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95 lines
3.6 KiB
Markdown
95 lines
3.6 KiB
Markdown
# Etherguard
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[English](#) | [中文](README_zh.md)
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[](code_of_conduct.md)
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A Full Mesh Layer2 VPN based on wireguard-go
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OSPF can find best route based on it's cost.
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But sometimes the latency are different in the packet goes and back.
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I'm thinking, is it possible to find the best route based on the **single-way latency**?
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For example, I have two routes A and B at node N1, both of them can reach my node N2. A goes fast, but B backs fast.
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My VPN can automatically send packet through route A at node N1, and the packet backs from route B.
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Here is the solution. This VPN `Etherguard` can collect all the single-way latency from all nodes, and calculate the best route using [Floyd–Warshall algorithm](https://en.wikipedia.org/wiki/Floyd–Warshall_algorithm).
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Worried about the clock not match so that the measure result are not correct? It doesn't matter, here is the proof (Mandarin): [https://www.kskb.eu.org/2021/08/rootless-routerpart-3-etherguard.html](https://www.kskb.eu.org/2021/08/rootless-routerpart-3-etherguard.html)
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## Usage
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```bash
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Usage of ./etherguard-go:
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-bind string
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UDP socket bind mode. [linux|std]
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You may need std mode if you want to run Etherguard under WSL. (default "linux")
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-cfgmode string
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Running mode for generated config. [none|super|p2p]
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-config string
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Config path for the interface.
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-example
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Print example config
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-help
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Show this help
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-mode string
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Running mode. [super|edge|solve|gencfg]
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-no-uapi
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Disable UAPI
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With UAPI, you can check etherguard status by "wg" command
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-version
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Show version
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```
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## Working Mode
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Mode | Description
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------------|:-----
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Static Mode | No dynamic routing, no handshake server.<br>Similar to original wireguard , all configs are static<br>[Detail](example_config/static_mode/README.md)
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Super Mode | Inspired by [n2n](https://github.com/ntop/n2n). There 2 types of node: SuperNode and EdgeNode<br>EdgeNode must connect to SuperNode first，get connection info of other EdgeNode from the SuperNode<br>The SuperNode runs [Floyd-Warshall Algorithm](https://en.wikipedia.org/wiki/Floyd–Warshall_algorithm)，and distribute the result to all other EdgeNodes.<br>[Detail](example_config/super_mode/README.md)
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P2P Mode | Inspired by [tinc](https://github.com/gsliepen/tinc), There are no SuperNode. All EdgeNode will exchange information each other.<br>EdgeNodes are keep trying to connect each other, and notify all other peers success or not.<br>All edges runs [Floyd-Warshall Algorithm](https://en.wikipedia.org/wiki/Floyd–Warshall_algorithm) locally and find the best route by it self.<br>**Not recommend to use this mode in production environment, not test yet.**<br>[Detail](example_config/p2p_mode/README.md)
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## Quick start
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[Super mode quick start](example_config/super_mode/README.md)
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## Build
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### No-vpp version
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Build Etherguard.
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Install Go 1.16
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```bash
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add-apt-repository ppa:longsleep/golang-backports
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apt-get -y update
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apt-get install -y wireguard-tools golang-go build-essential git
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```
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Build
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```bash
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make
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```
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### VPP version
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Build Etherguard with VPP integrated.
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You need libmemif.so installed to run this version.
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Install VPP and libmemif
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```bash
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echo "deb [trusted=yes] https://packagecloud.io/fdio/release/ubuntu focal main" > /etc/apt/sources.list.d/99fd.io.list
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curl -L https://packagecloud.io/fdio/release/gpgkey | sudo apt-key add -
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apt-get -y update
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apt-get install -y vpp vpp-plugin-core python3-vpp-api vpp-dbg vpp-dev libmemif libmemif-dev
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```
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Build
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```bash
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make vpp
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```
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