Several storage backends are supported: local filesystem, encrypted local filesystem, S3 (compatible) Object Storage, Google Cloud Storage, Azure Blob Storage, SFTP.
- Partial authentication. You can configure multi-step authentication requiring, for example, the user password after successful public key authentication.
- Per user and per directory permission management: list directory contents, upload, overwrite, download, delete, rename, create directories, create symlinks, change owner/group and mode, change access and modification times.
- Per user files/folders ownership mapping: you can map all the users to the system account that runs SFTPGo (all platforms are supported) or you can run SFTPGo as root user and map each user or group of users to a different system account (\*NIX only).
- Configurable custom commands and/or HTTP notifications on file upload, download, pre-delete, delete, rename, on SSH commands and on user add, update and delete.
- Support for serving local filesystem, encrypted local filesystem, S3 Compatible Object Storage, Google Cloud Storage, Azure Blob Storage or other SFTP accounts over SFTP/SCP/FTP/WebDAV.
- Support for HAProxy PROXY protocol: you can proxy and/or load balance the SFTP/SCP/FTP/WebDAV service without losing the information about the client's address.
- [REST API](./docs/rest-api.md) for users and folders management, backup, restore and real time reports of the active connections with possibility of forcibly closing a connection.
- [Web based administration interface](./docs/web-admin.md) to easily manage users, folders and connections.
SFTPGo is developed and tested on Linux. After each commit, the code is automatically built and tested on Linux, macOS and Windows using a [GitHub Action](./.github/workflows/development.yml). The test cases are regularly manually executed and passed on FreeBSD. Other *BSD variants should work too.
- [sftpgo](https://aur.archlinux.org/packages/sftpgo/). This package follows stable releases. It requires `git`, `gcc` and `go` to build.
- [sftpgo-bin](https://aur.archlinux.org/packages/sftpgo-bin/). This package follows stable releases downloading the prebuilt linux binary from GitHub. It does not require `git`, `gcc` and `go` to build.
- [sftpgo-git](https://aur.archlinux.org/packages/sftpgo-git/). This package builds and installs the latest git master. It requires `git`, `gcc` and `go` to build.
You can easily test new features selecting a commit from the [Actions](https://github.com/drakkan/sftpgo/actions) page and downloading the matching build artifacts for Linux, macOS or Windows. GitHub stores artifacts for 90 days.
For PostgreSQL and MySQL providers, you need to create the configured database. For SQLite, the configured database will be automatically created at startup. Memory and bolt data providers do not require an initialization but they could require an update to the existing data after upgrading SFTPGo.
SFTPGo will attempt to automatically detect if the data provider is initialized/updated and if not, will attempt to initialize/ update it on startup as needed.
If for some reason you want to downgrade SFTPGo, you may need to downgrade your data provider schema and data as well. You can use the `revertprovider` command for this task.
So, if you plan to downgrade from git master to 1.2.x, you can prepare your data provider executing the following command from the configuration directory:
```shell
sftpgo revertprovider --to-version 4
```
Take a look at the CLI usage to learn how to specify a different configuration file:
```bash
sftpgo revertprovider --help
```
The `revertprovider` command is not supported for the memory provider.
After starting SFTPGo you can manage users and folders using:
- the [web based administration interface](./docs/web-admin.md)
- the [REST API](./docs/rest-api.md)
To support embedded data providers like `bolt` and `SQLite` we can't have a CLI that directly write users and folders to the data provider, we always have to use the REST API.
Custom authentication methods can easily be added. SFTPGo supports external authentication modules, and writing a new backend can be as simple as a few lines of shell script. More information can be found [here](./docs/external-auth.md).
A user can be created or modified by an external program just before the login. More information about this can be found [here](./docs/dynamic-user-mod.md).
SFTPGo allows to configure custom commands and/or HTTP notifications on file upload, download, delete, rename, on SSH commands and on user add, update and delete.
You can get notified as soon as a new connection is established using the [Post-connect hook](./docs/post-connect-hook.md) and after each login using the [Post-login hook](./docs/post-login-hook.md).
Each user can be mapped to the whole bucket or to a bucket virtual folder. This way, the mapped bucket/virtual folder is exposed over SFTP/SCP/FTP/WebDAV. More information about S3 integration can be found [here](./docs/s3.md).
Each user can be mapped with a Google Cloud Storage bucket or a bucket virtual folder. This way, the mapped bucket/virtual folder is exposed over SFTP/SCP/FTP/WebDAV. More information about Google Cloud Storage integration can be found [here](./docs/google-cloud-storage.md).
Each user can be mapped with an Azure Blob Storage container or a container virtual folder. This way, the mapped container/virtual folder is exposed over SFTP/SCP/FTP/WebDAV. More information about Azure Blob Storage integration can be found [here](./docs/azure-blob-storage.md).
Anyway, some backends require a pay per use account (or they offer free account for a limited time period only). To be able to add support for such backends or to review pull requests, please provide a test account. The test account must be available for enough time to be able to maintain the backend and do basic tests before each new release.
The [connection failed logs](./docs/logs.md) can be used for integration in tools such as [Fail2ban](http://www.fail2ban.org/). Example of [jails](./fail2ban/jails) and [filters](./fail2ban/filters) working with `systemd`/`journald` are available in fail2ban directory.
