Бездисковая загрузка по технологии iscsi на базе ос windows


In multicast mode, a single data stream is received by multiple hosts. Standard
connections («unicast») require a separate connection for each data stream going
out of the server, but a multicast transfer needs only a single connection.
Multicasting therefore reduces the load at the server and increases the network

There exist two proposals for multicast TFTP: RFC 2090
and mTFTP defined in the Intel PXE specification. RFC 2090 is a fairly complex
protocol if implemented in full at both the client and the server. PXE’s mTFTP
is much simpler, but it has important limitations:

  • No option negotiation is possible.
  • The client cannot ask for a specific file, it will always receive a particular
    file from the server (the PXE specification suggests to use a different multicast
    IP address for every file).
  • When the «master client» disappears, the other clients are not signalled, meaning
    that another client will only restart the transfer (and become the new master
    client) after a time-out —which may be quite long.

The master client is the client that sends the acknowledgements: in a multicast
situation, several hosts receive the same data packets from a server, but only
one of these may (and must) answer.

The complexity of RFC 2090 lies in the ways that it implements partial transfers.
According to the RFC, each client should maintain a list of packets that it
has received and (if it is selected by the server as the «master client») ask the
server for the packets that it still lacks. A mTFTP client/server will always
restart the transfer with the first block, and therefore a client only has to
remember the first block number that it received. An RFC 2090 client can be
simplified accordingly (without needing to change the protocol): instead of a
map of all received packets, let it just remember a single span of consecutive
packets. Any received series packet that expands this range is accepted. Any
series of received packets that lies outside the span is ignored.

For example, assume that a client drops into an existing stream and it sees the
packets 683 to 1254 pass by. It can determine whether that last packet (1254) marks
the end of the file, by checking whether that packet is a full data block.
A next sequence of packets from 1 to 200 would be ignored, but if the client
receives packets 500 to 700, it will accept 500 to 682 and update its span to
500 .. 1254. When the client becomes the master client before seeing a complete
file, it asks the server for at most two sequences: from packet 1 to the start
of its span and from the end of its span to the end of the file.

Neither type of multicast TFTP works well with block counter roll-over. Since
mTFTP does not support option negotiation at all, data transfers are limited to
32 MiB (minus 512 bytes). A multicast TFTP host implementing RFC 2090 could
negotiate larger block sizes and it could be extended to handle the proposed
(non-standard) «toffset» option.


The TFTP protocol uses a lock-step algorithm. After the transmitter sends a block of
data, it waits for an acknowledgement of reception before sending the next block.
The transfer rate is therefore limited to the round-trip time (RTT). If the round-trip
time between two hosts is 20 ms, for example, then the transmitter can send up
to 50 blocks per second. With a default block size of 512 bytes, the transfer
rate is bound to 25 KiB/s.

One way to improve this is to use larger blocks. On links with a large
round-trip time, transfer speed may improve dramatically by using block sizes
of 1024 or 1468 bytes. (As was mentioned earlier, 1468 bytes is a common limit,
chosen so that the total size of the data payload and protocol headers does not
exceed the 1500-bytes Ethernet MTU.)

Although the TFTP protocol is standardized as «lock-step», it will actually work
with a transfer window. The
WvTftp server
pioneered this design. With a transfer window, the file transmitter sends
new packets before having received the acknowledgements for previous packets.
With a transfer window, multiple packets may be «in flight» on the network: these
are packets that have been sent out, but have not yet been acknowledged. The WvTftp
implementation refers to the transfer window as «negative latency», by the way.
I prefer the term «transfer window», because the technique is quite similar to
how the TCP protocol handles data transfer.

A transfer window does not require changes in the receiver of the file: each
received data block is still acknowledged individually. A receiver should
check that the received packet is the one that it expects, because with multiple
packets in flight the packets may arrive out of order. However, TFTP receivers
should already check the packet number for reasons of avoiding the
Apprentice Syndrome.

A transfer window on TFTP should just work out of the box. When you choose the
size of the window too large, it may damage performance instead of help it, because
the receiver may not be able to handle the packets at the speed that the transmitter
tries to pump them over the network. If the receiver «back-log queue» is smaller
than the transmitter window, packets may get dropped, and the transfer will then
stall on the time-outs.

To avoid the above scenario, I propose the option «window» that the client can set.
In option negotiation, the transmitter and sender can then select the smallest
window that either side handles optimally. The parameter of this option is the
number of data packets, not bytes. So if you negotiate a window of 4 and the block
size is 1024, there may be 4 packets with 1024 bytes each in flight at any time.

I have referred to the TCP protocol essentially using the same technique for a
(sliding) transfer window.
The TCP protocol uses a combination of negotiation and detection of the network
congestion to determine an optimal window, using
slow-start and
back-off algorithms.
I feel that option negotiation lies more in the nature of the TFTP protocol than
these adaptive algorithms.

Comparison Between TFTP and FTP/SFTP

As I have mentioned at the beginning of this article, TFTP is not a secure protocol to use compared to FTP (File Transfer Protocol) or SFTP (Secure File Transfer Protocol) which uses SSH as underline protocol.

Let’s see their main differences:

Uses Unreliable UDP communication Uses Reliable TCP communication Uses Reliable TCP communication
Works on UDP port 69 Works on TCP port 20/21 Works on TCP port 22
Not Secure Medium Security (using username/password) Higher Security
No authentication Uses username/password Either username/password or SSH keys can be used
No encryption No encryption Traffic is Encrypted

Best TFTP server

Name IPv4/IPv6 File Size Limit Link
SolarWinds Free TFTP server IPv4 4 GB Learn More
Spiceworks TFTP server IPv4 33 MB Learn More
Progress WhatsUp TFTP Server IPv4 4 GB Learn More

1) SolarWinds Free TFTP server

SolarWinds provides a free TFTP server for Windows that offers basic functionalities like IP-range lockdown, etc. It can transfer files up to 4GB in size. This server management service is easier to manage with native Windows tools.

Key Features:

  • Suitable for transferring device configuration images
  • Communicates with several devices simultaneously
  • It offers concurrent transfers from multiple devices and runs as a Windows service.
  • Let’s you authorize a specific IP address or a range of IPs altogether.
  • Easy to use TFTP software with backup network devices and configurations.
  • Offers highly scalable multi-user administration and advanced device config backup.
  • Free TFTP server which runs on Windows easily

2) Spiceworks TFTP server

Spiceworks is a complete IT management tool that provides its users with free TFTP servers to make their work easy.

This TFTP software is one of the best TFTP servers developed for IT professionals to track their network device config. It also enables you to backup and view all your config in one place.


  • Allows you to compare current network configration with backups.
  • These TFTP servers can be used for configuration image transfers
  • Helps you to push out firmware updates in the background.
  • Free and in-built features of Spiceworks.

Link: https://www.spiceworks.com/free-tftp-server-for-network-configuration-management/

3) Progress WhatsUp TFTP Server

WhatsUp Gold is one of the best TFTP servers, which helps save you time while doing networking. This service-based tool allows you to securely transfer files across the network.


  • It offers a simple transfer of system configuration.
  • Sturdy, clean, and attractive GUI based interface.
  • It helps you to save time and effort when uploading and downloading the file.
  • Compatible with the older versions of Windows such as XP, Vista, and others.


4) TFTP Desktop Server

TFTP desktop server is the best solution for updating routers, OS, image transfer, and remote booting. It also allows you to configure multiple devices in a single network.


  • Real-time TFTP graph transfer helps you to work across the network.
  • Unlimited file sizes: no 16/32MB file size limitation
  • Graphs TFTP transfers in real-time
  • Directory and IP address-based security
  • Secured and locked TFTP root folder
  • It offers security based on the directory as well as the IP address.
  • Extremely fast file transfers


5) WinAGents

WinAgents provides a fully recognized TFTP server. It is a specially built tool to work consistently in the background. It helps you to create stock copies of different data like flash images, config files, and device settings in case of an emergency.


  • Offers virtual TFTP folders, servers, and graphic utilities for status control.
  • Offers highly scalable server architecture that has a built-in cache system and remote server administration.
  • It helps you to set different access rights for various folders.
  • It provides an option for setting the highest precedence for the server process
  • Provide IP based access control
  • File transmission using firewalls, and high precedence for a server process.


6) atftpd

ATFTPD is a Windows TFTF server that is widely used in various types of networks. It offers multithreaded and multicast architecture.


  • Full TFTP options support with high compatibility options.
  • It also supports PXE or MTFTP specifications.
  • Provides fast servers to make your packages search as fast as possible.
  • It helps you to replace the requested filename with the new one.
  • Allows users to restrict accessing the untrusted hosts.
  • Free TFTP Server for Linux.

Link: https://pkgs.org/download/atftpd

7) haneWIN TFTP server

haneWIN TFTP is a multithreaded server-based and fully realizable TFTP server for all versions of Windows. This TFTP server for Windows helps you to achieve maximum reliability and high performance while transferring the data.


  • Implemented as a Windows service and also supports all types of Windows versions.
  • This TFTP server for Windows includes an intuitive control panel for accessing all services.
  • Offers multithreaded architecture for high performance, security, and reliability as well.
  • It helps you to receive data directly into another application using a pipe option.

Link: https://www.hanewin.net/tftp-e.htm

TFTP Download/Upload File

I created the following text file in “/srv/tftp”:

Linux-based network monitoring for your network.

Try it Now

netbeez.net$ cat hello_server.txt
Hello world from TFTP server!


netbeez.net$cat hello_server.txt

Hello world from TFTP server!

On the client side I start a tftp interactive session and I download it as follows:

netbeez.net$ tftp
tftp> connect
tftp> get hello_server.txt
Received 31 bytes in 0.0 seconds
tftp> quit
netbeez.net$ cat hello_server.txt
Hello world from TFTP server!




tftp>get hello_server.txt

Received31bytes in0.0seconds


netbeez.net$cat hello_server.txt

Hello world from TFTP server!

On the client side, I can upload a file with the following commands:

netbeez.net$ tftp
tftp> connect
tftp> put hello_client.txt
Sent 31 bytes in 0.0 seconds
tftp> quit




tftp>put hello_client.txt

Sent31bytes in0.0seconds


If you get the following error when uploading:

tftp> put hello_client.txt
Error code 1: File not found


tftp>put hello_client.txt

Error code1File notfound

It can mean one of the following:

  1. The file “hello_client.txt” doesn’t exist on the servers “/srv/tftp” directory
  2. The “- -create” option is not enabled on the server (see above)
  3. The file “hello_client.txt” exists on the server but it’s not publicly writable

TFTP is a handy and lightweight server which is useful to upload and download files, but it comes with some important limitations that you have to keep in mind. You may have used TFTP if you’ve ever remotely booted a machine with PXE or BOOTP.

Как проверить работу сервера tftpd32?

Для того, чтобы передать файл необходимо открыть cmd.exe и выполнить команду:

Для того, чтобы получить файл с tftp-сервера, есть команда:

Использовать tftpd32/tftpd64 для каких-то постоянных задач не рекомендуется, так как у него практически нет никакой защиты от несанкционированного подключений к серверу. Да, можно ограничить доступ к нему только определенным IP-адресам, но та легкость, с которой можно подменить IP-адрес, позволяет сказать, что это не относится к сетевой безопасности вообще.

Включать сервер tftp с таким «уровнем безопасности» можно только на короткое время, для выполнения каких-то сервисных работ, а лучше вообще делать это в изолированной сети.

The best Free Linux TFTP servers

There are a variety of TFTP servers available for most Linux distributions. A popular one is the Advanced TFTP server that comes in a package named . The ‘d’ at the end of many Linux packages stands for daemon, which is a Unix-like term for an application that runs in the background. A Linux daemon is akin to a Windows service.

The ATFTP server supports multicast and is multithreaded which makes it a little more flexible to deploy in non-standard network installations. Use or to install it, depending on your Linux distribution.

1. atftpd

You’ll find the sparse configuration file for atftpd in . Set up some quick options such as what ports to listen on, and whether to run as a daemon or via inet.d, and you’re ready to go.

You’ll need a TFTP client. There are many, but the client is a quick and easy command line solution. To install it, use . Then connect and upload a file:

We can see the has been uploaded to the path specified in the config file

  • Configuration is relatively simple and done during the installation process
  • As a CLI tool, it’s the lightest option available
  • Runs as a simple daemon


  • You’ll still need a TFTP client
  • Strictly command line-based

Key Features:

  • Command line
  • Built into Linux
  • Free TFTP Server for Linux

2. tftpd-hpa

Another popular TFTP server for Linux is tftpd-hpa. Since the TFTP protocol is so simple, there are no really obvious advantages to choosing one TFTP server over another. However, due to dependencies and documentation deficiencies, sometimes one server will work better than another. If you’re unable to get atftpd working, give tftpd-hpa a try.

You’ll find the configuration file in :

Modify the settings as desired, then startup the server using .


  • Support beyond the configuration file may be difficult to find
  • Not much different than other Linux CLI options on the market

Key Features:

  • Command-line
  • Straightforward

[edit] General

This article describes how to do an initial flash or a TFTP recovery flash for your device.

  1. Unplug the router, get a for the PC, and connect it via network cable to a router LAN port
  2. Set a fixed IP address on the PC with the same network as your router, e.g. Router:, PC:
  3. Setup the TFTP client, then start a continuous ping (-t switch is needed for this in Windows) to the router
  4. Plug in the router and start the TFTP client as soon as there is a TTL=100 ping response. The client should show transfer.
    • TTL=64 means application code has been reached. If the router isn’t responding, it is soft-bricked (use OEM firmware)
    • Read about timing problems below:

Special Asus TFTP Flashing Procedures

Some routers like the Asus WL-500xx series (WL-500G, WL-500G Premium, WL-500W, WL-500G Deluxe), need additional steps to perform a complete and proper initial flash. See this wiki page: Asus TFTP Flash

Special for Vista, Win7 and Win 2008

In order to catch the narrow window for TFTP flash, you should use platforms with simple TCP/IP implementations that don’t have CTCP implemented: Windows XP or Linux are reported to work, but some have reported significant problems with Vista, Windows 7 or Windows 2008.

For more information see this posting

Edit: While some may have reported problems, CTCP is definitely not the issue, because it is disabled by default in Windows Vista and Windows 7. So unless people are specifically turning it on, it isn’t running. I personally just used TFTP on my router with no difficulties, although mine is a Netgear WNDR3700 that was waiting for a TFTP flash and didn’t have this race condition at boot as some of these routers seem to. But again, even if you have an issue it’s not CTCP. Check out the wikipedia article on CTCP for information on how to check if it is running and how to disable it (both are simple command line entries).

If having issues, try connecting a separate network switch between the PC and router, so the PC network port sees a connection before the router port is up. This should allow for a faster ping reply. Then follow the instructions as normal.

Special for Linksys WRT54GL Users

If the router seems to be bricked so that the power light is constantly blinking and pinging the router results in TLL=100 continuously, then there is still a great chance that tftp can help.
Firstly you must flash the router with the original firmware available at Linksys homepage www.linksys.com, since flashing it with DD-WRT probably won’t give any result at all. Then do a 30/30/30 and after that you can flash with DD-WRT Mini. The initial flashing can be done with only the mini version, perhaps later you can move on to bigger versions of it.


The use of TFTP services does not require an account or password on the server system. Due to the lack of authentication information, tftpd will
allow only publicly readable files (o+r) to be accessed, unless the —permissive option is specified. Files may be written only if they already exist
and are publicly writable, unless the —create option is specified. Note that this extends the concept of »public» to include all users on all hosts
that can be reached through the network; this may not be appropriate on all systems, and its implications should be considered before enabling TFTP service.
Typically, some kind of firewall or packet-filter solution should be employed. If appropriately compiled (see the output of in.tftpd —version)
tftpd will query the hosts_access(5) database for access control information. This may be slow; sites requiring maximum performance may want to
compile without this option and rely on firewalling or kernel-based packet filters instead.

The server should be set to run as the user with the lowest possible privilege; please see the —user flag. It is probably a good idea to set up a
specific user account for tftpd, rather than letting it run as «nobody», to guard against privilege leaks between applications.

Access to files can, and should, be restricted by invoking tftpd with a list of directories by including pathnames as server program arguments on the
command line. In this case access is restricted to files whole names are prefixed by one of the given directories. If possible, it is recommended that the
—secure flag is used to set up a chroot() environment for the server to run in once a connection has been set up.

Finally, the filename remapping (—mapfile flag) support can be used to provide a limited amount of additional access control.

Install TFTP Client on Windows 10

1) Make sure that you have administrative access to enable the feature.

2) Go to Control panel and click on ‘Programs & Features’

3) Click on ‘Turn Windows features on or off’ then tick the ‘TFTP Client’ as shown below.

4) Press OK and wait for the installation to complete.

How to Verify that Windows TFTP Client Installed Successfully?

TFTP client is like telnet client when the feature has not installed the commands will return unknown command error.

For example, before installing the TFTP client, if you open a command prompt and type ‘tftp’, it will return the below message.

When it is installed, the same command will give the below output.

That was the clear indication that Windows TFTP client is installed on your computer.

Install TFTP Client on Windows 10

Fortunately, most Windows versions (servers and workstations) come with the TFTP client feature built-in, you only have to enable it.

  1. Go to Windows Start and search for “Control Panel”  then click on “Programs”
  2. Open Turn Windows features on or off.
  3. From the Windows Features list, find the TFTP Client feature and turn it on. Wait for the installation to complete and click “Ok”.

TFTP is considered an unsafe protocol, so Windows does not allow it by default. You will have to either turn off the Windows firewall (which is not recommended) or add an exception on the Firewall for the TFTP Client.

Let’s open the Windows Firewall and configure the rules and exceptions to allow TFTP.

  1. Open the Windows Start menu and type “Firewall” > open the “Windows Defender Firewall with Advanced Security,” and run it as an Administrator.
  2. Make sure that the firewall is enabled, and click on “Allow an app or feature through Windows Defender Firewall”.
  3. Click on “Change Settings,” then “Allow another app”.
  4. Click on “Browse” and find the TFTP.exe from the System32 folder and click on Open. Then click on “Add”.
  5. You can now, find the application on the Windows Defender Firewall, enable both Private and Public.

Как установить TFTP-сервер на Windows

Протокол Trivial FTP, как вы уже знаете, является очень простым в реализации, и если говорить о низкоуровневой передаче файлов, при условии отсутствия жёстких требований по безопасности, то он был и остаётся весьма востребованным.

Кроме загрузки ОС на рабочие станции, он широко используется для загрузки и модификации конфигураций множества встроенных устройств, являющихся частью домашних сетей и системы «Умный дом».

В частности, этот протокол нередко можно встретить на маршрутизаторах, в мобильных телефонах, в популярных медиа-стримерах. Он используется для передачи единичных файлов на относительно небольшие расстояния. А вот в глобальных сетях, том же интернете, использование TFTP недопустимо из-за низкой защищённости. Там царствует FTP, а если требуются повышенные требования к безопасности, то SFTP.

Если при помощи FTP, требующего ввода логина/пароля, можно осуществлять целый спектр операций с файлами (передача в обоих направлениях, переименование, удаление, просмотр), то в TFTP вы можете файлы только скачивать, и только по одному. Зато здесь используется стек UDP, отличающийся простотой кода, в отличие от распространённого, но достаточно сложного TCP/IP.

У протокола TFTP низкая функциональность компенсируется надёжностью, поэтому серверная часть кода протокола занимает на диске или в памяти очень мало места, что делает его идеальным кандидатом для использования во встроенных устройствах, у которых дефицит памяти – привычное явление.

Итак, если суммировать, для чего нужен клиент TFTP, то можно утверждать, что главное преимущество протокола – простота реализации его клиентской части.

ВНИМАНИЕ. Протокол не предусматривает наличие учётных записей пользователей, поэтому всегда существует риск подключения к TFTP серверу или клиенту других лиц, в том числе и со злонамеренными целями

Поэтому использовать его нужно, если сеть защищена другим способом, например, файерволом.

Хотя TFTP-сервер чаще всего можно встретить в ОС Linux, существует немало решений, предназначенных для Windows и даже для macOS (TFTPD32/64, haneWIN, WhatsUp, WinAGents и др.).

Рассмотрим процедуру установки TFTP-сервера на примере весьма популярной утилиты TFTPD32, созданной на условиях открытого исходного кода. Кроме собственно TFTP-сервера, она включает и другие серверные протоколы (DHCP, DNS, SNTP) и позволяет управлять пулом IP-адресов. Разумеется, ситуации, когда требуется наличие всех перечисленных функций, сложно придумать даже теоретически, но дополнение TFTP одной из них вполне может оказаться полезным.

При скачивании программы можно выбрать portable-версию, если не хотите возиться с инсталляцией.

При запуске утилиты нужно будет указать пару параметров:

  • каталог, куда будут скачиваться файлы (дефолтный путь – место установки программы);
  • IP-адрес сервера, на который нужно будет обращаться клиентам.

Для выполнения простейших операций этого будет достаточно. Но в ряде случаев потребуется дополнительная настройка программы.

Соображения безопасности

TFTP не включает механизмов входа в систему или контроля доступа

Необходимо соблюдать осторожность при использовании TFTP для передачи файлов, когда требуются аутентификация, контроль доступа, конфиденциальность или проверка целостности

Обратите внимание, что эти службы безопасности могут быть предоставлены выше или ниже уровня, на котором работает TFTP

Также необходимо проявлять осторожность в правах, предоставляемых процессу сервера TFTP, чтобы не нарушать безопасность файловой системы сервера. TFTP часто устанавливается с такими элементами управления, что только файлы с общедоступным доступом для чтения доступны через TFTP

Также обычно запрещены перечисление, удаление, переименование и запись файлов через TFTP. Передача файлов по TFTP не рекомендуется, если присущие протоколу ограничения могут вызвать непреодолимую ответственность.

TFTP часто устанавливается с такими элементами управления, что только файлы с общедоступным доступом для чтения доступны через TFTP. Также обычно запрещены перечисление, удаление, переименование и запись файлов через TFTP. Передача файлов по TFTP не рекомендуется, если присущие протоколу ограничения могут вызвать непреодолимую ответственность.

Проверка работоспособности TFTP сервера

Чтобы проверить, работает ли TFTP сервер, необходимо просто выполнить копирование файла с сервера на клиентское оборудование.

Для этого нужно запустить консоль на клиенте, а затем выполнить команду tftp GET <имя копируемого файла>. Если всё настроено правильно, после паузы, во время которой и происходит передача данных, указанный файл должен появиться на клиентском оборудовании.

Отметим, что копирование будет производиться в каталог, в котором запускалась консоль, если в настройках программы не указан другой путь. Но не все утилиты имеют такие настройки. Например, если вы используете WinAGents TFTP Server, вам нужно будет выполнить последовательно две команды:

  • cd <путь назначения>;
  • tftp168.1.35 GET <имя копируемого файла>.

В этом случае копирование будет производиться в указанную вами директорию.

В утилите TFTPD32 копирование будет выглядеть несколько иначе. На клиентской машине следует запустить приложение, открыть в нём вкладку TFTPClient, а затем указать IP-адрес сервера, а затем имя файла, который мы намереваемся скачать. Сохранить его можно и под другим именем, указав его в соответствующей строке настроек. Завершив все приготовления, жмём кнопку GET и дожидаемся результатов операции.

Как видим, использование TFTP сервера не ставит перед пользователем неразрешимых задач, за исключением случаев, когда требуется доступ за пределы локальной сети. Но для этих случаев существуют другие, более защищённые и безопасные сетевые протоколы.

WinAgents TFTP Server

WinAgents Software Group offers free downloads of their TFTP Server. It’s a legacy software designed to run on Windows 2000, 2003, Vista, and 7, which makes it useful if you work with these older OSes on your network. It can probably work with Windows 10 as well, you just need to try it.

WinAgents TFTP Server operates as a background service and implements an IP-based access control model for some kind of network security.

It also supports sending files through firewalls by configuring a UDP port for the connections. Administrators who manage large intranets or remote sites will find the remote configuration features helpful. The cache system makes the system highly scalable compared to other free TFTP tools.

Test Windows TFTP Client on Windows 10 or any Other Versions

Let’s assume that the TFTP server setup appropriately is done and files are available at the correct location. Before you download a file from the TFTP server, you must know the right file name with the extension.

In this example, I’m going to download a file called ‘tftp.zip’ from the TFTP server

Type the below command in command prompt (you must have a working network communication with the server, the ping command is handy to confirm the connectivity)

 Tftp -i GET  

The below message indicates that the file transfer is successful. The file will be downloaded at the location where you are executing the command. In this case, it is C:\Users\Dinesh folder.

To upload a file using the TFTP tool, use the following command.

 Tftp -i PUT  

The below command shows the successful file upload to the TFTP server by Windows TFTP client. The file will be uploaded to the root of the TFTP settings on the server. We do not have any option to select the location.

As I’m using the Solarwind TFTP server in this example, the above command uploaded the file to this root location.

There you go, we learned how to install the Windows built-in TFTP client on Windows 10 and how to ensure that is working fine. We showed the simple steps to upload and download a file using the TFTP client. By the way, this method is applicable for Windows 8.1 and server versions also.

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