Investigating a Slow Internet Connection
A real-world troubleshooting narrative that narrows intermittent network slowness across proxies, DNS, routing, and Wi-Fi.
Tag: networking
6 posts, newest first.
NETWORKING Forwarding Traffic with iptables
A practical iptables setup for relaying TCP connections through an intermediate server with DNAT and SNAT rules.
Network and System Commands on OS X
A command reference for inspecting listening ports, network connections, and system calls on OS X with lsof, netstat, telnet, and dtruss.
Notes on Socket Programming
Systems-level socket notes on EAGAIN, MTU and MSS, send and receive buffers, and the effects of Nagle's algorithm.
Notes on Python Sockets
Python socket notes covering connection identity, listen queues, SO_REUSEADDR, TCP framing, and related API behavior.
Slow Networking After an Ubuntu Kernel Upgrade
A troubleshooting account of tracing severe network instability after an Ubuntu kernel upgrade to the r8169 driver.