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dockerfiles/obfsproxy/README.md
2016-05-01 09:06:20 +08:00

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OpenVPN over Obfsproxy
======================
`Obfsproxy` is a pluggable transport proxy written in python.
It provides several obfuscation method. I consider `scramblesuit` the best.
I will update this image if there's better one.
![obfsproxy](http://www.cs.kau.se/philwint/scramblesuit/images/big_picture.png)
`scramblesuit` can transport any application that supports SOCKS.
This includes `Tor`, `VPN`, `SSH`, and many other protocols.
We can transport `OpenVPN` over `Obfsproxy`, so that firewall cannot detect it.
In the following example, you should run `vimagick/openvpn` container first.
Don't forget to edit `/etc/openvpn/openvpn.conf` to use `proto tcp`.
## docker-compose.yml
```
data:
image: busybox
volumes:
- /etc/openvpn
server:
image: vimagick/openvpn
ports:
- "1194:1194/tcp"
volumes_from:
- data
cap_add:
- NET_ADMIN
restart: always
obfsproxy:
image: vimagick/obfsproxy
ports:
- "4911:4911"
links:
- server:openvpn
environment:
- PASSWORD=J23TNHPJPAOQJLTCPLFD4CQYVFY6MEVP
- DEST_ADDR=openvpn
- DEST_PORT=1194
- LISTEN_ADDR=0.0.0.0
- LISTEN_PORT=4911
restart: always
```
To link a existing `openvpn` container, please use `external_links` instead of `links`.
```
obfsproxy:
image: vimagick/obfsproxy
ports:
- "4911:4911"
external_links:
- openvpn_server_1:openvpn
environment:
- PASSWORD=J23TNHPJPAOQJLTCPLFD4CQYVFY6MEVP
- DEST_ADDR=openvpn
- DEST_PORT=1194
- LISTEN_ADDR=0.0.0.0
- LISTEN_PORT=4911
restart: always
```
The default run mode is `server`. You can also run container in `client` mode.
The following example shows us how to make a OpenVPN relay:
```
obfsproxy:
image: vimagick/obfsproxy
ports:
- "1194:1194/tcp"
environment:
- PASSWORD=J23TNHPJPAOQJLTCPLFD4CQYVFY6MEVP
- DEST_ADDR=vpn.easypi.info
- DEST_PORT=4911
- RUN_MODE=client
- LISTEN_ADDR=0.0.0.0
- LISTEN_PORT=1194
restart: always
```
The password should be encoded by Base32 with fixed length.
You can generate one via this command:
```
python -c 'import base64, os; print base64.b32encode(os.urandom(20))'
```
Note: There's no ports exposed in Dockerfile. You need to expose port explicitly.