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I'm wondering if its possible to host a Minecraft server on my PC and have my wife connect to that server without any internet connection. We are willing to get a router/modem or switch if need be. We just can't use internet and need instructions on what to get, how to set it up, and how to use it. My hope is that it is possible to have our computers in the same room, plug our PCs into a router that has no internet service via Ethernet cables, turn on the server on my PC, my wife can type in the IP and we can play together.
Yes you can. I am running a Minecraft server on a separate Linux machine, and me and my brother connect to the Minecraft server from separate computers, all of it from our own wireless LAN and without an Internet connection.
We are using a WiFi router that is not connected to the Internet, the computer running the server is an old laptop, and then we have two additional computers, each running an instance of Minecraft, and it all works fine.
I'm not sure about using only a network switch, because you need to be connected at the IP layer, since you need to specify the internal, private IP address of the computer running the Minecraft server from the Minecraft client in order to join.
So in a nutshell, you will need to download and install the Minecraft server, install the latest Java OpenJDK, run the Minecraft server, read the eula, and last in order for this to work completely offline (that is, we want this to work without an Internet connection), you will need to go into the Minecraft server configuration file, locate the property of online-mode=true and set it to online-mode=false.
This setting basically controls whether or not players authenticate to Mojang's servers before they connect to your server, and it prevents players with cracked clients from connecting to your server, but since you will be hosting and joining from within an internal, private network anyways it does not matter. No one will be connecting to your server from the outside world if there is not a connection to the Internet anyway.
For more details about how to install and run a Minecraft server, there are many guides out there. It's actually pretty simple, if you're comfortable using a console screen and know just a little bit about IP addresses and editing a configuration file with a text editor. For me, I run the Mi ecraft server and I was able to connect to it with my brother and start playing right away, without having to mess around with the server at all.
So there you have it, I hope this helps someone.
The very definition of a server is something that provides resources over the internet:
A server is a computer program or a device that provides functionality for other programs or devices, called "clients", over the Internet.
There is a way that would work the way you intend, but without Ethernet, it runs over WiFi. Go into a world, open the Pause menu, and click Open to LAN. Then you can go to a server menu on another computer and it will show up in the LAN Worlds section. However, this will only run vanilla gameplay.
Just FYI, this question would be considered off-topic here and should be asked in the Gaming or Networking communities.
EDIT: Opening to LAN would work over ethernet too.
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In my company's physical office, there is no domain controller setup, just a bunch of computers ranging from Windows XP to Windows 10 that are all part of the same workgroup in the same LAN. These computers can access shared folders on other computers in the network by logging with user accounts that exist on those computers. With me so far?
Problem: I've set up a VPN through the router (netgear router with openvpn client), and I can see the shared folders on "Most" computers. I'm using Windows XP Professional, and inside the VPN I can access computers that are Windows XP or newer. I'm getting a local IP address from the router's DHCP and all that seems perfect. But I'm having I'm having problems accessing Windows 2000 computers. I try to log in and receive the error "STATUS_LOGON_FAILURE". I'm typing the correct username and password, and just can't figure out why it's not working.
I'm using Wireshark to analyze the packets and can't really see anything in there that is that much different in the SMB communication between these machines, and I'm not really sure where to start. Since XP machines in the same office behind the same router can access Windows 2000 machines, but I can't through the VPN, it seems the problem might have something to do with that. Any tips on how to trouble-shoot this?
Thanks!
I found the solution. It had to do with this registry setting:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\lmcompatibilitylevel
On all machines in the office, this value was set to 0. If I set mine to 0, I can login fine. Of course, the REAL problem is that 0 seems pretty out-dated and insecure, so now I'll need to review whether all the old machines in the office can support a NTLMv2 so I can update that, but that's a different issue. So this is SOLVED.
I'm working on project to develop an software using the TCP/IP protocol. The basic function of the software is to access the client activity running on client machine from server machine, for example information about current running applications.
Also, I want to access desktop screen and mouse from client machine to server machine using TCP/IP protocol. What are the basic steps that I can follow to access the desktop and could handle client mouse from server machine using TCP/IP.
It sounds like you want to build a VNC or RDP -like program. There have been an explosion of these services/programs in the time since you asked the question, though I don't know how many might be open source. I would start by investigating an Open Source VNC client and then see about adding an encrypted tunnel to keep the connection secure.
UltraVNC and TightVNC are popular Open Source VNC clients.
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How may I create a socket on my computer that could be reachable from other computers via internet, and work like a web server, maybe using WebSockets?
By the way: could my web server become visible from the Internet and how?
I know I can install a LAMP web server on my computer (my OS is Ubuntu) and use it for a local network.
I know I can use sockets to let 2 computers communicate via internet using their IP addresses (I did it in Java).
You can make your LAMP server stack accessible from the internet by forwarding ports from your external internet connection to the computer the server stack is running on. If you're doing this at home, you can usually handle port forwarding from the admin interface for your router/modem.
Alternatively, WebRTC is a newer web technology (still in the testing phase) that allows two browsers to connect to each other without the need for an intermediate web server.
Browser does not permit raw sockets.
You can not create a socket from browser, because it would be security hole.
For example you download a page from internet and script on this page opened all sockets on your computer.
Websockets it is technology on top of TCP protocol.
Using Websockets you can connect two browsers to a Websocket server and exchange information via this server.
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How do I allow any device, e.g., iPhone, to connect over a WLAN to my Mac's localhost server?
On my Mac, I'm running a "Hello World" HTTP Node.js server that serves a page, which Safari opens successfully, at http://localhost:1337. And, running ipconfig getifaddr en1 in Terminal outputs 192.168.1.9.
But, Safari, on both iPhone & Mac, displays "Safari can't connect to the server" when it tries to open http://192.168.1.9:1337.
I don't think this should involve port forwarding because I only want the HTTP server to be available privately, not publicly.
Related:
Accessing localhost from iPhone (in same network)
https://superuser.com/questions/308451/connect-to-localhost-from-another-computer
https://superuser.com/questions/400752/can-we-run-local-server-over-local-network-without-internet-access
https://serverfault.com/questions/254947/accessing-localhost-xampp-from-another-computer-over-lan-network-how-to
I had the same problem. I turned off my WI-FI on my Mac and then turned it on again, which solved the problem. Click Settings > Turn WI-FI Off.
I tested it by going to Safari on my iPhone and entering my host name or IP address. For example:
http://<name>.local or http://10.0.1.5
Have your server listen on 0.0.0.0 instead of localhost.
I was only able to access my iphone using http://name.local:1337. You have to add the ".local" You can find your computer name under System Preferences/sharing/"Computer Name".
Try enabling Internet Sharing:
Open System Preferences -> Sharing.
Check Internet Sharing to turn it on, it will prompt you to confirm your action, select ok.
If your iPhone is connected using USB, the iPhone USB is checked at the "sharing your connection" list on the right side.
After this, try accessing your local server using your macs ip on wifi.
My problem was the same, but the solution had to do with changing a firewall setting. It turned out that node was set to block incoming traffic. I knew something was up because I used to be able to get to my localhost server from my phone.
Go to System Preferences -> Security & Privacy -> Firewall -> Firewall Options, and then scroll down until you find node and make sure node's setting is set to Allow incoming connections.
After changing the setting, I could reach the localhost server (port 3000) running on my Mac by going to http://192.168.1.11:3000
I solve a similar problem.
connected Mac and iPhone to the same Wi-Fi
change the iPhone Wi-Fi setting, set http proxy to manual and change the Server to you Mac ip address and setting the Port. My Port is 80.
you can input http://<Mac ip>:<your customer server port> in iPhone's safari
MacOS Sierra users can find their auto-generated vanity URL by going to System Preferences > Sharing and checking beneath the Computer Name text input. To access it, enter this URL, plus your port number (e.g. your-name.local:8000), on your iPhone over the same Wi-Fi connection as your computer.
make sure you phone and mac machine both connected to the same wifi and you good to go your http://<machine-name>.local
Connect your iPhone to your Mac via USB.
Go to Network Utility (cmd+space and type "network utility")
Go to the "Info" tab
Click on the drop down menu that says "Wi-Fi" and select "iPhone USB" as shown here:
You'll find an IP address like "xxx.xxx.xx.xx" or similar. Open Safari browser on your iPhone and enter IP_address:port_number
Example: 169.254.72.86:3000
[NOTE: If the IP address field is blank, make sure your iPhone is connected via USB, quit Network Utility, open it again and check for the IP address.]
I suggest to use the name of the computer, e.g.http://mymac:1337/. Works for me perfect without any configuration required and I don't have to care about changing IP addresses due DHCP.
As posted I followed moeamaya's answer but needed to modify it just a bit to see my work in the Sites directory.
http://[name].local.~[username]/
[name] is as stated already (System Preferences/sharing/"Computer Name")
[username] is found at:
/etc/apache2/users/username.conf
hope this helps!
Tried everything on this page, but http://<name>.local:<PORT> only worked on my iPhone after I quit and restarted Safari...
Always use the IP that is shown in your Network settings. It changes when you change location and you use another wireless connection.
For example in my case now it is: 10.0.0.5
also, make sure the server is listening for ur mobile device! for example, by default jekyll only answers requests made by the host machine. this solved my problem:
Connect to a locally built Jekyll Server using mobile devices in the LAN
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I am developing an application that query to the server. In my Mac, I use the hosts file to change the dns to point to a local server within my local area network.
Now I need to test it with my iPhone, the problem is that my iPhone does not recognize that server due to the missing configuration for dns.
On my Mac or Windows, I simply add: 192.168.0.20 http://www.google.com to the hosts file.
Now how do I let my iPhone know the URL: http://www.google.com ?
Another option here is to have your iPhone connect via a proxy. Here's an example of how to do it with Fiddler (it's very easy):
http://conceptdev.blogspot.com/2009/01/monitoring-iphone-web-traffic-with.html
In that case any dns lookups your iPhone does will use the hosts file of the machine Fiddler is running on. Note, though, that you must use a name that will be resolved via DNS. example.local, for instance, will not work. example.xyz or example.dev will.
This doesn't directly answer your question, but it does solve your problem...
What make of router do you have? Your router firmware may allow you to set DNS records for your local network. This is what I do with the Tomato firmware
Not programming related, but I'll answer anyway. It's in /etc/hosts.
You can change it with a simple text editor such as nano.
(Obviously you would need a jailbroken iphone for this)
I just edited my iPhone's 'hosts' file successfully (on Jailbroken iOS 4.0).
Installed OpenSSH onto iPhone via Cydia
Using a SFTP client like FileZilla on my computer, I connected to my iPhone
Address: [use your phone's IP address or hostname, eg. simophone.local]
Username: root
Password: alpine
Located the /etc/hosts file
Made a backup on my computer (in case I want to revert my changes later)
Edited the hosts file in a decent text editor (such as Notepad++). See here for an explanation of the hosts file.
Uploaded the changes, overwriting the hosts file on the iPhone
The phone does cache some webpages and DNS queries, so a reboot or clearing the cache may help. Hope that helps someone.
Simon.
It might exist, but you cannot change it on a non-jailbreaked iPhone.
Assuming that your development webserver is on a Mac, why don't you simply use its Bonjour name (e.g. MyMac.local.) instead of myrealwebserverontheinternet.com?
Don't change the DNS on the phone. Instead, connect with wifi to the local network and you are all set.
At my office, we have internal servers with internal DNS that are not exposed to the Internet. I just connect with iPhone to the office wifi and can then access them fine.
YMMV, but instead of configuring the phone DNS, it feels to me that just setting up local internal DNS and wifi is a cleaner and easier solution.
In case anybody else falls onto this page, you can also solve this by using the Ip address in the URL request instead of the domain:
NSURL *myURL = [NSURL URLWithString:#"http://10.0.0.2/mypage.php"];
Then you specify the Host manually:
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:myURL];
[request setAllHTTPHeaderFields:[NSDictionary dictionaryWithObjectAndKeys:#"myserver",#"Host"]];
As far as the server is concerned, it will behave the exact same way as if you had used http://myserver/mypage.php, except that the iPhone will not have to do a DNS lookup.
100% Public API.
No, an iPhone application can only change stuff within its own little sandbox. (And even there there are things that you can't change on the fly.)
Your best bet is probably to use the servers IP address rather than hostname. Slightly harder, but not that hard if you just need to resolve a single address, would be to put a DNS server on your Mac and configure your iPhone to use that.