# vppn: Virtual Pretty Private Network

## Roadmap

* Peer: router: create process for managing the routing table
* Peer: router: track mediators, enable / disable ...
* Hub: track peer last-seen timestamp
* Peer: local peer discovery - part of RoutingProcessor

## Principles

* Creates an IPv4/24 network with a maximum of 254 peers. (1-254)
* Simple setup: via setup link from the hub.
* Each peer has full network state replicated from the hub.

## Design

* Append nonce to end of packet
  * Then it's readable whether signed or unsiged
* Types of packets to send:
  * standard: encrypt and send
  * Forward via: encrypt, sign and send
  * Forward to: send
* Type of packeting read from interface:
  * Forward to: check signature
  * Forwarded, standard

Incoming from net:
  * Data for iface
  * Packet for forward
  * Packet for routingHandler
* Incoming from iface:
  * Data for peer

## Hub Server Configuration

```
# Create user.
adduser user

# Enable ssh.
cp -r ~/.ssh /home/user/
chown -R user:user /home/user/.ssh

```

Upload `hub` executable:

```
scp hub user@<remote>:~/
```

Create systemd file in `/etc/systemd/system/hub.service

```
Description=hub
Requires=network.target

[Service]
AmbientCapabilities=CAP_NET_BIND_SERVICE
Type=simple
User=user
WorkingDirectory=/home/user/
ExecStart=/home/user/hub -listen <addr>:https -secure=true -root-dir=/home/user
Restart=always
RestartSec=8
TimeoutStopSec=24

[Install]
WantedBy=default.target
```

Add and start the hub server:

```
systemctl daemon-reload
systemctl start hub
```

Get initial password from logs:

```
journalctl -f -u hub -n 100
```

Sign-in and configure.