Category: Network Protocols

The QUIC protocol, standardized by the IETF in RFC 9000 and widely adopted in HTTP/3, represents a significant evolution in internet transport protocols. Designed to overcome many of the limitations of TCP, QUIC integrates TLS encryption, stream multiplexing, congestion control, and connection migration within a single, UDP-based transport layer. While QUIC performs well in terrestrial…

Controller-Pilot Data Link Communications, or CPDLC, is a data link protocol used in air traffic management to enable text-based communication between pilots and air traffic controllers. Designed to augment and eventually reduce the reliance on voice communications via VHF or HF radio, CPDLC enhances clarity, efficiency, and reliability in communication, particularly in regions where radio…

As data center architectures continue to evolve to meet the demands of cloud computing, virtualization, and high-performance applications, storage networking protocols have had to adapt accordingly. Among the notable advancements are Fibre Channel over Ethernet (FCoE) and NVMe over Fabrics (NVMe-oF), two distinct technologies that offer ways to transmit storage traffic over network infrastructures. Both…

Border Gateway Protocol (BGP) is the foundational protocol that enables inter-domain routing across the global Internet. Its flexibility and decentralized architecture allow autonomous systems (ASes) to exchange routing information and enforce their own routing policies. However, this flexibility also makes BGP vulnerable to misconfigurations and malicious activities such as route hijacking. Route hijacking occurs when…

Congestion control is a cornerstone of the Transmission Control Protocol (TCP), ensuring reliable and efficient delivery of data across networks while avoiding congestion collapse. Over the years, various congestion control algorithms have been developed to address evolving network conditions and performance expectations. Among the most notable are TCP Reno, TCP Cubic, TCP BBR, and TCP…

Transport Layer Security (TLS) is the cryptographic protocol responsible for securing most of the traffic on the modern Internet, underpinning HTTPS, email encryption, and other secure communications. TLS 1.3, finalized by the IETF in 2018 as RFC 8446, represents a significant leap forward in both performance and security over its predecessors. While TLS 1.2 served…

The Border Gateway Protocol (BGP) is a foundational element of the global Internet, enabling autonomous systems (ASes)—such as Internet service providers, data centers, and large enterprises—to exchange routing information. BGP’s design prioritizes flexibility and scalability, allowing for dynamic adaptation to changes in network topology. However, this flexibility comes at a cost: BGP was built with…

As enterprise networks continue to expand in size, complexity, and exposure to threats, the need for security mechanisms that operate at multiple layers of the network stack has become increasingly apparent. While encryption technologies such as IPsec and TLS are well-established for securing communications at Layers 3 and 4, they do not address threats that…

As modern data centers evolve to meet the demands of cloud computing, virtualization, and tenant isolation, the need for scalable and flexible network segmentation has become increasingly important. Traditional VLAN-based designs, while effective in smaller or more static environments, do not scale adequately in large, multi-tenant architectures due to their limitation of 4096 unique VLAN…

As data centers have evolved into highly virtualized and distributed environments, the need for scalable and flexible network segmentation has grown exponentially. Traditional VLAN-based designs, limited by their 12-bit identifier space and dependence on Layer 2 broadcast domains, have proven insufficient in the era of cloud computing, multi-tenancy, and software-defined networking. In response, overlay tunneling…