Only setup networking for containers which need it.

This should mitigate a hypothetical compromise of the scripts used to
manage the CA and other sensitive material.

The examples should still work and make sense although I have not tried
all of them with this change applied.

Note that I did not append the --net=none to all examples because in
some cases network is probably wanted.

* Changing this for all docs was not accepted by @kylemanna.
  https://github.com/kylemanna/docker-openvpn/pull/65#issuecomment-138559257
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Robin Schneider 2015-09-08 15:34:58 +02:00
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@ -5,9 +5,9 @@ As mentioned in the [backup section](/docs/backup.md), there are good reasons to
Execute the following commands. Note that you might want to change the volume `$PWD` or use a data docker container for this. Execute the following commands. Note that you might want to change the volume `$PWD` or use a data docker container for this.
docker run --rm -t -i -v $PWD:/etc/openvpn kylemanna/openvpn ovpn_genconfig -u udp://VPN.SERVERNAME.COM docker run --net=none --rm -t -i -v $PWD:/etc/openvpn kylemanna/openvpn ovpn_genconfig -u udp://VPN.SERVERNAME.COM
docker run --rm -t -i -v $PWD:/etc/openvpn kylemanna/openvpn ovpn_initpki docker run --net=none --rm -t -i -v $PWD:/etc/openvpn kylemanna/openvpn ovpn_initpki
docker run --rm -t -i -v $PWD:/etc/openvpn kylemanna/openvpn ovpn_copy_server_files docker run --net=none --rm -t -i -v $PWD:/etc/openvpn kylemanna/openvpn ovpn_copy_server_files
The [`ovpn_copy_server_files`](/bin/ovpn_copy_server_files) script puts all the needed configuration in a subdirectory which defaults to `$OPENVPN/server`. All you need to do now is to copy this directory to the server and you are good to go. The [`ovpn_copy_server_files`](/bin/ovpn_copy_server_files) script puts all the needed configuration in a subdirectory which defaults to `$OPENVPN/server`. All you need to do now is to copy this directory to the server and you are good to go.
@ -22,7 +22,7 @@ If you want to select the cyphers used by OpenVPN the following parameters of th
The following options have been tested successfully: The following options have been tested successfully:
docker run --volumes-from $OVPN_DATA --rm kylemanna/openvpn ovpn_genconfig -C 'AES-256-CBC' -a 'SHA384' docker run --volumes-from $OVPN_DATA --net=none --rm kylemanna/openvpn ovpn_genconfig -C 'AES-256-CBC' -a 'SHA384'
Changing the `tls-cipher` option seems to be more complicated because some clients (namely NetworkManager in Debian Jessie) seem to have trouble with this. Running `openvpn` manually also did not solve the issue: Changing the `tls-cipher` option seems to be more complicated because some clients (namely NetworkManager in Debian Jessie) seem to have trouble with this. Running `openvpn` manually also did not solve the issue: