Then the client entry point script has access to the proxy container's IP via an environment variable.īy the way, if you can get away with using mitmproxy in non-transparent mode (configure the client explicitly to use an HTTP proxy), I'd highly recommend it. After installation, mitmproxy, mitmdump and mitmweb are also added to your PATH and can be invoked from the command line. Im trying to route all traffic of a docker container through mitmproxy running in another docker container. We also provide standalone binaries, they take significantly longer to start as some files need to be extracted to temporary directories first. Running docker container through mitmproxy. Container linking makes that easier: you can start the proxy container, and link it when starting the client container. To install mitmproxy on Windows, download the installer from. If this is a setup you'll be repeating regularly, consider using an entry point script on the client image that will set this up for you automatically when the container starts. In the "client" container, just use ip route commands to change the default gateway to the proxy container's IP address on the docker bridge. mitmproxy is your swiss-army knife for debugging, testing, privacy measurements, and penetration testing. But found there is no clear/easy guide to achieve this. I use a small start script as the proxy image's entry point for this since network settings changes occur at container runtime only and cannot be specified in a Dockerfile or otherwise persisted. Hey Guys, While working on one of the project, I needed to monitor the network on one of docker container. mitmproxy is an interactive man-in-the-middle proxy for HTTP and HTTPS with a console interface. In the "proxy" container, configure the iptables pre-routing NAT rule according to the mitmproxy transparent mode instructions, then start mitmproxy (with the -T flag to enable transparent mode). ![]() Make sure to use that option when starting both containers, since they both require some network adjustments to enable transparent packet interception. Docker Images You can use the official mitmproxy images from DockerHub. I was given a couple of Docker images for my automated testing on MacOS - one for mitmproxy (as provided by that third party), the other supports the python/selenium tests I wrote earlier (this image includes Chrome and the necessary drivers/modules it and docker-compose.yml were provided by one of my team members). ![]() ![]() In this case, the one you require is called CAP_NET_ADMIN (full list here: ), so you could add -cap-add NET_ADMIN to your docker run command. By running in privileged mode, you grant all capabilities to the container - but there is also an option to grant individual capabilities as needed. The default capability set granted to containers does not allow a container to modify network settings.
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