# Difference Between Ftp and Sftp Author: Nex Virox Team (Editorial Team) Reviewed by: Varshal Nirbhavane Published: 2026-09-06 Last updated: 2026-09-06 Canonical: https://nexvirox.com/difference-between/difference-between-ftp-and-sftp/ **Quick answer:** The main difference between Ftp and Sftp is that Ftp lacks encryption, while Sftp provides secure, encrypted file transfers. Ftp is a standard protocol for transferring files over a network, while Sftp is a secure version that uses SSH to protect data during transmission.

Difference Between Ftp and Sftp: Comparison Table

Aspect	Ftp	Sftp
Definition	File Transfer Protocol moves files between a client and a server over a network.	SSH File Transfer Protocol securely transfers files inside an encrypted SSH connection.
Purpose	Transfers files in bulk across networks using a straightforward, long-established standard.	Transfers files securely while also offering remote file management over an encrypted channel.
Core Mechanism	Uses separate control and data channels on ports 21 and 20.	Uses a single multiplexed channel over SSH on port 22.
Encryption	Sends data and credentials in plaintext, readable by anyone intercepting traffic.	Encrypts all commands, credentials, and file data using SSH cryptographic protocols.
Authentication	Relies on plaintext username and password, with no built-in key support.	Supports password plus SSH keys, certificates, and two-factor authentication methods.
Data Transfer Mode	Operates in active or passive modes, requiring separate connection handling.	Operates in a single mode, sending everything through one persistent SSH connection.
Port Usage	Uses port 21 for control and dynamic high ports for data.	Uses only port 22 for both control and data transfer.
Firewall Handling	Needs multiple open ports, often requiring complex firewall and NAT rules.	Needs only one open port, simplifying firewall and NAT configuration.
Transfer Speed	Transfers raw data without encryption overhead, often achieving higher throughput.	Encrypts every packet, adding CPU overhead that can reduce raw transfer speed.
Protocol Type	Belongs to the FTP family, standardized under RFC 959.	Belongs to the SSH family, standardized under RFC 4253 and related documents.
Packet Structure	Uses ASCII commands and separate binary data streams.	Uses binary packets with length, type, and data fields inside SSH messages.
Header Overhead	Adds minimal protocol headers, keeping bandwidth usage relatively low.	Adds SSH packet headers plus MAC authentication, increasing per-packet overhead.
Integrity Checking	Provides no built-in checksum to verify file integrity after transfer.	Verifies message authentication codes to detect corruption or tampering.
Security Level	Offers no native security, making data vulnerable to eavesdropping and theft.	Offers strong security with encryption, hashing, and host key verification.
Credential Safety	Exposes passwords in plaintext, allowing capture via packet sniffing tools.	Protects passwords through encryption, preventing credential interception.
Directory Listing	Lists directories using plaintext commands like LIST and NLST.	Lists directories using encrypted SSH_FXP_READDIR requests.
File Management	Supports basic operations like upload, download, delete, and rename.	Supports full remote management including chmod, symlink, and stat operations.
Resume Support	Supports resuming interrupted transfers using the REST command.	Supports resuming transfers but depends on client and server implementation.
Batch Processing	Automates transfers easily with command-line FTP scripts.	Automates transfers using batch mode with sftp commands or non-interactive scripts.
Server Software	Runs on standard daemons like vsftpd, ProFTPD, and FileZilla Server.	Runs on OpenSSH, Bitvise, and other SSH server implementations.
Client Support	Supported by nearly every operating system and browser natively.	Supported by most modern OSes but requires SSH-capable client software.
NAT Compatibility	Breaks frequently behind NAT due to dynamic data port negotiation.	Works reliably behind NAT because all traffic uses one fixed port.
Proxy Support	Supports HTTP and SOCKS proxies but often requires special configuration.	Supports proxies through SSH tunneling, which can complicate setup.
Typical Users	Used by legacy systems, public file mirrors, and non-sensitive data sharing.	Used by system administrators, developers, and enterprises handling sensitive data.
Common Use Case	Used for anonymous public downloads from university and open-source mirrors.	Used for secure server administration, code deployment, and confidential file exchange.
Compliance Fit	Fails to meet HIPAA, PCI-DSS, or GDPR requirements due to plaintext data.	Helps meet HIPAA, PCI-DSS, and GDPR mandates by encrypting data in transit.
Performance Cost	Consumes minimal CPU because no encryption or compression is applied.	Consumes CPU cycles for encryption, hashing, and optional compression.
Latency Impact	Adds negligible latency per packet since data flows without extra processing.	Adds measurable latency from cryptographic handshakes and per-packet processing.
Main Limitation	Transmits everything insecurely, including passwords and sensitive file contents.	Offers slower throughput and lacks built-in bandwidth throttling controls.
Best-Fit Scenario	Best for non-sensitive, public file distribution where speed matters most.	Best for secure, authenticated file transfer in production and regulated environments.

What Is Ftp?

Ftp, or File Transfer Protocol, is a standard network protocol used to transfer files between a client and a server on a computer network. It was designed to move files reliably across different systems, and it has existed since the early days of the internet. Ftp remains a common tool for uploading website files.

Definition of Ftp

Ftp is an application-layer protocol that operates over TCP/IP, typically using port 21 for control commands and port 20 for data transfer. It enables authenticated users to upload, download, rename, delete, and list files on a remote host. Standard Ftp transmits all data and credentials in plaintext, making it inherently unencrypted and vulnerable to interception.

Key Characteristics of Ftp

Characteristic	What It Means in Practice
Plaintext transmission	Usernames, passwords, and file data travel unencrypted, so anyone on the network can read them.
Two-channel operation	Uses a control connection for commands and a separate data connection for actual file content.
Active and passive modes	Active mode opens ports from the server, while passive mode lets the client initiate both connections to bypass firewalls.
Platform independence	Works across Windows, Linux, macOS, and mainframes because it relies on standard TCP/IP ports.
Authentication support	Requires a username and password, though anonymous access is also available for public file repositories.
No built-in integrity check	Does not verify file integrity during transfer, so corrupted files can arrive without any automatic warning.
Resume capability	Supports restarting interrupted transfers from the point of failure, saving time on large files.
Directory navigation	Allows listing, creating, and changing directories on the remote host using standard commands.
Batch processing	Supports scripting with command-line tools, enabling automated scheduled transfers without manual interaction.
Firewall complications	Active mode frequently breaks behind NAT or firewalls because the server initiates a connection back to the client.

Common Examples of Ftp

FileZilla – a free, open-source desktop client that supports Ftp, FTPS, and SFTP for managing remote files.
cPanel File Manager – a web-based tool that provides Ftp access for uploading and editing website files directly.
Windows Command Prompt – includes a built-in ftp command-line client for scripted and manual file transfers.
ProFTPD – a widely deployed open-source Ftp server used on Unix-like systems for hosting file repositories.
vsftpd – a secure, fast Ftp server for Linux distributions, known for its stability and small footprint.
Adobe Dreamweaver – a web development tool that historically used Ftp to publish site files to hosting servers.
Core FTP LE – a lightweight Windows client offering basic Ftp transfers and site-to-site file management.
Firefox Ftp Add-ons – legacy browser extensions that allowed direct Ftp browsing and downloads from web browsers.
Internet Archive Uploads – many public archives still accept file submissions via Ftp for bulk media ingestion.
Embedded Device Firmware – routers and network printers often expose Ftp for uploading configuration or firmware files.

Advantages and Limitations of Ftp

Advantages	Limitations
Universal compatibility across every operating system and network stack makes Ftp a dependable fallback.	Sends passwords and data in plaintext, so credentials are easily captured on unsecured networks.
Extremely lightweight protocol with low overhead, making it fast for transferring large files.	No native encryption means it violates most modern security policies and compliance standards.
Supports resuming interrupted downloads, which is valuable for unstable connections.	Active mode frequently fails through firewalls and NAT routers, requiring passive mode configuration.
Simple command set that is easy to learn and script for automated batch file transfers.	No built-in file integrity verification, so silent data corruption goes unnoticed.
Runs on virtually any device, from mainframes to embedded hardware, without special requirements.	Offers no protection against man-in-the-middle attacks or session hijacking.
Allows anonymous access for public file distribution without requiring user accounts.	Anonymous access is frequently misconfigured, exposing sensitive directories to the public.
Mature protocol with decades of debugging, making it highly stable in production environments.	Passwords are often reused across systems, so a single Ftp leak compromises other accounts.
Supports both binary and ASCII transfer modes for different file types.	ASCII mode can corrupt binary files if the client and server disagree on line-ending conventions.
Widely documented with abundant troubleshooting resources and community support.	Modern browsers have dropped Ftp support, reducing its accessibility for casual users.
Works well with virtual hosting and multi-user setups when paired with directory permissions.	No built-in rate limiting, so a single user can saturate bandwidth and starve other connections.

What Is Sftp?

Sftp, or SSH File Transfer Protocol, is a secure file transfer method that runs entirely over the SSH protocol. It encrypts both the commands and the data, protecting files during transfer. Sftp exists to replace insecure legacy protocols like Ftp with authenticated, encrypted sessions.

Definition of Sftp

Sftp is a network protocol that provides file access, transfer, and management over a secure, encrypted SSH data stream. It uses the SSH port 22 to authenticate users and encrypt all traffic, ensuring confidentiality and integrity. Sftp is functionally distinct from FTPS, which secures standard Ftp using SSL/TLS.

Key Characteristics of Sftp

Characteristic	What It Means in Practice
Full encryption	All commands and file data are encrypted, so credentials and content stay private.
Single connection	Uses one SSH connection on port 22, simplifying firewall and NAT configuration.
Built-in authentication	Supports passwords, public keys, and two-factor methods for secure logins.
File management	Allows renaming, deleting, and changing permissions remotely, not just transferring.
Resume capability	Can resume interrupted transfers from the exact byte where they stopped.
Directory listing	Provides native, structured directory listings without needing a separate data channel.
No FTP fallback	Does not use or require the legacy FTP protocol at any layer.
Port 22 only	Operates exclusively over SSH, avoiding the dynamic data ports of standard Ftp.
Binary-safe	Transfers all file types correctly without ASCII/Binary mode confusion.
Session persistence	Maintains a single stateful connection, reducing overhead for multiple files.

Common Examples of Sftp

OpenSSH – the standard Unix/Linux implementation, bundled with most servers and used daily by sysadmins.
WinSCP – a popular Windows GUI client that makes Sftp accessible to non-technical users.
FileZilla – a cross-platform client supporting Sftp alongside other protocols, widely used in web hosting.
Cyberduck – a Mac and Windows client favoured for cloud storage and server file management.
Amazon S3 Transfer – uses Sftp endpoints for secure enterprise data ingestion into AWS storage.
GitHub – historically supported Sftp for repository publishing, proving its legacy in developer workflows.
cURL – a command-line tool that handles Sftp transfers for scripting and automation tasks.
lftp – a powerful terminal client with advanced mirroring and parallel Sftp transfer features.
Transmit – a polished macOS Sftp client used by designers and developers for site deployment.
Azure SFTP – a managed service enabling Sftp access to Azure Blob Storage without custom servers.

Advantages and Limitations of Sftp

Advantages	Limitations
Encrypts all traffic, protecting credentials and data from interception on untrusted networks.	Slower than plain Ftp due to encryption overhead, especially for very large file batches.
Uses a single port, making it simple to secure with firewalls and NAT devices.	Requires SSH server configuration, which is more complex than setting up a basic Ftp daemon.
Offers strong public-key authentication, eliminating the risk of password brute-force attacks.	Public-key management adds administrative burden for large teams or rotating staff.
Provides built-in file management commands, reducing the need for a separate remote shell.	No built-in compression for transfers, so bandwidth usage can be higher than with other tools.
Works natively on Linux, macOS, and Windows without additional proprietary software.	Not ideal for anonymous public downloads, as it requires an authenticated SSH account.
Resumes interrupted transfers reliably, saving time on flaky or slow connections.	Performance degrades significantly on high-latency links due to SSH's request-response nature.
Integrates seamlessly with existing SSH infrastructure, such as keys and jump hosts.	No native web browser support, so users cannot access files directly via a URL.
Prevents data corruption by handling binary and text files identically without mode switches.	Limited throttling controls compared to dedicated managed file transfer solutions.
Auditable through SSH logs, providing clear records of logins and transfer activity.	Some legacy enterprise systems only support Ftp, forcing protocol conversion or bridges.
Vendor-neutral and standardised, avoiding proprietary lock-in for file exchange.	Offers no built-in scheduling or workflow automation, requiring external scripting tools.

Similarities Between Ftp and Sftp

Shared Aspect	How Ftp and Sftp Are Alike
Core Purpose	Both Ftp and Sftp transfer files between a client computer and a remote server.
Primary Category	Ftp and Sftp both belong to the file transfer protocol family of networking tools.
Client Software	Ftp and Sftp both connect using dedicated client applications like FileZilla or WinSCP.
Network Foundation	Ftp and Sftp both rely on TCP/IP to establish and maintain their network connections.
Remote Access	Ftp and Sftp both allow users to access and manage files stored on distant machines.
File Operations	Ftp and Sftp both support uploading, downloading, deleting, and renaming remote files.
Directory Browsing	Ftp and Sftp both let users navigate and view folder structures on the remote server.
Authentication Method	Ftp and Sftp both require a username and password to authenticate users before access.
Batch Transfers	Ftp and Sftp both support transferring multiple files simultaneously in a single session.
Resume Capability	Ftp and Sftp both can resume interrupted downloads from the point where they stopped.
Command Interface	Ftp and Sftp both offer command-line interfaces for scripted and automated operations.
Port Usage	Ftp and Sftp both use specific TCP ports to listen for incoming client connections.
Cross-Platform Support	Ftp and Sftp both run on Windows, macOS, Linux, and other major operating systems.
Web Integration	Ftp and Sftp both integrate with web hosting workflows for publishing website content.
Server Software	Ftp and Sftp both require server-side daemons configured to accept client requests.
User Permissions	Ftp and Sftp both enforce access controls that restrict users to specific directories.
Logging Activity	Ftp and Sftp both record transfer logs that track file names, times, and user actions.
Error Handling	Ftp and Sftp both return status codes that indicate success or failure of operations.
Passive Mode	Ftp and Sftp both support passive connection modes to work through firewalls easily.
Scripting Support	Ftp and Sftp both enable automation through shell scripts and scheduled batch jobs.
File Permissions	Ftp and Sftp both allow changing remote file permissions to control read and write access.
Data Transfer	Ftp and Sftp both move binary and text files accurately between local and remote systems.
Vendor Neutrality	Ftp and Sftp both work with software from many different vendors without proprietary lock-in.
Administrative Control	Ftp and Sftp both give administrators control over connection limits and bandwidth usage.
Session Management	Ftp and Sftp both maintain a persistent session for multiple commands during one connection.
Configuration Files	Ftp and Sftp both use server configuration files to define user access and settings.
Security Risks	Ftp and Sftp both face risks from brute-force attacks and unauthorized login attempts.
Monitoring Tools	Ftp and Sftp both can be monitored using network analysis tools to track traffic.
Maintenance Needs	Ftp and Sftp both require regular patching and updates to keep servers functioning reliably.
Long-Term Utility	Ftp and Sftp both remain widely used for file exchange despite newer alternatives existing.

Ftp or Sftp: Which Should You Choose?

Choose Sftp for nearly every modern file transfer because it encrypts data in transit. The single deciding variable is security requirement. If your files contain sensitive data, or you transfer over the public internet, Sftp is the only safe option. Ftp remains viable only for non-sensitive files on trusted, isolated networks.

When to Use Ftp

Choose Ftp when speed on a trusted internal network matters more than security. It suits legacy systems, older embedded devices, or printers that lack Sftp support. Ftp also fits low-budget projects where simple setup and minimal overhead are priorities, and where files contain no confidential information.

When to Use Sftp

Choose Sftp when data confidentiality is non-negotiable, such as with customer records, financial data, or credentials. It is mandatory for any transfer over the public internet or through firewalls. Sftp also wins when you need secure authentication and integrity checks to verify files arrive unaltered.

Common Misconceptions About Ftp and Sftp

Common Myth	The Reality
FTP and SFTP are just two names for the same file transfer method.	FTP uses plain text commands on port 21, while SFTP runs over SSH on port 22 with full encryption.
SFTP is simply FTP with a password added on top.	SFTP is a completely different protocol that encrypts both commands and data, unlike FTP which sends them in clear text.
FTP is secure enough for transferring sensitive business files.	FTP transmits usernames, passwords, and file contents unencrypted, making them readable by anyone intercepting network traffic.
SFTP and FTPS are the same secure protocol, just with different names.	SFTP uses SSH for security, while FTPS adds SSL/TLS to standard FTP; they are incompatible and use different ports.
FTP is always faster than SFTP because it has less overhead.	FTP can be faster on trusted networks, but SFTP's encryption overhead is often negligible on modern hardware and connections.
You need to install special software on your computer to use SFTP.	SFTP clients are built into most operating systems, and free tools like FileZilla and WinSCP work on all major platforms.
SFTP only works on Linux or Unix servers, not on Windows.	SFTP works on any platform; Windows Server includes an OpenSSH-based SFTP server, and third-party options like Cerberus exist.
FTP is obsolete and no modern company uses it anymore.	FTP still runs on millions of legacy servers and embedded devices, though most modern businesses now prefer SFTP for security.
SFTP encrypts only the password, leaving the actual file data exposed.	SFTP encrypts the entire session, including all commands, authentication details, and every byte of file data transferred.
FTP works fine over the internet as long as you have a strong password.	Even a strong password is useless with FTP because it travels in plain text and can be captured by network sniffers.
SFTP requires a static IP address and a dedicated server to function.	SFTP works with dynamic IPs and on shared hosting, cloud instances, and even personal computers with proper configuration.
FTP is easier to set up than SFTP, so beginners should always choose it.	SFTP setup is nearly identical to FTP, often requiring just an SSH server, which is enabled by default on most Linux systems.
Using FTP is fine for internal company networks where no outsiders can see traffic.	Internal networks are still vulnerable to malware, rogue employees, and compromised switches that can sniff FTP plaintext traffic.
SFTP is slower because encryption makes every file transfer take twice as long.	SFTP encryption adds negligible delay on modern CPUs, and network latency usually dominates transfer time, not the encryption process.
FTP supports resume of interrupted downloads, but SFTP does not support this feature.	SFTP supports resuming interrupted transfers, though some older clients lack the feature; modern clients like FileZilla handle it well.
SFTP is only for transferring files between servers, not for personal or desktop use.	SFTP is widely used by individuals to back up files, manage websites, and securely share documents from personal computers.
FTP is a protocol from the 1970s, so it cannot handle large modern file sizes.	FTP handles files of any size, limited only by the filesystem and connection stability, not by the protocol's age.
SFTP requires a separate port, like port 990, which is often blocked by firewalls.	SFTP uses standard SSH port 22, which is commonly open for remote administration, making it firewall-friendly in most environments.
FTP and SFTP use the same commands, so scripts written for FTP work with SFTP unchanged.	SFTP has its own command set and syntax; FTP scripts need rewriting to use sftp commands like put, get, and ls differently.
SFTP is a proprietary protocol owned by a single software company.	SFTP is an open standard defined by the IETF in RFC 4253, implemented freely by many vendors including OpenSSH and PuTTY.
FTP is more reliable for automated batch transfers because it never drops connections.	FTP drops connections just as often as SFTP; both require retry logic, but SFTP adds integrity checks that FTP lacks.
SFTP cannot handle multiple simultaneous file transfers, unlike FTP which supports parallel streams.	SFTP supports multiple concurrent transfers, and clients like WinSCP allow parallel sessions to maximize throughput.
FTP is a safe choice for public file sharing because it does not expose user credentials.	FTP exposes usernames and passwords in plain text, so anyone on the network can capture and reuse those credentials for unauthorized access.
SFTP requires a certificate from a certificate authority, just like HTTPS websites do.	SFTP uses SSH keys or passwords for authentication, not SSL certificates; it does not need a CA-signed certificate at all.
FTP is the same as TFTP, so they share the same security weaknesses and features.	FTP supports authentication and directories, while TFTP has no security and only does simple file transfer over UDP port 69.
SFTP is only useful for transferring files, not for managing remote directories or permissions.	SFTP includes commands to list, rename, delete, and change permissions on remote files, making it a full remote file manager.
FTP is a good choice for anonymous public downloads because it is inherently open.	FTP anonymous mode works, but SFTP also supports anonymous access and adds encryption, making it a safer public option.
SFTP cannot work through a web browser, so you always need a separate client program.	Modern browsers like Chrome and Firefox can access SFTP via extensions, and many web-based file managers support SFTP natively.
FTP is better for large backups because it does not waste CPU cycles on encryption.	SFTP's encryption protects backups from tampering and interception, and modern CPUs handle it without noticeable slowdown.
SFTP is just a marketing term for FTP, created to sell expensive security software.	SFTP is a distinct protocol defined in RFC 4253, built on SSH, and implemented in free open-source tools like OpenSSH.

Conclusion

Difference Between Ftp and Sftp comes down to security: FTP transmits data and credentials in plain text, while SFTP encrypts everything through SSH. Choose FTP only for trusted, internal networks with non-sensitive files. Choose SFTP for any internet transfer, especially with confidential data, because encryption protects against interception.

## FAQ ### What is the main difference between FTP and SFTP? The main difference is security: FTP transfers data in plain text, while SFTP encrypts both commands and data using SSH, protecting credentials and files from interception. ### Which is better for secure file transfer, FTP or SFTP? SFTP is better for secure file transfer because it encrypts the entire session, whereas FTP sends passwords and data unencrypted, leaving them vulnerable to eavesdropping attacks. ### Is SFTP the same as FTPS? No, SFTP is not the same as FTPS; SFTP runs over the SSH protocol on port 22, while FTPS adds SSL/TLS encryption to standard FTP, often using port 990. ### Does FTP cost more to use than SFTP? No, FTP does not cost more to use than SFTP; both are free protocols, though SFTP may require additional server configuration and SSH key management for secure access. ### Is it safe to use FTP for transferring sensitive files? No, it is not safe to use FTP for sensitive files because it transmits passwords and data in plain text, allowing anyone on the network to capture them easily. ### Can FTP and SFTP work with the same client software? Yes, FTP and SFTP can work with the same client software, as tools like FileZilla and WinSCP support both protocols, though you must select the correct connection type. ### Why does my FTP connection fail when I use a firewall? Your FTP connection fails with a firewall because FTP uses separate dynamic ports for data transfer, which firewalls often block, whereas SFTP uses a single port 22 that is easier to allow. ### Are FTP and SFTP interchangeable for web hosting uploads? No, FTP and SFTP are not interchangeable for web hosting uploads because many hosts only offer one protocol, and SFTP requires SSH access that some shared hosting plans do not provide. ### What is a common beginner mistake when choosing between FTP and SFTP? A common beginner mistake is assuming FTP is fine for all tasks, ignoring that any unencrypted login can expose credentials, so you should always choose SFTP when available. ### Can I switch from FTP to SFTP without changing my file paths? Yes, you can switch from FTP to SFTP without changing file paths, but you must update your client settings, open port 22, and ensure your server runs an SSH daemon.