Working with your website files via FTP is no longer sufficient.The classic protocol doesn't encrypt anything, and anyone who intercepts the connection could see usernames, passwords, and files in plain text. Luckily, we have more secure alternatives like SFTP and FTPS, and powerful clients like FileZilla that make life easier even for beginners.
Whether you manage a WordPress site, shared hosting, a VPS, or simply a remote server, master the Secure FTP/SFTP transfers with FileZilla It's practically mandatory. With a few adjustments and a good understanding of what each protocol does, you can upload, download, and edit files with complete peace of mind, greatly reducing the risk of data leaks or unauthorized access.
What are FTP, FTPS, and SFTP, and how do they differ?
Before touching anything in FileZilla, it's a good idea to clarify some concepts.Because everything is usually lumped together: FTP, FTPS, FTPES, SFTP… and no, they are not the same at all.
FTP (File Transfer Protocol) is the "old-fashioned" protocol to upload and download files between your computer and a server. It uses two channels (one for commands and one for data), but It doesn't encode anything at all.So, usernames, passwords, and files travel in plain text. This might be acceptable for an internal network and unimportant data, but on the internet, it's a sieve.
FTPS and FTPES are secure extensions of FTP that add an SSL/TLS layer. In the case of FTPES (Explicit FTP over TLS): The connection starts as normal FTP, and then the client "elevates" it to encryption using TLS. This is the option offered by many shared hosting providers that want to maintain FTP compatibility but with encryption.
SFTP (SSH File Transfer Protocol) is another storyIt's not a patched FTP, but a different protocol that travels within SSH. It encrypts both commands and dataIt protects credentials, guarantees integrity, and is ultimately the safest of the three options for transferring sensitive information, backups, or client projects.
In practice, the choice between FTP, FTPES, and SFTP depends on the environment and needs.:
- FTP: useful only in internal environments without security requirements or for public content where no sensitive credentials are at stake.
- FTPES/FTPS: widely used in regulated environments (financial, healthcare, B2B) where encrypted connections are required but the use of classic FTP infrastructure is desired.
- SFTP: preferred by system administrators, developers, and security professionals when the data is critical and you are already working with SSH.
Why you should use SFTP whenever possible
The letter “S” in SFTP comes from “Secure”And it's not just for show. Using SFTP instead of standard FTP makes all the difference between leaving your credentials floating around in plain text or keeping them end-to-end encrypted.
When someone intercepts the network traffic of an unencrypted FTP connectionYou can see the username, password, and file contents with minimal effort. If those files contain... personal data, sensitive settings, or database copiesThe problem can be quite serious.
SFTP, being encapsulated over SSH, encrypts the entire sessionAuthentication, commands (list, delete, rename, etc.), and data transfer. In addition to confidentiality, contributes integrity (data is not modified along the way without you noticing) and a robust authentication system, either with a password or public keys.
Many hosting providers recommend or even require the use of SFTP To access the web space. In our own control panels or in managed WordPress solutions, it's very common for them to directly provide you with the SFTP or FTPS connection details, and for simple FTP not to be available.
If you work with WordPress or other CMSUsing SFTP as your primary channel makes it easier to implement a robust backup, deployment, and restore strategy without compromising security. In fact, many WordPress hardening guides strongly recommend disabling plain FTP and always using SFTP.
FileZilla: the ideal client for FTP, FTPS and SFTP
FileZilla is one of the most popular clients for managing file transfers between your computer and a remote server. It's open source, free, and available for Windows, macOS, and Linux, so it covers virtually any scenario.
Its main advantage for most users is that it is very easy to useThe browser-like interface, with the local panel on the left and the remote panel on the right, makes dragging and dropping files immediate, without needing to understand too much of the underlying protocol.
FileZilla supports several protocols: FTP, FTPES/FTPS, and SFTPThis means you can connect to almost any hosting: from an old server that only allows FTP, to a Linux VPS where you only have SSH and SFTP access.
Among its most useful features are:
- Site manager to save connection profiles (host, port, protocol, user, etc.) organized in folders.
- Resumption of transfers and management of upload/download queues with multiple simultaneous connections.
- Remote file editing (opens, modifies and re-uploads without you having to worry).
- Detailed log of what happens in the connection to easily detect errors or permission problems.
It is true that FileZilla has received occasional criticism for adware in some installersBut these days, by downloading from the official website and carefully following the wizard, you shouldn't have any problems. In return, you still get a robust client, frequently updated and compatible with virtually everything.
How to install FileZilla Client step by step
Installing FileZilla is straightforward, but there are a couple of details worth noting. to get everything ready the first time and avoid surprises with unnecessary components.
The basic installation steps would be these:
- Download Install the installer from the official FileZilla Client website, choosing the appropriate version for your operating system (Windows, Linux, macOS).
- Run the installer and decide whether you want it for all users on the team or just the current user. In shared environments, it's usually more convenient to install it for everyone.
- Select componentsIt is normal to leave the default options as they include everything necessary to work without complications.
- Select the option to create an icon on the desktop If you're going to use FileZilla often, you'll want to have it readily available.
After installation, the first time you open FileZilla, a welcome window will appear. with links to help and documentation. If this is your first time using an FTP/SFTP client, it's a good idea to take a look at them, although the key features are summarized below.
FileZilla interface: what each window is
The FileZilla interface can be understood as a set of six main areaseach with its role in connecting and managing files:
Window 1 (message log)At the top, you'll see a log with all the commands and responses between your client and the server. This will display connection messages, authentication errors, permission errors, and any issues that may arise during transfers.
Window 2 (local directory tree): top left panel, where your computer's folders are displayed in a tree format, like a file explorer. Represent your local system, from where you will drag files to the server.
Window 3 (remote directory tree)Top right panel: This displays the folder structure of the server you are connecting to (FTP, FTPES, or SFTP). Here you can see what's on your hosting or VPS, along with any permission limitations.
Window 4 (local file list)The lower left panel displays the files and subfolders of the path selected in window 2. This is where you will choose exactly what you want to upload.
Window 5 (remote file list): lower right panel, lists the contents of the remote folder selected in window 3. It may appear empty if you do not have read permissions on that path.
Window 6 (transfer queue): at the bottom, with tabs for transfers in progress, failed and completed. Here you can see in real time what's going up or down, at what speed and with what result.
Above these windows, FileZilla includes a quick connect bar. with fields for Server, User, Password and Port, and the "Quick Connect" button, in addition to the top menus with all the advanced options.
Configure a secure, fast SFTP connection in FileZilla
For a one-off connection, without saving the profile, the easiest way is to use the quick connect bar.but clearly indicating that you want SFTP and not regular FTP.
The basic information you need to connect via SFTP is always four:
- Host or server: This can be a domain name (for example, ftp.your-domain.com) or the server's IP address.
- User: the SFTP account that your provider gave you (for VPS it is usually root or another SSH user).
- Password: the one that corresponds to that user or, if you use keys, the associated passphrase.
- Port: normally 22 in standard SFTP, although in many cases an alternative port is used.
In the quick connect bar, the important trick for SFTP is to write the protocol before the host.. For example: uterine
- sftp://192.168.1.100
- sftp://yourdomain.com
If you only enter the IP address or domain without the sftp:// prefixFileZilla will try to use FTP or FTPES by default, which is not what you want if you are looking for a secure connection over SSH.
Once you have filled in the server, username, password and port 22 (or the SSH port configured on your VPS or hosting)Simply click on “Quick Connect”. If the information is correct, FileZilla will open the SFTP session and in a few seconds you will see your local directories on the left and the server's directories on the right.
Connect using SFTP with FileZilla Site Manager
If you're going to connect to the same server often, it's convenient to save the settings in the Site Manager.instead of writing everything out every time.
Access is via the “File > Site Manager” menu (or with the shortcuts Ctrl+S on Windows and Cmd+S on Mac). From there you can create folders and sites to organize your different servers.
When you create a "New Site", several settings tabs open.:
- General tab: is the most important.
- DanceChoose “SFTP – SSH File Transfer Protocol” if you want a secure connection over SSH.
- Host and Port: Enter the server name or IP address and the SFTP port (usually 22).
- Encryption / Access Mode: For SFTP, select the access mode (normal, ask for password, use keys, etc.).
- User and password: Fill in the credentials or leave it to ask for them on each connection if you prefer.
- Advanced Tab: allows you to define the server type (the best option is "Automatically detect") and set default directories, both local and remote, so that when you connect, the folders you use most often are always opened.
- Transfer Options tabHere you can limit the number of simultaneous connections to that specific server. It's usually a good idea to have several transfers running in parallel. (for example, 5) to make good use of the bandwidth, unless your hosting severely limits connections.
- Character Set tabThis setting is used to change the server's character encoding. In most cases, it's not necessary to change it.
Once the site is saved, simply open the Site Manager, select it, and click "Connect".FileZilla will remember the protocol, host, port, and user, and you'll forget about looking at notes every time.
Accepting certificates and security notices in FileZilla
In both SFTP and FTPS/FTPES, it's normal that the first time you connect FileZilla displays an alert warning that the server certificate is unknown.
In that window you'll see details such as the domain, the certificate fingerprint, and who issued it.It is important to check that the The certificate domain matches the host you are connecting to. (or the one your supplier has indicated).
If everything looks good and you trust the server, you can select the option "Always trust this certificate in future sessions". and accept. From that moment on, FileZilla will no longer display that warning for that server/certificate combination.
If you decide not to accept the certificateIf the secure connection is not established, FileZilla will display a connection error. In that case, check that you are not connecting to the wrong host, or if you are unsure, consult your hosting provider before continuing.
How to upload and download files using SFTP with FileZilla
Once the connection is established, working with files is practically the same as working on your own computer.Except you have two panels facing each other: local and remote.
To upload a file to the remote serverThe typical process would be:
- In the left panel (local), navigate to the folder on your computer where the file is located.
- On the right (remote) panel, enter the destination folder of your web space (for example, public_html, httpdocs, or your project directory).
- Drag the file from the left panel to the right panel Or right-click on the local file and choose “Upload”.
The download works in exactly the opposite way.You select the files or folders in the right panel (server) and drag or download them to the left panel (your computer). It's a convenient way to make local copies of themes, plugins, or full backups.
While files are being transferred, the queue window at the bottom will show you the progress. (percentage, size, speed, and status). If something goes wrong, you'll see the file in the failed transfers tab so you can retry it later.
This applies whether you use SFTP, FTPES, or FTPBut with SFTP you'll also have the peace of mind that all those transfers are encrypted over SSH.
Edit files directly on the server with FileZilla
Another very useful feature of FileZilla is the direct editing of remote files.without you having to download them, modify them, and upload them again manually.
To edit a file on the remote server enough with:
- Search for the file in the right panel (remote), for example a wp-config.php or functions.php of your topic.
- Right-click on it and select the “View/Edit” option.
- FileZilla will open it with the text editor configured on your system. (it could be Notepad, VS Code, etc.).
- You make the changes, save the file in the editor, and close it.
When it detects that the local file has changed, FileZilla will ask if you want to upload the modified version to the server.By saying yes, the new file is uploaded and the old one is replaced, thus maintaining a very agile workflow.
This way of working is very practical on WordPress sites For quick adjustments to the code, although it's always recommended to make a backup before touching system or theme files, in case you need to revert.
Using SFTP and FileZilla on WordPress and shared hosting
A pattern is repeated in WordPress environments and shared hosting.Most providers provide specific data for access via secure FTP (either SFTP or FTPS) from clients such as FileZilla.
Normally, from your hosting control panel (cPanel, WePanel, your own panel, etc.) you can:
- Create and manage FTP/SFTP accounts associated with each domain or subdomain.
- Consult the Exact host, port, username, and password information for use with FileZilla.
- Check if the provider prefers SFTP (over SSH) or FTPS/FTPES (over TLS) as the primary secure connection.
In many Linux hosting providers, only the main user has SFTP access to the entire file system.While additional FTP accounts are limited to certain directories. This is important if you need to access paths outside of public_html to, for example, manage logs or backups.
When FileZilla displays certificate warnings or connection problemsAlways check your supplier's documentation; it may, for example, use a non-standard port for SFTP or that only allow FTPS instead of SFTP.
In the case of a Linux VPS, the SFTP connection is usually made with the root user or a user with SSH accessFor it to work, The SSH service must be enabled on the VPS. and know the port it uses (22 or an alternative one you have configured).
Advanced options and important menus in FileZilla
Beyond the basic connection, FileZilla has a fairly extensive menu of options. which allows you to adjust behavior, performance, and privacy.
Among the most useful sections you will find:
Network Configuration WizardThis tool helps configure routers and firewalls so that FTP/SFTP connections work correctly. It also performs a network test to verify that everything is in order.
Clean up private information: It is used to delete the history of quick connections, the transfer list, and other data that may be stored. It's useful if you share equipment. or if you don't want to leave a trace of which servers you use.
Connection optionsYou can adjust waiting times, the number of retries before considering a connection failed, and how to handle unexpected disconnections.
Transfer optionsThey allow you to limit the number of simultaneous transfers and, if needed, cap upload and download speeds to avoid overloading your connection.
View MenuHere you can activate or deactivate different parts of the interface (panels, toolbars, etc.), in case you want to make FileZilla cleaner or show additional information.
Menus: Transfer, Server, Bookmarks and HelpThey offer quick access to pause transfers, reconnect, search for files on the server, save favorite folders, or access documentation and report potential errors to the developers.
Common FileZilla Errors and How to Fix Them
When working with FileZilla on a daily basis, it's normal to encounter some recurring errors., almost always related to credentials, network configuration or file permissions.
One of the most frequent errors is not being able to connect despite entering the server and usernameIn most cases, the solution involves Check the data in your hosting control panel o Configure FTP on WindowsExact FTP/SFTP host, username, and password. Copying and pasting these from the control panel usually prevents silly typing errors.
Everything seems correct but FileZilla still won't connectThe password is likely incorrect or has changed. The most practical thing to do is reset password from the provider's panel and try again with the new key.
Another very typical message is that "the waiting time has been exceeded after X seconds of inactivity"The source of the problem could be the hosting itself, your router, the firewall, or even your internet service provider.
Faced with problems of this type, you can try several things: change networks (for example, share mobile data), use a VPN to bypass intermediate filters, or adjust the waiting times and connection mode (active/passive) in FileZilla's advanced options.
Permission problems are also commonSometimes you can't delete, edit, or list a specific folder because the SFTP user you're using doesn't have sufficient permissions. In that case, check the user settings on your hosting provider or contact support so they can adjust permissions or tell you the correct path.
Advantages and disadvantages of FileZilla compared to other alternatives
Although FileZilla is considered by many to be the best free FTP/SFTP clientIt is not the only option on the market, nor is it necessarily the ideal one for all cases.
Among FileZilla's strengths are:
- Gentle learning curveThe interface is simple, similar to a file explorer, ideal for beginner users.
- Supports heavy transfers without significantly impacting speed, managing long queues quite smoothly.
- Frequent updates that correct errors and incorporate security and compatibility improvements.
- Compatibility with FTP, FTPES, FTPS and SFTPwhich makes it work with virtually any server.
On the less favorable side, the main historical criticism has been the issue of adware in some installers.However, as we mentioned, downloading from the official source and carefully reading the wizard minimizes the risk.
If you still prefer to explore alternatives, there are several quite interesting clients.:
- WinSCP (Windows, open source): Combines FTP and SFTP, and includes SCP support. It offers directory synchronization, copying, moving and deleting files, and two possible interfaces: one similar to Windows Explorer and another like Norton Commander.
- CoreFTP (Windows, free): Supports SFTP, SSL, TLS, FTPS and IDN, with advanced browsing and site-to-site transfer features. It's quick and easy to use.
- SmartFTP (Windows, paid after a 30-day trial): Compatible with FTP, FTPS, SFTP, and services such as WebDAV, Amazon S3, Google Drive, and OneDrive. It allows interconnection between servers (FXP) to move data between them directly.
- FreeFTP: a free option focused on simplicity that allows the use of FTPES or SFTP, with special emphasis on communication encryption.
- ClassicFTP: a very intuitive client that facilitates basic transfers and verifies copies between local and remote folders.
Even with all those options, for many scenarios FileZilla and WinSCP remain the top choicesespecially for its combination of simplicity, performance and zero cost, as well as offering robust support for secure SSH-based protocols.
Mastering secure FTP/SFTP transfers with FileZilla gives you a distinct advantage When managing websites, applications, and servers: you reduce security risks, automate tasks, and work with your files almost as if they were local. Opting for SFTP or FTPS instead of plain FTP, taking advantage of features like the Site Manager, remote editing, and simultaneous transfers, and understanding the most common errors will allow you to work on your projects much more smoothly and, above all, much more securely.
