What Is VLAN Hopping Attacks? VLAN hopping is a type of network attack that exploits certain properties of the VLAN (Virtual Local Area Network) setup, particularly on switches, to gain unauthorized access to traffic of other VLANs that would normally be restricted. VLANs are used to segment network traffic, with the purpose of increasing security and performance by… Read More »
How to Secure Your Network with Cisco Routers Before we look at how to secure Cisco routers, let’s briefly summarise the role routers play in network security The Role of Routers in Network Security As you must know, routers are used for forwarding traffic between different networks based on Layer 3 IP addresses and provide access to network… Read More »
What is PPP? A point-to-point connection is the most common type of WAN connection. PPP connections are used to connect LANs to service provider WANs and to connect LAN segments within an organization network. A LAN-to-WAN point-to-point connection is also referred to as a serial connection or leased-line connection because the lines are leased from a carrier (usually a telephone company)… Read More »
What is NAT Overload or Port Address Translation PAT. NAT overload sometimes called PAT (Port Address Translation) maps multiple unregistered or private IP addresses to a single registered or public IP address by using different ports. This is what most home broadband routers do. Your ISP assigns an IP address to your router, but you find out that… Read More »
What Are Layer 2 Network Attacks? Layer 2 network attacks target the Data Link layer (Layer 2) of the OSI (Open Systems Interconnection) model. This layer is responsible for node-to-node data transfer and controls the flow of data between two directly connected nodes. It also handles error checking and frames synchronization. Common Layer 2 network components include switches,… Read More »
