Network PC World

When it comes to securing communication over the internet, Virtual Private Networks (VPNs) are a cornerstone of modern networking. Two popular types of VPNs are SSL VPN and IPSec VPN . While both serve to encrypt and secure data, they differ significantly in terms of technology, use cases, and implementation. This blog post will help you understand these differences and choose the right solution for your needs. What is SSL VPN? An SSL VPN uses the Secure Sockets Layer (SSL) or its successor, Transport Layer Security (TLS) , to create a secure connection. It operates at the Application Layer (Layer 7) of the OSI model and is designed to provide secure access to specific resources over the internet. Key Features of SSL VPN: Ease of Use: Accessible via a standard web browser without the need for dedicated client software. Granular Access Control: Allows users to access specific applications or resources rather than the entire network. Port Usage: Uses TCP port 443, which is rarely...

The Complete Public Key Infrastructure (PKI) Process: From Key Generation to Certificate Verification Public Key Infrastructure (PKI) is the backbone of secure communication on the internet. It ensures that sensitive data exchanged between clients and servers remains private and authentic. This blog post will guide you through the entire PKI process, from generating keys to verifying certificates and ensuring they haven't been revoked. 1. Key Pair Generation The first step in PKI is generating a public-private key pair using an asymmetric cryptographic algorithm, such as RSA or ECDSA: The private key is securely stored on the server and never shared. The public key is included in the certificate and shared with the Certificate Authority (CA) during the certificate request process. This key pair enables encryption and decryption, which are essential for secure communication. 2. Creating a Certificate Signing Request (CSR) The server creates a Certificate Signing Request (CSR) to...