Por que minhas velocidades de download FTP são lentas?

FTP is one of the most common methods usado para transferring files from a remote server to seu computador. FTP transfer can have an ideal experience if FTP speeds are maximized but that is not always the case.Neste guia, we will provide all the information needed so that você pode troubleshoot your problems and find optimal solutions, and use most of your resources for better speed performance.

Table of Contents:

2. Possible speed limitations:
2. FTP speeds metrics
4. Network Bandwidth limitations
6. Network hardware limitations
8. Testing FTP speeds
4. FTP working mechanism and protocols:
2. How FTP works?
4. Alternative to FTP protocol
6. Configuring your FTP client for maximum speed 
2. Concurrent Baixars
4. Segmented Baixars
6. Other settings which can improve FTP speeds
8. Troubleshooting slow FTP speed
2. Verifying network
4. Using wired conectarion vs Wireless network
6. Checking your Firewall

2. Possible Speed limitationsYour network largura de banda is the most important factor which determines your FTP speed. Knowing your network largura de banda would enable you to understand the network resources disponível at your end.
• FTP Speeds metrics:Your ISP may have provided your largura de banda in terms of MB/s or Mib/s which have different meanings. So let’s first get our speeds metrics understanding right. We will use 1 Mbps (Megabits per second) as the base unit.

• One Mbps = 1000 Kbps (Kilobits per second). 
• 1 Mbps = 125 KB/s (Kilobytes per second).
• One Mbps = 976.5 KiB/s (Kibibites per second). 
• 1 Mbps = 122.07 KiB / s (Kibibytes per second). 
• One Mbps = 0.953674 Mib/s (Mebibites per second).
• 1 Mbps = 0.125 MB/s (Megabytes per second).

• Network largura de banda Limitations:
  Most ISPs advertise their Internet velocidade de downloads in Mbps. While it is technically correct, it confuses many consumers, because their testing tools display other metrics. Some ISPs também advertise only their asymmetrical speeds. They show how incredible their velocidade de downloads are but don’t mention the upload speeds, which sometimes are 3x slower. To know your real largura de banda, measure it using online testing tools. Você pode use tools like ookla speed test which fornece you all the details do seu upload speed to velocidade de download and também the correct speed metric usado para measuring your speed.

• Network Hardware Limitations:
  Your Local machine’s limitations – A computer with low CPU and ram memory can result in slower FTP speeds but a high-end computer with average network largura de banda também doesn’t give encouraging speeds.
  Wi-Fi conectarions are slower due to packet loss and delay. Wi-Fi protocols like 802.11n support high-speed largura de banda up to 300 Mbps but they are not ideal choice for constant uploading and downloading.
• Testing your FTP velocidade de downloads:
  Você pode test your FTP velocidade de downloads using popular free-to-use tools like Tele2Speedtest. This service allows you to test both the upload and velocidade de download through your FTP client without providing a nome de usuário and senha.

2. FTP working mechanism and protocols:
2. How FTP works?FTP works as a basic server/client protocol. In simples words, a network conectarion enables you to send and receive files with each other. It uses the TCP/IP protocol model for communication and for file transfer. It uses port number 21 for creating conectarions but the downside of FTP is that it doesn’t provide encryption.The FTP Client fornece: 

• Seedbox Login credenciais.
• FTP commands. 
• browse directory

The FTP Server fornece

• Authentication.
• Directory display
• Port assignment.

Let’s understand the functionality of FTP keeping seedbox in mind:

2. Your seedbox fornece credenciais and IP or hostname to acessar sua seedbox (FTP server) remotely from seu computador (FTP client)
4. You log in remotely into sua seedbox from seu computador.
6. From sua seedbox você pode download files as the FTP server in sua seedbox fornece authentication and assign port numbers (21,22).
8.  Você pode now use your FTP client as an interface to conectar para o seu FTP server as it takes login credenciais, sends FTP commands, and browses through the file directory.

2. Alternatives to FTP:Apart from FTP, there are many other protocols and applications which provide much better security and file transfer speeds compared to FTP. A protocol like SFTP(SSH File Transfer Protocol) works through SSH and fornece much better security over FTP. HTTP and HTTPS provide much faster speeds along with good security features which makes it a good alternative to FTP as a whole.
4. FTP vs SFTPThe main difference between the two protocols (FTPS and SFTP) is their way of functioning. Há a performance overhead on FTPS since it needs multiple ports. For every new transfer file is requested, FTPS requires a new port for the data channel. The upside of isto é that the control and data channels run asynchronously in two different conectarions; this exclusive data channel makes transfers much faster. While the  SFTP needs one port number for all communication para o data channels, making it much easier to secure and with less performance overhead. But having the same channel for control and data can turn out to be a bit slower.
6. Configuring your FTP client for maximum speed
2. Concurrent Baixars:The concurrent download is a technical concept where it gives the ability to download multiple files simultaneously at the same time using FTP. FTP applications that support this feature create multiple conectarions para o server for downloading. It is very beneficial when someone is trying to download a folder of files. Let’s assume that  há a session largura de banda limitation then creating multiple conectarions will eventually exceed the provided per session speed which will result in an overall improvement in velocidade de download.Free to use FTP clients which provide concurrent downloads are – FileZilla
4. Segmented Baixars:A fragmented download is actually a file transfer concept where a large file at the sender end is broken into fragments or pieces and these pieces are sent para o receiver through multiple FTP conectarions and at the receiver’s end these pieces are recombined to produce the original file.In this FTP transfer technique fragments of a single file are downloaded simultaneously through multiple FTP conectarions and after downloading these fragments these are recombined to create the original file.Free to use FTP apps that provide this capability are: BitKinex, CuteFTP Pro, Progressive Baixarer (MAC)
6. Other settings which can improve FTP speedsFTP Speed limits: Please make sure that your FTP client does not have any download/upload speed limits. FTP active and passive mode: Se vocêr FTP is hosted with NAT( proxy or VPN), the FTP Passive mode should be configurard. The passive mode seems to be slower than active.
8. Let’s verify the network Loss of packets within the network can também contribute to slower FTP  speeds.
10. Ping the local gateway

Related Speed Guides #

• Get Faster FTP Baixars
• Maximize FileZilla Speed
• Reroute for Better Speeds
• Why Is My Seedbox Slow?