install Fail2ban to automatically ban IPs that exceed failed login thresholds:<\/span><\/p>\n

      apt install fail2ban -y<\/span><\/p>\n

      systemctl enable fail2ban<\/span><\/p>\n

      systemctl start fail2ban<\/span><\/p>\n

       <\/p>\n

      Fail2ban monitors <\/span>\/var\/log\/auth.log<\/span> and applies temporary iptables bans after configurable failure counts. The default SSH jail bans an IP after 5 failed attempts within 10 minutes for 10 minutes \u2014 adjust these thresholds based on your risk tolerance.<\/span><\/p>\n

      \"3.<\/h3>\n

      3. DDoS Mitigation at the Infrastructure Level<\/b><\/h3>\n

      A Distributed Denial of Service attack floods your server with traffic until it becomes unresponsive. Software-layer mitigations like rate limiting are effective against small-scale attacks but fail against volumetric attacks measured in hundreds of Gbps.<\/span><\/p>\n

      Infrastructure-level DDoS protection operates at the network layer, before traffic reaches your server. BGP Anycast routing directs incoming traffic through scrubbing centers that filter malicious packets and forward clean traffic to your origin. This approach absorbs volumetric attacks without impacting legitimate users.<\/span><\/p>\n

      \uc6b0\ub9ac\uc758<\/span> Linux VPS \ud638\uc2a4\ud305<\/span><\/a> \uacfc<\/span> \ubca0\uc5b4 \uba54\ud0c8 \uc11c\ubc84<\/span><\/a> plans include DDoS-protected infrastructure at the network layer. That means you benefit from scrubbing capacity without paying separately for a third-party CDN or scrubbing service.<\/span><\/p>\n

      At the application layer, complement infrastructure DDoS protection with:<\/span><\/p>\n