[BitBucket user: Sébastien Jodogne]
[BitBucket date: 2017-08-25.14:45:48]

For further reference: In the mainline of Orthanc and for releases >= 1.3.1, configuration option `DicomAlwaysAllowEcho` will have to be set to `false` to protect C-Echo from arising from unknown modalities.

Here is the related changeset: https://hg.orthanc-server.com/orthanc/changeset/3ec85ff48374803e0e796ba8bf0923f53f591e4b