Networking day

[FilWisher]

We will have a router not plugged into the internet and we will play around with different ways of connecting to each others computers.

We can explore the network stack without touching the internet. A LAN party without the pizza, sweets, or video games.

[FilWisher]

• sockets
• protocols
• servers
• torrenting, etc.

[FilWisher]

We could even do a journey that shows the parallels from:

Echoing text into a file

• echo hello > a.txt;

Opening a fd and echoing text into it

• exec 3<> a.txt; echo hello >&3;

Echoing text into a network file

• echo hello > /dev/tcp...

Echoing a file to a local fd using netcat

• nc localhost -p 8000...

Echoing a file to a network fd using netcat

• nc 192.168.0.53 8000... ...

And at each stage introduce the new bits of the stack involve and how it is different to last time.

[rjmk]

We should make sure we're exploring the diagnostic side of the network as well: netstat and even tcpdump.

We could have people grab pieces of information from the network in challenges to show how easy this is to do (how easy is this to do?)