VLANS One of the technologies used to improve network performance is the separation of large broadcast domains into smaller ones. This article describes how to configure, manage, and troubleshoot VLANs and VLAN trunks. It will also explore security considerations and strategies related to VLANs and trunks, and best practices for VLAN design. Networking
MAC Address Complete Guide MAC addresses play a crucial role in the data link layer (Layer 2) of the Open Systems Interconnection (OSI) model. MAC addresses are used to send Ethernet frames between two stations in the same local area network. Each station has a unique MAC address that is used to identify who is the sender (source mac address) and who the receiver (destination mac address) is. Networking
Linux TCP keepalive TCP keepalive settings play a crucial role in network performance and resource management. By following the best practices and adjusting the settings to suit your specific needs, you can optimize your system’s ability to detect and clean up stale network connections while maintaining optimal performance. Networking Linux
IP Packet Structure IPv4 is the most widely used version of the Internet Protocol on the internet, and it is responsible for the rules of data transmission between the computing machines. Networking
Fallacies of Distributed Systems Fallacies of distributed systems are a set of assertions made by L Peter Deutsch and others at Sun Microsystems describing false assumptions that programmers new to distributed applications invariably make. Architecture
Bridge vs. Switch The difference between these two networking devices has been an unsolvable mystery to me for quite some time. For a while, I used to use the words 'bridge' and 'switch' interchangeably. But after getting more into networking, I started noticing that some people tend to see them as rather different devices... So, maybe I've been totally wrong? Maybe saying 'bridge aka switch' is way too inaccurate? Networking
Computer Networking Introduction: Ethernet and IP This article is my layman's attempt to sort the basic things out with the minimum words and maximum drawings. The primary focus will be on the Data link layer (OSI L2) of wired networks where the Ethernet is the king nowadays. But I'll slightly touch upon its neighboring layers too. Networking
BIND: Disabling IPv6 responses in bind dns server When using Bind9 as DNS service in your own network, it can be helpful to disable IPv6 (AAAA) responses to avoid the client to try to communicate via IPv6 if it hasn't been setup. Debian Linux Networking
BIND DNS server - permission denied How Fix BIND DNS server permission denied problem after log directory or log file change. Bind server failed with error: isc_stdio_open failed: permission denied Debian Linux Networking
Bonding - teaming 802.3ad LACP on Debian Server NIC teaming (Ling Aggregation) presents an interesting solution to redundancy and high availability in the server/workstation computing realms. With the ability to have multiple network interface cards, an administrator can become creative in how a particular server accessed or create a larger pipe for traffic to flow through to the particular server. Debian Linux Networking
Debian - Source Routing In some circumstances we want to route packets differently depending not only on ip destination addresses, but also on other packet fields: source address, IP protocol, transport protocol ports, or even packet payload. This task is called policy based routing - PBR. Debian Linux Networking
Debian Permanent Static Routes In this tutorial we are going to learn how to add permanent (persistent) static route in Debian or Ubuntu Linux. Debian Linux Networking
