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2018-09-04 10:13:29 +00:00
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# FTP
There is a small internal file system accessible with each Pycom device, called `/flash`. This is stored within the external serial flash memory. If a microSD card is also connected and mounted, it will be available as well. When the device starts up, it will always boot from the `boot.py` located in the `/flash` file system.
The file system is accessible via the native FTP server running on each Pycom device. Open an FTP client and connect to:
* url: `ftp://192.168.4.1`
* username: `micro`
* password: `python`
See [network.server](../../firmware-and-api-reference/pycom/network/server.md) for information on how to change the defaults. The recommended clients are:
* macOS/Linux: default FTP client
* Windows: Filezilla and FireFTP
For example, from a macOS/Linux terminal:
```bash
$ ftp 192.168.4.1
```
The FTP server doesnt support active mode, only passive mode. Therefore, if using the native unix FTP client, immediately after logging in, run the following command:
```bash
ftp> passive
```
The FTP server only supports one connection at a time. If using other FTP clients, please check their documentation for how to limit the maximum allowed connections to one at a time.
## FileZilla
If using FileZilla, it's important to configure the settings correctly.
Do not use the quick connect button. Instead, open the site manager and create a new configuration. Within the `General` tab, ensure that encryption is set to: `Only use plain FTP (insecure)`.
![](../../.gitbook/assets/filezilla-settings-1.png)
In the `Transfer Settings` tab, limit the max number of connections to one. Other FTP clients may behave in a similar ways; visit their documentation for more specific information.
![](../../.gitbook/assets/filezilla-settings-2.png)