networking
28 posts found
Multi-Protocol Network Scanning with bgscan: A Hands-On Guide
bgscan combines modular multi-protocol network probes with an interactive BubbleTea TUI. Learn how to configure scan chains, execute targeted network discovery,…
Cache Invalidation via Surrogate Keys: Edge Architecture and Purge Mechanics
Decouple cache invalidation from URL paths using Surrogate-Key headers for targeted CDN purging.
BGP Flowspec False Positives: When DDoS Filters Block Legitimate Traffic
Flowspec rules are coarse-grained. They catch attack traffic and legitimate traffic alike. How to monitor, whitelist, and protect your critical services from co…
Kernel Socket Tuning for High-Concurrency Load Balancers: TCP_NODELAY, TCP_FASTOPEN, and Listen Backlog
Disable Nagle, enable TCP Fast Open, tune listen backlog. Three socket parameters cut tail latencies 40–60% on modern load balancers.
Why Transport Layer Fingerprinting Will Replace IP Reputation
Perimeter security models that rely on IP reputation fail against residential proxy pools. Edge defense is shifting to transport-layer fingerprinting, inspectin…
Why Dropping All ICMP Breaks Path MTU Discovery
Blocking all ICMP traffic does not hide your servers from network scanners. Instead, it breaks Path MTU Discovery, causing silent connection freezes during TLS …
How to Tunnel Datagrams with MASQUE CONNECT-UDP Over HTTP/3
Configure RFC 9298 MASQUE CONNECT-UDP over HTTP/3 to tunnel datagrams without head-of-line blocking.
TPROXY vs REDIRECT: Transparent Socket Interception on Linux
Intercepting routed TCP and UDP traffic on a Linux gateway without rewriting packet headers requires Netfilter TPROXY. Here is why REDIRECT breaks UDP and conne…
Eliminating Multi-Core Socket Contention with SO_REUSEPORT and SO_INCOMING_CPU
High-throughput TCP servers on multi-core Linux hit latency walls from accept queue spinlocks. Learn how SO_REUSEPORT and SO_INCOMING_CPU isolate socket queues …
X25519MLKEM768 vs X25519: Evaluating Hybrid Post-Quantum Key Encapsulation
A technical comparison of X25519 and hybrid X25519MLKEM768 in TLS 1.3, evaluating handshake wire overhead, CPU cycles, cryptanalytic resilience, and edge middle…