IPsec

IPv4 vs IPv6: What Are the Differences?

IPv4 uses 32-bit addresses giving about 4.3 billion possible addresses, while IPv6 uses 128-bit addresses giving a practically unlimited pool, and IPv6 also si…

What is GRE (Generic Routing Encapsulation)?

GRE (Generic Routing Encapsulation) is a tunneling protocol that wraps one network-layer packet inside another, letting two endpoints carry traffic — including…

What is IPsec and How Does It Secure IP Traffic?

IPsec (Internet Protocol Security) is a suite of protocols that authenticates and encrypts IP packets at the network layer, most commonly used to build VPN tun…

VPN Types Explained: Remote Access vs Site-to-Site

A VPN (Virtual Private Network) creates an encrypted tunnel over an untrusted network like the internet, and the two most common types are remote-access VPNs,…

What is a VPN Tunnel?

A VPN tunnel is an encrypted, encapsulated logical connection through which original network packets are wrapped inside new outer packets and carried across an…

Site-to-Site vs Remote-Access VPN: What is the Difference?

A site-to-site VPN permanently connects two whole networks (such as a branch office and a data center) through gateway devices so that every user behind either…

What is WireGuard?

WireGuard is a modern, open-source VPN protocol designed for simplicity, speed, and a minimal attack surface, implemented in only a few thousand lines of code…

What is IPsec vs SSL VPN?

IPsec VPN encrypts traffic at the network layer (Layer 3) using the IPsec protocol suite (IKE for key negotiation, ESP/AH for the actual encryption), typically…

VPN vs VPC Peering: What is the Difference?

A VPN creates an encrypted tunnel over the public internet to connect two networks (such as an on-premises data center and a cloud VPC), while VPC peering dire…