diff --git a/Diagrams/Overview.dia b/Diagrams/Overview.dia new file mode 100644 index 0000000..2ab28e1 Binary files /dev/null and b/Diagrams/Overview.dia differ diff --git a/index.html b/index.html index ac423e4..127c568 100644 --- a/index.html +++ b/index.html @@ -48,24 +48,6 @@

Maybe don't go and try building an ISP based off this talk :)

-

How it started

-

One subnet

-

Standard tech shop router with defaults

-

Made mistakes that broke critical applications

- -
- -

So where to from here?

-

linux can do VLANs, lets see if that helps!

- - -
-

What even is a network

Ethernet?

Token Ring?

@@ -92,14 +74,61 @@

Like an onion!

That 7 layer thing from the OSI

Administrative overlays

-

VPNs/Tunnelled +

VPNs and Tunnels

+ +

Layers!

+

This means something something Physical/Logical disconnect

+

Networks are also a bit fractal in nature

+

For the purposes of this talk, we can ignore a lot of complexity

+
+ +

What we're familiar with

+

Diagram showing standard leaf node of a network with a bit cloud containg "The rest of the org"

+
+ +

>What we're familiar with

+

Diagram showing added storage and server network

+

+ +

>How things evolve

+

Uh Oh, we've got a new Datacentre

+
+ +

>How things evolve

+

which has its own lot of storage and servers

-

The Problems

+ +

Anyway, let's get started!

+

What even is a router?

+

Two or more interfaces

+

Some logic to determine where a packet goes

+

+
+	    
+	  
+
+ +

Linux Routing

+

+net.ipv4.ip_forward = 1
+net.ipv6.conf.all.forwarding = 1
+net.ipv6.conf.default.forwarding = 1
+	    
+	  
+

And we're done!

+

Yeah, not really :)

+
+ + Routes! +

+ +

Bits and Pieces

VLAN

OSPF

@@ -112,7 +141,8 @@
ergh, NAT
Why use a 'real' router
OpenWRT
- +
Multi Host IPs (Authoritative DNS example like in the facebook thing)
+

Resources

These slides: https://gitea.pwarren.id.au/pwarren/SysAdmin2022

bird: https://bird.network.cz