How to create a network server. Creating a Minecraft server. How to make a server from your home computer

Creating your own local server based on a regular personal computer– the task is quite complex and painstaking. Here you need to understand the following points:

1. , and whether you even need your own server. This is one of the key questions that requires a clear and unambiguous answer from the future administrator.
2. What technical resources are at your disposal, and what will be necessary for the operation of a full-fledged server. Minimum technical requirements to create a “high-quality” server are quite high: the equipment alone will cost 70 - 80 thousand rubles.

Also note that for normal operation resource (for which you plan to make your own server), you need the server computer to be constantly on and work without interruptions. Therefore, it is necessary to ensure an appropriate power supply.

3. What cash you are willing to spend on creating and maintaining the server. In addition to the above-mentioned hardware costs, to create a full-fledged server on a computer, you need a dedicated (statistical) IP address and high speed data reception and transmission (the minimum value is 10 Mbit/sec). Accordingly, for this you will have to pay extra to the provider and enter into an additional contract for the provision of such services.

And before you try to make a server out of a computer, you need to clearly define all these nuances.

How to make a server from a home computer?

To create your own server, you first need to install a multi-user network operating system.

The choice is huge: Debian, FreeBSD, CentOS, OpenSUSE, Ubuntu, Windows and many others.

On the Internet you can find many examples of testing in the operation of the above-mentioned operating systems and their ratings in accordance with the test results. For example, the “SOS” rating for 2016:

1st place: “Debian” and “Ubuntu Server”;

3rd place: “FreeBSD” and “ Windows Server»;

4th place: “Red Hat Enterprise”;

5th place: “Fedora”.

Of course, the lion's share of the network software market is made up of operating systems that occupy first place in the ranking. Therefore, in order to create a server on a computer for the first time, we recommend choosing one of them.

As an example, we will focus on installing the Ubuntu Server operating system.

How to set up a local server from scratch on ubuntu?

1. Download and upload the operating system image to bootable USB flash drive. Boot your computer from the flash drive: at the first stage you will be asked to select a language.

3. In the next steps, select "Region" and "Keyboard Layout Settings";

4. Specify your username, computer account and password,

then click “Continue”;

configure “Disk Layout”

and select which disk the system is installed on;

6. Wait for the installation and system update to complete.

7. Select the software you need to get started.

8. Confirm that the installation is complete by clicking on the “Continue” button;

9. After restarting the computer to log in account You will need to enter the username and password created in step “4”;

10. This completes the installation of the server operating system and the initial creation of the server.

How to make yourself an admin on your server?

1. To obtain administrator rights, enter the command “sudo su”;
2. By default, the server’s network settings are obtained using DHCP, but for the server to work, you will need to change the “iface eth0 inet static” value in the “/etc/network/interfaces” file to a “static IP address”. The text should look something like this:

iface eth0 inet static
address 192.168.0.100
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
gateway 192.168.0.1

After saving, restart the network with the command “/etc/init.d/networking restart”.

In this instruction, I will teach you how to create your own Minecraft server without the help of Hamachi and other applications. So, let's get started!

To create a server, you need to meet several requirements. Most of them depend on the provider providing you with their services. Your IP must be static, otherwise they won’t be able to connect to you. If it is dynamic, then you can use third-party sites to third level domain registration. Also, your ports must be open.

If you don’t have a static IP or are too lazy to open ports, you can use the instructions.

Instructions(we do everything in order):

1) First, download the server itself. For Windows, select file Minecraft_Server.exe You can download it on the official Mojang page.

2) After downloading this file, place it in the folder where the server will be located. Then, run it and it will create the necessary folders and server files. After the world is generated, we turn off the server and start setting up.

(This is what the server folder looks like)

3) After this, you need to find out your IP in order to subsequently enter it in the required settings line. You can find out the IP.

4) The main server configuration file is server.properties, it looks like this:

The main setting is the field: server-ip=, in which you need to enter the address of your computer (IP) after the "=".

This is what it should look like: server-ip= 109.169.230.149

Apart from this, here you can also set up your server according to some of the parameters, for example, disable monster spawning, install your own map, whitelist, online mod and much more.

Save the settings and start the server!

5) The server is ready and to connect to it, players just need to enter your IP in the server connection field.

6) This is what the server log will look like when they try to connect to it.

If you want to play with friends on pirate version of Minecraft, disable authentication by replacing the line:

online-mode= true

to the value:

online-mode= false

================================================

If you have problems creating a server, please describe it in detail in the comments. Our specialists will try to help you.

Computer games in modern world often focus on co-op mode and multiplayer so that players can have fun in the game not only alone, but also with friends and other players. However, often players prefer to play only with their friends. To do this, they create and configure local servers games, give a login and password to selected friends and play on it together. But not everyone knows how to create a local network server on their own.

How to create and configure a server over a local network

Many players do not bother with creating a local network on their computer, but use various simple service programs like Hamachi, P2PLauncher, EasyVPN and Garena, which create this local network. Such programs are the easiest to set up and do not require special skills or knowledge. Here's how to do it using the Hamachi program as an example:

Download and install the Hamachi program from the official website.
Launch the program and register.
Create a room with or without a password. However, do not enter the server IP address in the field.
Download and run the server program for the game you want.
Tell your friends and chosen people login and password for the room in the Hamachi program, otherwise they will not be able to connect.
Provide your computer's IP address to the players. They will try to connect to your server using it.

After this, the local network will be configured and you will be able to play with friends on your own server.

You can also read some of our useful articles on this site.

Transcript

1 SIMULATION OF NETWORK OPERATION IN NET-SIMULATOR Installation of NET-Simulator Compiled by: Korobetskaya A.A. NET-Simulator is a freely distributed program that allows you to simulate the operation of computer networks. You can download the program from the official website: The same website contains installation instructions, help and a description of an example network. For the program to work, you need to install a Java machine: To start NET-Simulator, simply unzip the archive and run the run.bat file. Attention! The path to the folder with NET-Simulator must not contain Russian characters! If everything is done correctly, the command prompt will start first, and then a window with an example network will open. In practice, more complex network simulators are used, in which many real devices are available. Examples of simulators: ns-3 (free); NetSim (proprietary); HP Network Simulator (free); Cisco CCNA Labs Simulation (proprietary). 1

2 Task 1. (2 points) Read the documentation and an example of a network. Answer the questions. What network devices can be used in Net-Simulator? How to add and remove devices to a project? How to connect the cable to the device? How to launch the terminal to configure devices? What commands does the NET-Simulator terminal support? 2. (4 points) Implement examples of networks from the manual. point-to-point network; network with a “bus” topology on a common hub; network with a “passive star” topology using a switch; connecting networks manually through a switch; connecting various networks through a router. 3. (6 points) Implement your own network according to the option and generate a report. Describe the subnetworks that make up the network using the following scheme: network address; netmask; network topology; number of hosts on the network; maximum valid number hosts; what devices are on the network; default gateway address (if any); broadcast address. Total for work: 12 points. For work, a report is drawn up in Word, which should contain answers to each item of the task. Instructions for performing the work These instructions do not duplicate information from the NET-Simulator website. Read it yourself and, if necessary, refer to the program documentation! Each example is saved in a separate project. Point-to-point network Point-to-point is the simplest network consisting of 2 workstations connected by cable. Create new project. Place 2 computers on the sheet and connect them with a cable. At correct connection 2 green lights on the computers will light up. 2

3 Double-click Desktop 0. A terminal window will open. Type help to see a list of available commands. The ifconfig command will allow you to view and configure the parameters of network interfaces (network cards, router connectors, etc.). 3

4 While we have not configured our network, the network cards of the computers are disabled and do not have their own address. To see this, enter the ifconfig command with the -a parameter: eth0 is the interface name (in reality it can be arbitrary); 4

5 Link encap: Ethernet connection standard used; HWaddr physical address (MAC address), unchangeable; DOWN state (off); Next comes the data transfer statistics. Let's assign an IP address with a mask to the first computer (x.x/24 addresses are standardly used for small local networks): A line with IP address settings was added to the interface description and the status changed from DOWN to UP. Similarly, we will configure the second computer to the /24 address (the address must be from the same network, for example, it will not work, but it will). Now let’s check the network’s functionality using the ping command (Ctrl+C stop transmission, in total you need to send 7-10 test 5

6 packages). Please note that while data is being transmitted/received, the green lights on the nodes flash and the cable lights up blue. During the transfer, not a single packet was lost. We have a working point-to-point network. Save the result as a separate project. Security questions: What is a network mask? What is the address of the network created in the example (net id)? What are the host addresses (host ids) on the network? Hub-based network. Bus topology (passive star) We will continue to improve the previously created point-to-point network, but it needs to be saved in a separate project. 6

7 Suppose we want to create a network of three computers. It will no longer be possible to connect them directly, because... Each computer has only one interface (network card). Even if in a real network the computer has two network cards, configure shared network Without network devices, it is quite difficult to make one of the computers a server. In the example, we implement a simple network based on a hub. It can be considered both as a “bus” and as a passive star. A real bus with one common cable cannot be created in Net-Simulator, because Exactly 2 devices are connected to the cable. So, add another computer, a hub, to the previously created point-to-point network and connect it with a cable, as shown in the figure (the location of the nodes on the sheet can be any): We will leave the network address the same, so we do not need to reconfigure the first two nodes need to. They will still be functional. Tip To repeat the previous terminal command, press the up arrow on your keyboard. It is necessary to configure only the third node, giving it an address from the same network, for example: 7

8 The hub itself is not an active device and is not configurable. Let's check the availability of the new computer: 8

9 The first packet from the new computer was lost (possibly a network problem), then the transfer proceeded without failure. Please note that when data is being transferred, the lights on all computers blink, i.e. The data is received by all devices on the network. Therefore, such a network will be very busy. Save the resulting network as a separate project. Similarly, you can add a fourth, fifth, etc. node If the number of nodes is greater than the number of hub connectors, then you can use multiple hubs, or even dedicate a hub to each computer to make the network look like a “bus.” The network setup will be the same in all cases. And in any case, the network can be considered implemented using a “bus” topology. Examples (no need to implement). 9

10 Test questions 1. Which network address at the hub? 2. How many nodes can there be in a network with a “bus” topology (real and model)? Networks using a switch. Passive star To reduce network load, you can use a switch instead of a hub. This device can analyze the physical address and does not transmit packets to all nodes, but only to a specific recipient. Such a network has a “passive star” topology: the switch located in the center does not control the network, but transmission does not go to all computers, as in a “bus,” but only to the necessary ones. To do this, the switch has a physical address table (mactab), which records which interface is connected to which node. 10

11 This table is filled in automatically. When attempting to transmit, the switch first polls all connected devices and learns their addresses. The addresses are entered into a table, and then the switch transmits only to the required address through the required interface. Because devices can come and go, the MAC table is periodically cleared and the switch polls the devices again. This allows you to keep the table up to date. To implement such a network, simply replace the hub in the previous project with a switch. There is no need to reconfigure computers. Now, if you check the network’s functionality, it will first send to all hosts, and then the switch will send data only to the required one (from to): 11

12 Without stopping the ping, check the switch's MAC address table: At the same time, start a transfer from host to and check the MAC table again: 12

13 After stopping the transmission, after a few seconds the table will be cleared. Save the resulting network as a separate project. Two networks on a common switch We can connect two different networks to one switch as if they were separate networks. 13

14 Add two more computers to the previous project and assign them addresses /28 and /28. Connect the new computers to the available connectors on the switch. Thus, we have two subnets: 1) with a mask, computers Desktop 0, Desktop 1, Desktop 2 14

15 2) with a mask, computers Desktop 4, Desktop 5 If we check the operation of the network, we will see that within each of the subnets packets circulate freely, but cannot get from one subnet to another, even though these networks are connected to the same device. The reason is that the computers do not have routing tables configured, i.e. computers do not know how to transfer data to another network. They simply won't start transmitting to an unknown address. When we assigned IP addresses to computers, one single line was automatically added to their routing tables: with the computer’s own network. You can view and configure the routing table with the route command. For computers on the first subnet it looks like this: And on the second subnet it looks like this: 15

16 Destination destination address for which the route is specified in this line Gateway to which gateway to send packets, * none, transmission within the local subnet Flags flags (set automatically): U route is active, G route uses a gateway, H destination address is an address of an individual host, and not of the network, the Metric metric determines the priority of the Iface routes, the interface through which the transmission is carried out. i.e. computers on the first subnet “know” only their local addresses from the range, and the second subnet only from. To connect the networks to each other, you need to add them to the routing tables of each computer. For computers on the first subnet (Desktop 0, Desktop 1, Desktop 2): For the second subnet (Desktop 4, Desktop 5): 16

17 Tip If you make a mistake when adding a route, you need to first remove the incorrect route from the table and then add the correct one: 1. Use the “up” arrow to scroll through the commands to the one in which you made a mistake. 2. Replace add with del and run the command. 3. Go through the commands again and correct the error. Now (only after setting up both subnets!) they can transmit packets to each other. Thus, we have two subnets connected to a common router. Save the resulting network as a separate project. Security questions: 1. Where did the second subnet mask come from? How many maximum computers can be connected to the network with such a mask? 2. Does the switch have a routing table? Connecting different networks through a router If two small networks, as in the previous example, can be combined using a single switch, then for large networks, which include many hosts and subnets, this option is not suitable because: a) the physical address table of the switch becomes very large, which requires additional memory and slows down its operation; b) to update the table, the switch requests the physical addresses of all network devices, and this additional traffic; c) each computer will have to enter the addresses of all subnets into the routing table. In reality, a router is used to connect networks. It distributes traffic between subnets and determines the delivery path of each packet. Then each computer does not need to know the addresses of all networks, it only needs to know the address of its router, which will already decide where to send the packet. Switches and hubs are also used in such networks, but they operate within a subnet. The traffic they generate goes no further than the nearest router. 17

18 Open a project in which we have created a passive star network on the switch, but have not yet added a second subnet. Add a router, another hub, two computers and the necessary cables to the project, as shown in the figure. Give the two new computers the addresses /16 and /16. Check the functionality of each subnet. 18

19 Now let's configure the router. Unlike computers, the router has 8 ports, each of which has its own interface (eth0-eth7) and its own IP address. We connected the first subnet (/24) to the eth0 interface, and the second (/16) to the eth7 interface. These interfaces need to be given addresses from the range of the corresponding network, for example and Note In real networks, traditionally the router receives an address with the last byte equal to 1 (for example,), and other devices starting with 100 (for example, etc.). Follow this rule when performing your variation. 19

20 All that remains is to tell the computers on the network the address of their router (enter it into the routing table). We need to specify that packets for all addresses except local addresses should be sent to the router. “All addresses” are entered into the table as a destination with the “default gateway” mask. Setting up Desktop 0 (Desktop 1 and Desktop 2 are configured in the same way): 20

21 Configuring Desktop 6 (Desktop 7 is configured in the same way): Checking the availability of a neighboring subnet: 21

22 In order to find out the physical address, the router uses ARP requests. During the transfer, you can view its ARP table (then it is cleared): If you start the transfer simultaneously on all network nodes: Note Real devices usually do not have a command similar to arp. It was added to Net-Simulator for clarity. Full network settings can be viewed through an html report (see example below). Save the project in a separate file and generate a report for it. Security question What devices will need to be configured in order to connect another subnet with a /24 address and three nodes to the router? 22

23 NET-SIMULATOR PROJECT REPORT Project file: Author: Description: Project created at: Report generated at: :56:6 Name: Desktop 0 Description: Desktop Interfaces: Name Status IP Address Netmask Broadcast eth0 UP Routing table: Target Netmask Gateway Metric Interface * 1 eth eth0 Name: Desktop 1 Description: Desktop Interfaces: Name Status IP Address Netmask Broadcast eth0 UP Routing table: Target Netmask Gateway Metric Interface 23

24 * 1 eth eth0 Name: Desktop 2 Description: Desktop Interfaces: Name Status IP Address Netmask Broadcast eth0 UP Routing table: Target Netmask Gateway Metric Interface * 1 eth eth0 Name: 3 Description: Name: 4 Description: Interfaces: Name Status IP Address Netmask Broadcast eth0 UP eth1 DOWN eth2 DOWN eth3 DOWN eth4 DOWN eth5 DOWN eth6 DOWN eth7 UP Routing table: Target Netmask Gateway Metric Interface * 1 eth * 1 eth7 24

25 Name: 5 Description: Name: Desktop 6 Description: Desktop Interfaces: Name Status IP Address Netmask Broadcast eth0 UP Routing table: Target Netmask Gateway Metric Interface * 1 eth eth0 Name: Desktop 7 Description: Desktop Interfaces: Name Status IP Address Netmask Broadcast eth0 UP Routing table: Target Netmask Gateway Metric Interface * 1 eth eth0 25

26 Task options Option 1. Option 2. 26

27 Option 3. Option 4. 27

28 Option 5. Option 6. 28

29 Option 7. Option 8. 29

30 Option 9. Option

31 Option 11. Option

32 Option 13. Option

33 Option 15. Option

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Every Minecraft player wants to play with his friends on servers, but it is very difficult to find a decent server, and you want to be the admin yourself, so you can create your own Minecraft server. We wrote this article and filmed a video in which we sorted out everything that relates to the server and after it, you are unlikely to ask the question how to create a Minecraft server on Windows.

Video instruction:

There are many Minecraft server cores, we will tell you about the four most popular ones.

Vanilla- official core from the developers. Pros: Released immediately after release new version; Cons: Not many plugins; Low optimization of resource use; You will have to install Forge separately if mods are needed.

Bukkit- Core based on Vanilla. Pros: Highly optimized compared to the standard kernel; Lots of written plugins from third party developers. Cons: You will have to install Forge separately if mods are needed; The project was completely closed at version 1.6.4, there is no support on the official website. Exists now along with Spigot.

Spigot- More optimized core based on Bukkit. Pros: Many improvements over bakkit; All plugins written in Bakkit work smoothly on this kernel. Cons: For a beginner, installation may seem complicated; You will have to install Forge separately if mods are needed.

Cauldron(previously MCPC+) - A core based on Spigot that includes Forge pre-installed. Pros: Since Forge is already pre-installed, if you want to install mods, you don’t need to install it yourself; All plugins written in Bakkit work smoothly on this kernel. Cons: New versions of Minecraft have to wait quite a long time for the build, since first the developers are waiting for the release of the updated Spigot.

Now you need to decide for what purposes you need a server and, based on this, choose the kernel on which you will develop the server. We will show the creation of a server using the example of each core.

1) First, download the server itself of the version you need:

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2) Create a separate folder for the server and copy the downloaded file.

3) Launch the server file (for a file with the *.jar extension, you need to right-click on the file -> Open with -> Java) and the console window will immediately close (* for versions above 1.6), eula.txt false on true. Save the modified file.

4) We start the server again, wait a few seconds and see that many files have appeared in the folder, including the world folder, which means the server has started normally. But you won’t be able to log in yet (unless you have a license, of course), to log in from a pirated site, open the file " server.properties" and find the parameter " online-mode=" and change the value from true on false.

5) You can enter the game, into a network game, add a new server, you can use IP "127.0.0.1" (Without quotes) or "localhost".

1) Download the server version you need:

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2) Create a separate folder for the server and copy the downloaded file there. Create a file start.bat(The simple .txt file must be renamed with the extension start.bat) with the following content:
@echo off
java-jar spigot.jar
pause
Download this file, if you don’t understand exactly how to create:

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2.1) Next, copy this file to the server folder.
Attention: Be sure to replace the line in the file spigot.jar to your server name, for example spigot-1.8.8-R0.1-SNAPSHOT-latest.jar !
To edit a file start.bat, you need to: right-click -> "Edit".

3) Launch our " start.bat", you should see the following (* for server versions higher than 1.6):

A couple of new files have appeared in the server folder, we are interested in " eula.txt", which you need to open and change the value false on true. Save the modified file.
What kind of file is this? This is a user agreement between Mojang and you, by setting the value to true you agree to all the terms of this agreement.

But you won’t be able to log in yet (unless you have a license, of course), to log in from a pirated site, open the file " server.properties" and find the parameter " online-mode=" and change the value from true to false.

What kind of online-mode parameter is this? He is responsible for checking the license of the player trying to connect to the server; if the player logs in from a pirated client, the server will not let him through.

5) Go to the game, to the network one, add a new server, entering as IP - " localhost" (Without using quotation marks).

1) Download the version of the server on which you want to play:

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2) Unpack the downloaded archive into a separate folder.

3) Run the file start.bat and you will see the following (* for version above 1.6):

4) Start the server again. We wait for the launch to complete and see the word “Done” at the end, which means everything is ok.