Check Point Firewall: Certificate-Based Site-to-Site VPN скачать в хорошем качестве

Check Point Firewall: Certificate-Based Site-to-Site VPN

🔐 Site-to-Site VPN Using Certificates (Step-by-Step) In this video, we configure a site-to-site VPN using certificate-based authentication instead of pre-shared keys. This approach reflects how real enterprise VPNs are deployed in production environments. Rather than relying on a shared secret, both gateways authenticate each other using digital certificates issued by trusted Certificate Authorities (CAs). 🧩 Lab Overview – What We Will Build Two companies connected via a site-to-site VPN Each company has its own Certificate Authority Gateways authenticate using certificates, not passwords Mutual trust is established using exchanged Root CA certificates ⚠️ Why Pre-Shared Keys Are Avoided Pre-shared keys are simple but insecure and difficult to manage: A leaked key compromises the tunnel Rotation requires changes on both sides Poor scalability for multiple VPNs No true identity validation Certificate-based VPNs eliminate these issues. 🛠️ Step 1: Create Root Certificate Authorities Each company creates its own Root CA. This CA is responsible for signing gateway certificates and establishing trust. 🔁 Step 2: Exchange Root CA Certificates The Root CA certificates are exchanged between both companies. This step is mandatory: Without it, gateways cannot validate each other Authentication will fail during VPN negotiation Only public Root certificates are exchanged — never private keys. 📦 Step 3: Import Root Certificates as Trusted CAs Each firewall imports the remote company’s Root CA certificate and creates a Trusted CA object. This tells the firewall: “I trust certificates signed by this authority.” 📄 Step 4: Generate Certificate Signing Requests (CSR) Each gateway generates a CSR: A key pair is created locally The private key stays on the gateway The public key and identity are sent to the CA The CA signs the request and issues a gateway certificate. 🏢 Step 5: Sign Gateway Certificates Using a Central CA Instead of using an internal firewall CA, certificates are signed by a central Windows CA. This allows: Centralized identity management Easier auditing and compliance Certificate revocation from one location Alignment with enterprise security policies 🔒 Step 6: Install Gateway Certificates The signed certificates are installed on each VPN gateway. At this point, each gateway has: Its own identity certificate A trusted Root CA for the remote gateway 🔐 Step 7: VPN Authentication and Tunnel Establishment When a VPN connection is initiated: Gateways exchange certificates Each gateway verifies the certificate signature Trusted CA objects are checked If trust is valid → VPN tunnel is established If trust is missing → connection is rejected ✅ Final Result You now have a secure, scalable site-to-site VPN using certificate-based authentication — without shared secrets. This is the recommended approach for enterprise and production networks. #SiteToSiteVPN #CertificateBasedVPN #IPSecVPN #CheckPoint #CheckPointFirewall #NetworkSecurity #CyberSecurity #PKI #Certificates #WindowsCA #EnterpriseNetworking #FirewallLabs #VPNLab #SecurityEngineering #BlueTeam