FAQ for Users
The website does not operate, what can I do?
Several factors might be involved:
- Are the required Cookies (Shibboleth Identity Provider of the home institution, Discovery Service of the DFN and Shibboleth Service Provider on the Gigamove server) allowed?
- Does another Shibboleth authentication work? It is usually enough to engage a Shibboleth service provider of the home institution.
- The Shibboleth authentication is successful but you are still not granted access? There are two possible causes for this:
- The Shibboleth Identity Provider is not registered in the DFN or does not have the required degree of reliance ('Advanced').
- Not all of the required attributes are provided by the home institution’s Shibboleth Identity Provider. Opening the following URL might help: https://gigamove.rz.rwth-aachen.de/Shibboleth.sso/Session
- Does a firewall, application level proxy etc. block the access?
Is my Network fully functional?
Due to the redundancy of upstream servers a note on duplicated packages might appear.
What about my data?
- How long are filesstored?
The application store the file provided by you for a maximum of 14 days. This period can be adjusted individually. On default it is 7 days. The respective Link is invalid after the expiration and the file will be deleted from the server. The link for providing a requested file does not have an expiration date. If a requested file is uploaded, however, it will be stored on the server for 14 days. Both, provided or requested files, or their respective links, can be deleted manually at any time.
- How can I send a file which exceeds 2 GB (or the browser restrictions)?
Most browsers set a 2 GB upload limit for technical reasons. On exception is Opera in which you can upload files of any size.
There is, however, a possibility of splitting oversized files into several smaller files that can be reassembled by the recipient after the transfer. Several options to do this are introduced below:
- Split with split:
The command split, splits a file in several parts of the same size. With the option '-b n' you can determine the size of the individual files (each file = n bytes), '-b nk' and '-b nm' enables you to give the size in Kilo/Megabyte.
split -b 1024m a 2 GB file
- Reassemble with cat:
With the command cat, the recipient can merge several file into one:
cat one2GBfileaa one2GBfileab > one2gbfile
- Split with split:
There are several useful tools to split and reassemble files:
- How safe is the data exchange?
The whole application is protected via https, this means that data transfer is encrypted and cannot be intercepted. Gigamove offers you to protect the exchange additionally with a password. Those who have the ID, and if required know the password, can download the file. Therefore, the protection of the data exchange depends on whether the ID, for example of the download link, is communicated confidentially and then remains secret. The ID’s are taken out of a total of about 5 x 1024 different ID’s. However, complete security cannot be guaranteed, as ID’s might fall into the wrong hands, either because of trying or guessing or because of a user’s carelessness. Some possibilities of securing the exchange even more are introduced below:
- Password protected archive
- Encrypting file(s) with TrueCrypt-Containers
Furthermore, every user has the possibility of deleting the files immediately after downloading them.
The log-in via my university is not possible. What can I do?
Please contact the IT department of your university that is responsible for the SSO system (identity provider, usually Shibboleth). Your university must use an identity provider that is registered in the DFN Advanced Federation and activate the attributes that are listed on the DFN AAI website.
The application Gigamove is an easy option to exchange large files that for their size cannot be sent as e-mail attachment. The maximum size of an e-mail attachment depends on the provider and usually is between 5–40MB (RWTH: 25MB).
Registered users can initiate the exchange from two directions. Either the user provides a file for someone by uploading it and having the application generate a download link or the user requests a file. To do this another link is generated directing the recipient to an upload form for the file. Additionally, the web application provides a form for sending the generated links as e-mail notification to one or several recipients. The contact person with whom the files are exchanged does not have to be a member of RWTH Aachen. This for examples facilitates the reception of installation software (e.g. updates) from a support contact or a business partner, or it enables the user to send files (e.g. log files) required by an employee of a support contact.
Every member of RWTH Aachen can by default keep file up to a total size of 10 GB on the server. For technical reasons, most browsers restrict upload to files smaller than 2 GB (exception: Opera). Values can differ for other users of the DFN federation, depending on the arrangements made with the home institution.
With the Gigamove project we attempt to avoid the effort involved in other procedures for the solution of similar problems. You do not have to manage a FTP server or install client software for the exchange via other protocols, as for example CIFS. There are no liability issues / the liability question is settled because the user is always known to the provider of the service.
The protection of the data exchange depends on whether the ID, for example of the download link, is communicated confidentially and remains secret.
As the application is available for all members of the DFN association, you will first have to select your home institution and then log in using the respective access data.
Members of RWTH Aachen can log in using their username (format: ab123456) and the password for RWTH Single Sign-On account.
In your profile data you have the option of choosing between two different kinds of notifications. You can receive notification as soon as a file you provided was downloaded (E-Mail if provided file was downloaded) and you can receive notifications as soon as a link for requesting a file has been used and the file was uploaded to your directory (E-Mail if requested file was uploaded). By default the application uses the e-mail address stored in the TIM system. You can change it at any time in your profile data.
Furthermore, you can send an e-mail containing the upload link for a requested file or the download link for a provided file from the application. After confirming the form you can open a link to a second form with a suggestion for an e-mail subject and a message that you can edit according to your requirements.
Every uploaded file will be checked for viruses. The scan is conducted in the background. You can check the scan’s status in the details of the uploaded file. If a virus is detected you will be informed immediately via e-mail and the file will be deleted by the system. For a clearer view the links to infected files are listed separately in the overview and have to be deleted by you. By these measures, the university intends to increase the reliability of the application and protect the university network from the spread of viruses. Moreover, Gigamove already offers a higher security level than other procedures as for example the exchange of USB-sticks, which can even spread viruses, if the exchanged file is not infected. Gigamove is more secure because Autoexec and other, potentially dangerous features are not involved.