First version
This commit is contained in:
Wolfgang Klinger
parent
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commit
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6 changed files with 1501 additions and 2 deletions
66
README.md
66
README.md
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# openconnect-proxy
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docker openconnect proxy
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# openconnect + tinyproxy
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This Docker image contains an [openconnect client](http://www.infradead.org/openconnect/) and the [tinyproxy proxy server](https://tinyproxy.github.io/)
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on a very small [alpine linux](https://www.alpinelinux.org/) image (requires around 60 MB of download).
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# Run
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First set the variables in `connect` according to your credentials.
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OPENCONNECT_URL=<VPN URL>
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OPENCONNECT_USER=<VPN User>
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OPENCONNECT_OPTIONS="--authgroup <VPN Group> --servercert <VPN Server Certificate>"
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PROXY_PORT=8888
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Next start the container with
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chmod 755 ./connect
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./connect
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The container will be started in the foreground.
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If you want to start it in the background in daemon mode you can call
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./connect -d
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In daemon mode you can view the stderr log with
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docker logs <container ID>
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docker logs `docker ps|grep "wazum/openconnect-proxy"|awk -F' ' '{print $1}'`
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# Configure proxy
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The container is connected via openconnect and you can configure your browser
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to use the proxy on port 8888 (see configuration above),
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e.g. with FoxyProxy or any suitable extension.
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Or set environment variables with
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export http_proxy="http://127.0.0.1:8888/"
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export https_proxy="http://127.0.0.1:8888/"
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(composer, git and others use these)
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# ssh through the proxy
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Install _corkscrew_ (e.g. with `brew install corkscrew` on macOS)
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and if the container is running (see above) connect with
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./connect ssh <user>@<host>
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or if you always use the same port simply add the following in your
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`~/.ssh/config`
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Host <hostname>
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User <user>
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ProxyCommand corkscrew 127.0.0.1 8888 %h %p
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and your connection will be passed through the proxy.
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# Build
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You can build the container yourself with
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docker build -f build/Dockerfile -t wazum/openconnect-proxy:latest ./build
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19
build/Dockerfile
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19
build/Dockerfile
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FROM alpine:3.8
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MAINTAINER Wolfgang Klinger <wolfgang@wazum.com>
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# openconnect is not yet available on main
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RUN apk add --no-cache tinyproxy openconnect --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing
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COPY tinyproxy.conf /etc/tinyproxy.conf
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# https://github.com/gliderlabs/docker-alpine/issues/367
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RUN [ ! -e /etc/nsswitch.conf ] && echo 'hosts: files dns' > /etc/nsswitch.conf
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# Use an up-to-date version of vpnc-script
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COPY vpnc-script /etc/vpnc/vpnc-script
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RUN chmod 755 /etc/vpnc/vpnc-script
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COPY entrypoint.sh /entrypoint.sh
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RUN chmod +x /entrypoint.sh
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ENTRYPOINT ["/entrypoint.sh"]
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10
build/entrypoint.sh
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10
build/entrypoint.sh
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#!/bin/sh
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# Set proxy port
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sed "s/^Port .*$/Port $PROXY_PORT/" -i /etc/tinyproxy.conf
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# Start proxy
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tinyproxy -c /etc/tinyproxy.conf
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# Start openconnect
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echo "$OPENCONNECT_PASSWORD" | openconnect -v -u $OPENCONNECT_USER --no-dtls --passwd-on-stdin $OPENCONNECT_OPTIONS $OPENCONNECT_URL
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331
build/tinyproxy.conf
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331
build/tinyproxy.conf
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##
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## tinyproxy.conf -- tinyproxy daemon configuration file
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##
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## This example tinyproxy.conf file contains example settings
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## with explanations in comments. For decriptions of all
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## parameters, see the tinproxy.conf(5) manual page.
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##
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#
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# User/Group: This allows you to set the user and group that will be
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# used for tinyproxy after the initial binding to the port has been done
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# as the root user. Either the user or group name or the UID or GID
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# number may be used.
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#
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User root
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Group root
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#
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# Port: Specify the port which tinyproxy will listen on. Please note
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# that should you choose to run on a port lower than 1024 you will need
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# to start tinyproxy using root.
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#
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Port 8888
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#
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# Listen: If you have multiple interfaces this allows you to bind to
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# only one. If this is commented out, tinyproxy will bind to all
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# interfaces present.
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#
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#Listen 192.168.0.1
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#
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# Bind: This allows you to specify which interface will be used for
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# outgoing connections. This is useful for multi-home'd machines where
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# you want all traffic to appear outgoing from one particular interface.
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#
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#Bind 192.168.0.1
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#
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# BindSame: If enabled, tinyproxy will bind the outgoing connection to the
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# ip address of the incoming connection.
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#
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#BindSame yes
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#
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# Timeout: The maximum number of seconds of inactivity a connection is
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# allowed to have before it is closed by tinyproxy.
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#
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Timeout 600
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#
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# ErrorFile: Defines the HTML file to send when a given HTTP error
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# occurs. You will probably need to customize the location to your
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# particular install. The usual locations to check are:
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# /usr/local/share/tinyproxy
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# /usr/share/tinyproxy
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# /etc/tinyproxy
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#
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#ErrorFile 404 "/usr/local/share/tinyproxy/404.html"
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#ErrorFile 400 "/usr/local/share/tinyproxy/400.html"
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#ErrorFile 503 "/usr/local/share/tinyproxy/503.html"
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#ErrorFile 403 "/usr/local/share/tinyproxy/403.html"
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#ErrorFile 408 "/usr/local/share/tinyproxy/408.html"
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#
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# DefaultErrorFile: The HTML file that gets sent if there is no
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# HTML file defined with an ErrorFile keyword for the HTTP error
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# that has occured.
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#
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DefaultErrorFile "/usr/local/share/tinyproxy/default.html"
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#
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# StatHost: This configures the host name or IP address that is treated
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# as the stat host: Whenever a request for this host is received,
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# Tinyproxy will return an internal statistics page instead of
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# forwarding the request to that host. The default value of StatHost is
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# tinyproxy.stats.
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#
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StatHost "tinyproxy.stats"
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#
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#
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# StatFile: The HTML file that gets sent when a request is made
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# for the stathost. If this file doesn't exist a basic page is
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# hardcoded in tinyproxy.
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#
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StatFile "/usr/local/share/tinyproxy/stats.html"
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#
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# LogFile: Allows you to specify the location where information should
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# be logged to. If you would prefer to log to syslog, then disable this
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# and enable the Syslog directive. These directives are mutually
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# exclusive.
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#
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#LogFile "/logs/tinyproxy.log"
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#
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# Syslog: Tell tinyproxy to use syslog instead of a logfile. This
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# option must not be enabled if the Logfile directive is being used.
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# These two directives are mutually exclusive.
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#
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#Syslog On
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#
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# Log to stdout if no Syslog and no LogFile given
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#
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# LogLevel:
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#
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# Set the logging level. Allowed settings are:
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# Critical (least verbose)
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# Error
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# Warning
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# Notice
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# Connect (to log connections without Info's noise)
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# Info (most verbose)
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#
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# The LogLevel logs from the set level and above. For example, if the
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# LogLevel was set to Warning, then all log messages from Warning to
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# Critical would be output, but Notice and below would be suppressed.
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#
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LogLevel Info
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#
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# PidFile: Write the PID of the main tinyproxy thread to this file so it
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# can be used for signalling purposes.
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#
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PidFile "/tmp/tinyproxy.pid"
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#
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# XTinyproxy: Tell Tinyproxy to include the X-Tinyproxy header, which
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# contains the client's IP address.
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#
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#XTinyproxy Yes
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#
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# Upstream:
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#
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# Turns on upstream proxy support.
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#
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# The upstream rules allow you to selectively route upstream connections
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# based on the host/domain of the site being accessed.
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#
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# For example:
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# # connection to test domain goes through testproxy
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# upstream testproxy:8008 ".test.domain.invalid"
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# upstream testproxy:8008 ".our_testbed.example.com"
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# upstream testproxy:8008 "192.168.128.0/255.255.254.0"
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#
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# # no upstream proxy for internal websites and unqualified hosts
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# no upstream ".internal.example.com"
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# no upstream "www.example.com"
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# no upstream "10.0.0.0/8"
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# no upstream "192.168.0.0/255.255.254.0"
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# no upstream "."
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#
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# # connection to these boxes go through their DMZ firewalls
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# upstream cust1_firewall:8008 "testbed_for_cust1"
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# upstream cust2_firewall:8008 "testbed_for_cust2"
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#
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# # default upstream is internet firewall
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# upstream firewall.internal.example.com:80
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#
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# The LAST matching rule wins the route decision. As you can see, you
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# can use a host, or a domain:
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# name matches host exactly
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# .name matches any host in domain "name"
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# . matches any host with no domain (in 'empty' domain)
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# IP/bits matches network/mask
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# IP/mask matches network/mask
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#
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#Upstream some.remote.proxy:port
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#
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# MaxClients: This is the absolute highest number of threads which will
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# be created. In other words, only MaxClients number of clients can be
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# connected at the same time.
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#
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MaxClients 10
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#
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# MinSpareServers/MaxSpareServers: These settings set the upper and
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# lower limit for the number of spare servers which should be available.
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#
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# If the number of spare servers falls below MinSpareServers then new
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# server processes will be spawned. If the number of servers exceeds
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# MaxSpareServers then the extras will be killed off.
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#
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MinSpareServers 2
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MaxSpareServers 10
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#
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# StartServers: The number of servers to start initially.
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#
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StartServers 5
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#
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# MaxRequestsPerChild: The number of connections a thread will handle
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# before it is killed. In practise this should be set to 0, which
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# disables thread reaping. If you do notice problems with memory
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# leakage, then set this to something like 10000.
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#
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MaxRequestsPerChild 0
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#
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# Allow: Customization of authorization controls. If there are any
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# access control keywords then the default action is to DENY. Otherwise,
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# the default action is ALLOW.
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#
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# The order of the controls are important. All incoming connections are
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# tested against the controls based on order.
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#
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Allow 127.0.0.1
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#
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# AddHeader: Adds the specified headers to outgoing HTTP requests that
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# Tinyproxy makes. Note that this option will not work for HTTPS
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# traffic, as Tinyproxy has no control over what headers are exchanged.
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#
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#AddHeader "X-My-Header" "Powered by Tinyproxy"
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#
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# ViaProxyName: The "Via" header is required by the HTTP RFC, but using
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# the real host name is a security concern. If the following directive
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# is enabled, the string supplied will be used as the host name in the
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# Via header; otherwise, the server's host name will be used.
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#
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ViaProxyName "tinyproxy"
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#
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# DisableViaHeader: When this is set to yes, Tinyproxy does NOT add
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# the Via header to the requests. This virtually puts Tinyproxy into
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# stealth mode. Note that RFC 2616 requires proxies to set the Via
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# header, so by enabling this option, you break compliance.
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# Don't disable the Via header unless you know what you are doing...
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#
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#DisableViaHeader Yes
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#
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# Filter: This allows you to specify the location of the filter file.
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#
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#Filter "/etc/filter"
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#
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# FilterURLs: Filter based on URLs rather than domains.
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#
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#FilterURLs On
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#
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# FilterExtended: Use POSIX Extended regular expressions rather than
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# basic.
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#
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#FilterExtended On
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#
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# FilterCaseSensitive: Use case sensitive regular expressions.
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#
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#FilterCaseSensitive On
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#
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# FilterDefaultDeny: Change the default policy of the filtering system.
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# If this directive is commented out, or is set to "No" then the default
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# policy is to allow everything which is not specifically denied by the
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# filter file.
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#
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# However, by setting this directive to "Yes" the default policy becomes
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# to deny everything which is _not_ specifically allowed by the filter
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# file.
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#
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#FilterDefaultDeny Yes
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#
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# Anonymous: If an Anonymous keyword is present, then anonymous proxying
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# is enabled. The headers listed are allowed through, while all others
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# are denied. If no Anonymous keyword is present, then all headers are
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# allowed through. You must include quotes around the headers.
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#
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# Most sites require cookies to be enabled for them to work correctly, so
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# you will need to allow Cookies through if you access those sites.
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#
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#Anonymous "Host"
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#Anonymous "Authorization"
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#Anonymous "Cookie"
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#
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# ConnectPort: This is a list of ports allowed by tinyproxy when the
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# CONNECT method is used. To disable the CONNECT method altogether, set
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# the value to 0. If no ConnectPort line is found, all ports are
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# allowed (which is not very secure.)
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#
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# The following two ports are used by SSL.
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#
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#ConnectPort 443
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#ConnectPort 563
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#
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# Configure one or more ReversePath directives to enable reverse proxy
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# support. With reverse proxying it's possible to make a number of
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# sites appear as if they were part of a single site.
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#
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# If you uncomment the following two directives and run tinyproxy
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# on your own computer at port 8888, you can access Google using
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# http://localhost:8888/google/ and Wired News using
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# http://localhost:8888/wired/news/. Neither will actually work
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# until you uncomment ReverseMagic as they use absolute linking.
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#
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#ReversePath "/google/" "http://www.google.com/"
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#ReversePath "/wired/" "http://www.wired.com/"
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#
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# When using tinyproxy as a reverse proxy, it is STRONGLY recommended
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# that the normal proxy is turned off by uncommenting the next directive.
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#
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#ReverseOnly Yes
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#
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# Use a cookie to track reverse proxy mappings. If you need to reverse
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# proxy sites which have absolute links you must uncomment this.
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#
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#ReverseMagic Yes
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#
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# The URL that's used to access this reverse proxy. The URL is used to
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# rewrite HTTP redirects so that they won't escape the proxy. If you
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# have a chain of reverse proxies, you'll need to put the outermost
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# URL here (the address which the end user types into his/her browser).
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#
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# If not set then no rewriting occurs.
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#
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#ReverseBaseURL "http://localhost:8888/"
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Allow 0.0.0.0/0
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1030
build/vpnc-script
Normal file
1030
build/vpnc-script
Normal file
File diff suppressed because it is too large
Load diff
47
connect
Executable file
47
connect
Executable file
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#!/bin/bash
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# Edit this
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OPENCONNECT_USER=
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OPENCONNECT_URL=
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OPENCONNECT_OPTIONS="--authgroup <VPN Group> --servercert <VPN Server Certificate>"
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PROXY_PORT=8888
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# Don't touch this
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container() {
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# Ask for password on the commandline
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stty -echo
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printf "VPN password: "
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read OPENCONNECT_PASSWORD
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stty echo
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printf "\n\n"
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# Start container with proxy on specified port
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docker run -it --rm "$@" --privileged \
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-e OPENCONNECT_URL="$OPENCONNECT_URL" \
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-e OPENCONNECT_OPTIONS="$OPENCONNECT_OPTIONS" \
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-e OPENCONNECT_USER="$OPENCONNECT_USER" \
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-e OPENCONNECT_PASSWORD="$OPENCONNECT_PASSWORD" \
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-e PROXY_PORT="$PROXY_PORT" \
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-p $PROXY_PORT:$PROXY_PORT \
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"wazum/openconnect-proxy:latest"
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}
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ssh_proxy() {
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if hash corkscrew 2>/dev/null; then
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ssh -o ProxyCommand="corkscrew 127.0.0.1 $PROXY_PORT %h %p" "$@"
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else
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printf "The ssh command requires 'corkscrew' to be installed and executable.\n"
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fi
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}
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case $1 in
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ssh)
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shift
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ssh_proxy "$@"
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;;
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*)
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container "$@"
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;;
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esac
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Loading…
Reference in a new issue