Using graphical S3 clients

If you prefer to manage objects using drag-and-drop rather than the command line, you can use graphical S3 clients. This page explains how to set up Cyberduck (Windows/macOS) and WinSCP (Windows).

Example values: Endpoint s3.internet1.de, Port 443.

Cyberduck

1. Install and launch Cyberduck.
2. Open New Connection and select Amazon S3 as the protocol.
3. Fill in the fields:
   • Server: s3.internet1.de
   • Port: 443
   • Access Key ID: Your Access Key
   • Secret Access Key: Your Secret Key
4. Connect – the list of buckets will appear.

Working with Cyberduck:

• Upload/Download: Drag and drop files into or out of the bucket; Cyberduck automatically transfers large files as multipart uploads.
• New bucket: Right-click in the root directory → New folder (a bucket is created at the top level).
• Object info: Right-click → Info displays metadata and permissions (ACL) and allows you to generate signed URLs (under the Share tab).
• Synchronise: The File → Synchronise menu synchronises local folders with a prefix.

Tipp

Create a bookmark for recurring links (Bookmarks → New Bookmark); then, in future, a double-click will suffice.

WinSCP

1. Install and launch WinSCP.
2. In the login dialogue, select New Connection:
   • Transfer protocol: Amazon S3
   • Server address: s3.internet1.de
   • Port number: 443
   • Access key ID / Secret access key: Enter your login details
3. Optionally, Save, then Log in.

Working with WinSCP:

• Two-pane view: local on the left, storage on the right; transfer via drag-and-drop or F5.
• Create a bucket: in the root directory, use F7 (create directory).
• Permissions: Right-click on an object → Properties displays and modifies the ACL (e.g. public read access).
• Directory synchronisation: Commands → Synchronise directories.

Error messages during set-up

Symptom	Cause	Solution
403 Forbidden when connecting	Access/secret key incorrect or deleted	Check access details; if necessary, create a new one
Bucket list empty	Key belongs to a different project	Use the correct key pair
Certificate warning	Incorrect endpoint entered	Enter the server address exactly as shown in s3.internet1.de (without the https:// prefix in the server field)
Upload of large files aborts	Unstable connection	Restart – multipart upload may resume from where it left off; if necessary, increase the part size in the client

Related topics

• Add and remove files
• Configure CORS
• Create a bucket