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https://github.com/robertdebock/docker-cntlm
A container to function as a proxy. Other containers can link to this one for their web access.
https://github.com/robertdebock/docker-cntlm
cntlm docker docker-compose
Last synced: 5 days ago
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A container to function as a proxy. Other containers can link to this one for their web access.
- Host: GitHub
- URL: https://github.com/robertdebock/docker-cntlm
- Owner: robertdebock
- License: apache-2.0
- Created: 2016-04-11T13:23:22.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2024-01-08T13:59:53.000Z (10 months ago)
- Last Synced: 2024-05-02T02:19:57.710Z (7 months ago)
- Topics: cntlm, docker, docker-compose
- Language: Shell
- Size: 76.2 KB
- Stars: 47
- Watchers: 6
- Forks: 12
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# docker-cntlm
[](https://github.com/robertdebock/docker-cntlm/actions/workflows/build-push-action.yml)
A container to function as a proxy, based on [CNTLM](http://cntlm.sourceforge.net). Other systemc can connect to this proxy for their web access. This container authenticates to an external proxy and can be used by others without authentication details.
```text
+- - - - - - -+ +- - - - - - - - -+
| no password | | password (hash) |
+- - - - - - -+ +- - - - - - - - -+
| |
+------------------+ V +-------+ V +-----------------+ +----------+
| your workstation | ---> | cntlm | ---> | corporate proxy | ---> | internet |
+------------------+ +-------+ +-----------------+ +----------+
```
## Generating a password hash
A password hash needs te be generated once, after which is can be used when running the proxy.
```console
docker run \
-e "USERNAME=my_username" \
-e "DOMAIN=example.com" \
-e "PROXY=proxy.example.com:3128" \
--rm -it robertdebock/docker-cntlm -H
```
Now you have to enter your password (which will not be displayed) and press enter.
Replace:
- `my_username` for your own username.
- `example.com` for you own domain.
> The `PROXY` variable can have any value when generating a hash. For running CNTLM, a correct value is required.
You'll seen output like this:
```text
Password:
PassLM 1AD35398BE6565DDB5C4EF70C0593492
PassNT 77B9081511704EE852F94227CF48A793
PassNTLMv2 640937B847F8C6439D87155508FA8479 # Only for user 'username', domain 'mydomain'
```
## Running the proxy
To run the proxy:
- you'll need the PASSNTLMV2 hash generated in the step before.
- you'll also need the proxy to send traffic to.
This is an example of how to run this container.
``` console
docker run --restart always --name cntlm \
-e "USERNAME=my_username" \
-e "DOMAIN=example.com" \
-e "PASSNTLMV2=MY_HASH_MY_HASH_MY_HASH_MY_HASH_" \
-e "PROXY=proxy.example.com:3128" \
-p 3128:3128 \
robertdebock/docker-cntlm
```
# Required variabled.
|VARIABLE |EXAMPLE |DESCRIPTION |
|------------|----------------------------------|---------------------------------------------|
|`USERNAME` |`my_username` |Your username, without a domain (`@` or `\`).|
|`DOMAIN` |`example.com` |The domain where your user lives. |
|`PASSNTLMV2`|`640937B847F8C6439D87155508FA8479`|The generated hash, see above. |
|`PROXY` * |`proxy.example.com` |The hostname (or IP) of your corporate proxy.|
* = `PROXY` can be a string (single) or a list (mulitple). For example: `example.com:3128;example.com:3129`.
> The `-p 3138:3128` maps the port on a host (left from colon) to a port on the container (right from colon).
# Optional variables
|VARIABLE |EXAMPLE |DESCRIPTION |
|-------------|-----------------|-------------------------------------------------------------------------------|
|LISTEN |`127.0.0.1:8080` |The IP/hostname and port (separated by a colon) to listen to. |
|AUTH | |Auth parameter. |
|PASSNT | |Required for auth method Auth NTLM2SR, Auth NT and Auth NTLM. |
|PASSLM | |equired for auth method Auth LM and Auth NTLM. |
|NOPROXY |`127.0.0.1, 10.*`|For address which should not be routed through the proxy. Comma separated list.|
|OPTIONS |`-v` |Optional variable to enable cntlm features. |
|CUSTOM_CONFIG| | |
> Find [technical details here](http://cntlm.sourceforge.net/cntlm_manual.pdf).
## Mount custom config
If you want to use an existing `cntlm.conf` you can mount it directly by settings the `CUSTOM_CONFIG` environment variable.
``` console
docker run --restart always --name cntlm \
-e "CUSTOM_CONFIG=true" \
-p 3128:3128 \
-v /etc/cntlm.conf:/path/to/your/cntlm.conf \
robertdebock/docker-cntlm
```
## Using in Docker Compose
You can use this container quite well in a docker-compose. Docker compose can simply be used to run as a stand-alone proxy. In that case the docker-compose.yml simply saves all variable, and can be started by running:
```console
docker-compose up
```
You can add the CNTLM service in a set of other containers, and let (outgoing) traffic from you application go through the cntlm proxy.