https://github.com/h4sh5/greu

GRE Over UDP tunnel (works on both BSD and Linux)
https://github.com/h4sh5/greu

Last synced: about 1 month ago
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GRE Over UDP tunnel (works on both BSD and Linux)

• Host: GitHub
• URL: https://github.com/h4sh5/greu
• Owner: h4sh5
• Created: 2020-05-01T14:18:50.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2024-04-28T05:00:23.000Z (7 months ago)
• Last Synced: 2024-04-28T07:14:17.420Z (7 months ago)
• Language: C
• Size: 22.5 KB
• Stars: 7
• Watchers: 1
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# greu

GRE Tunnel over UDP

Prerequisites for linux:

`apt install libevent-dev make -y`

To compile:

```

./configure

make

```

This program can act both as a server and as a client, and can establish ETH (tap) or IP (tun) links between unix machines. 

It doesn't work on OSX or Windows, due to the way it interacts with network drivers (tuntap).

It can create a VPN-like environment. It's like a basic implementation of RFC 8086 (https://tools.ietf.org/html/rfc8086)

## Usage

### Linux usage

Server mode with TAP (the generated encryption key will be printed to terminal):

```

sudo ./greu -e tap0 -l 0.0.0.0

```

Client mode with TAP:

```

./greu -e tap0 -K  server_ip

```