gre-on-wg/README.md

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2023-06-15 01:05:12 +02:00
# gre-on-wg
Create a GRETAP mesh network on top of wireguard.
## Usage
`gre-on-wg WG_QUICK_CONFIG_FILE ADDRESS_TRANSLATIONS`
The first argument is the path to a wg-quick config file, while the
second argument provides address translations for wireguard internal ip
addresses to the new addresses.
The wireguard configuration must have the `Address` config in the
`[Interface]` section set to exactly **one** address, similarly every
`[Peer]` section may only contain **one** AllowedIPs entry with **one**
addresss.
The translation file should contain lines of the following format:
`<wireguard private ip> <space> <new bridge network ip>`
### Example
Consider the following wg0.conf file
```
[Interface]
Address = 192.168.3.100/24
[Peer]
AllowedIPs = 192.168.3.101/32
[Peer]
AllowedIPs = 192.168.3.102/32
[Peer]
AllowedIPs = 192.168.3.103/32
```
And the following translation file
```
192.168.3.100/24 192.168.4.100/24
192.168.3.101/24 192.168.4.101/24
192.168.3.102/24 192.168.4.102/24
192.168.3.103/24 192.168.4.103/24
```
This would result in the creation of the bridge network `wg0br1` on host
`192.168.3.100` where the different peers have the addresses
`192.168.4.10[0123]`. Additionally the point-to-point networks
`wg0gre[1234]` would be created.