TIL: Some Netwokrking, Security & Vim

Find out how to view your routing table, measure bandwidth between your machine & a server, what deep packet inspection is, & some vim motions

Basic Networking

Spent some time having to debug VPN issues, had to monitor performance, & constantly check the routing table

  • ip r - shows your routing table

ip - show / manipulate routing, devices, policy routing and tunnels

  • iperf3 - we used this to test the bandwidth between my machine & VPN server

iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, buffers and protocols (TCP, UDP, SCTP with IPv4 and IPv6).


  • While chatting networking with Maksim, I learnt about the concept of deep packet inspection. that fits right into my security notes. These could use a little more love tbh.

More Vim Motions

  • Shift + G - Takes you to end of file
  • gg takes you to the beginning of a file
  • ctrl + u moves you up half a page
  • guess what ctrl + d does? that’s right, moves you down half a page
  • Also, found a noice vim cheatsteet