57 lines
1.9 KiB
Markdown
57 lines
1.9 KiB
Markdown
# VPN Server
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The cluster VPN created by Kilo can also be used by peers as a gateway to access the Internet.
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In order configure a local machine to use the cluster VPN as a gateway to the Internet, first register the local machine as a peer of the cluster following the steps in the [VPN docs](./vpn.md).
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Once the machine is registered, generate the configuration for the local peer:
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```shell
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PEER=squat # name of the registered peer
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kgctl showconf peer $PEER > peer.ini
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```
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Next, the WireGuard configuration must be modified to enable routing traffic for any IP via a node in the cluster.
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To do so, open the WireGuard configuration in an editor, select a node in the cluster, and set the `AllowedIPs` field of that node's corresponding `peer` section to `0.0.0.0/0, ::/0`:
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```shell
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$EDITOR peer.ini
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```
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The configuration should now look something like:
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```ini
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[Peer]
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PublicKey = 2/xU029dz/WtvMZAbnSzmhicl8U1/Y3NYmunRr8EJ0Q=
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AllowedIPs = 0.0.0.0/0, ::/0
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Endpoint = 108.61.142.123:51820
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```
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The configuration can then be applied to the local WireGuard interface, e.g. `wg0`:
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```shell
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IFACE=wg0
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sudo wg setconf $IFACE peer.ini
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```
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Next, add routes for the public IPs of the WireGuard peers to ensure that the packets encapsulated by WireGuard are sent through a real interface:
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```shell
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default=$(ip route list all | grep default | awk '{$1=""; print $0}')
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for ip in $(sudo wg | grep endpoint | awk '{print $2}' | sed 's/\(.\+\):[0-9]\+/\1/'); do
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sudo ip route add $ip $default
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done
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```
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Finally, the local machine can be configured to use the WireGuard interface as the device for the default route:
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```shell
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sudo ip route delete default
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sudo ip route add default dev $IFACE
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```
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The local machine is now using the selected node as its Internet gateway and the connection can be verified.
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For example, try finding the local machine's external IP address:
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```shell
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curl https://icanhazip.com
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```
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