diff --git a/README.md b/README.md
index b49daec..5ad9606 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,20 @@
-# ingress
+# `network.tjo.cloud`
-Handling all Ingress traffic
+Handling networking between nodes and between virtual machines.
-## Setting up
+# Architecture
+
+
+
+__WAN interface__ either represents an actual public interface (on Hetzner) or an interface in home LAN that has port-forwarded ports to it from home router.
+
+__LAN interface__ is an ordinary lan network.
+
+__ingress.tjo.cloud__ has port-forwarded all public ports to it (22, 25, 80, 443, 587 etc.). No other VM is accessible from the internet.
+
+__network.tjo.cloud__ establishes Tailscale VPN connection between other network.tjo.cloud VMs. Using subnet routing it makes it possible that each VM can connect to all other VMs on any Proxmox host.
+
+# Setting up new Host
### 1. Add new device to terraform.tfvars.
diff --git a/docs/arhitecture.excalidraw.svg b/docs/arhitecture.excalidraw.svg
new file mode 100644
index 0000000..d966dff
--- /dev/null
+++ b/docs/arhitecture.excalidraw.svg
@@ -0,0 +1,10 @@
+
+
+ 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
+
+
+
+
+ Proxmox Host network.tjo.cloud VM OPNsense 1x WAN 1x LAN ingress.tjo.cloud NGINX 1x LAN kubernetes.tjo.cloud Kubernetes Node 1x LAN External Traffic Tailscale Connection between hosts
\ No newline at end of file