Has anyone used WSL2 and connected to the host machine using its actual IP instead of through the WSL2 Network Adapter IP?
My situation is this:
My ip is 192.168.1.2
I start a webserver on my actual machine, it binds to 127.0.0.1, and 192.168.1.2
I want do connect to the webserver from within a docker container under WSL2.
If I ping/telnet/curl to 192.168.1.2 the call simply fails from a timeout, this happens both from my docker container as well as straight from within ubuntu under WSL2
I have verified that I can ping my router at 192.168.1.1 from within my docker container.
I cannot access 192.168.1.2 from within my WSL2 shell outside of docker.
I cannot use 127.0.0.1 as a replacement, as the end goal is to run a setup of docker inside WSL2, that calls the webserver on my machine (i.e. I want to start up 4 services and a database through docker, and then actively develop and debug a 5 service on my actual machine).
I've tried disabling the firewall completely to no avail.
Does anyone have an idea of what it could be?
Or if I'm even supposed to be able to access 192.168.1.2 from within WSL2.
A few different ways (and things you might have to do) to make this work. You may have some of this in place already:
First, as mentioned in the comments, the best name to use (in most cases) from WSL2 when accessing a service running Windows is the mDNS format $(hostname).local (or the equivalent from whatever language you are using). This can be hardcoded as simply the Windows "Computer Name" + (concatenated with) .local.
Next, remember that the first time you try to access a network service on a port, Windows Defender Firewall will ask you for permission to create a rule. By default, this rule only applies to Private network profiles. As a result, a corresponding Block rule is created for the port on any Public network profile. I honestly just discovered this when trying this out. I don't think I knew that a corresponding Block was generated by that GUI dialog.
Since WSL's network is (oddly) considered Public, you'll need to delete that Block rule if it exists.
You'll then also need to open an Allow rule for the port from WSL. Something like:
New-NetFirewallRule -DisplayName "WSL Testing" -InterfaceAlias "vEthernet (WSL)" -Direction Inbound -Protocol TCP -LocalPort 80 -Action Allow
This will open the port on both Public and Private networks, but only on the WSL virtual interface. It will still be blocked from other machines on the network (assuming that's what you want).
Now for the bind address, you have several options:
If you really do want to bind only to the WSL virtual network, then you'll need to either obtain (or parse somehow) the correct address, since it will after each reboot (or wsl --shutdown). You can see the correct address with ipconfig in PowerShell, and look for:
Ethernet adapter vEthernet (WSL):
Connection-specific DNS Suffix . :
...
IPv4 Address. . . . . . . . . . . : 172.25.208.1
Subnet Mask . . . . . . . . . . . : 255.255.240.0
...
In this case, the bind address would be 172.25.208.1.
Alternatively, I don't believe there's much of a reason not to just bind to 0.0.0.0 (all interfaces), since the firewall is going to block connections from other networks (assuming you specified the -InterfaceAlias "vEthernet (WSL)").
However, from the comments, you also mention:
192.168.1.2 is the IP of my WiFi connection. I know the IP isn't system wide, but the webserver binds to that IP, so I need to be able to access it
If you really can't change the bind address to something else, then you won't be able to access it directly from WSL2. However, it's still possible to use port forwarding to get the packets to the right interface, if that's the case.
The easiest way to do this is to install/enable the Windows OpenSSH server, and then use something like:
ssh -L 80:localhost:80 $(hostname).local
That will make localhost:80 in WSL2 connect to the Windows service on port 80.
If you need the server name to match some virtual host name (SNI), then you can add the hostname to your Windows host file (which is mapped into WSL2 by default) as a pointer to localhost.
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I am running a local AEM server in my Windows machine. The server is running on localhost:4502. I am using Ubuntu distro running in WSL2 for my development. I want to access the localhost:4502 running in the Windows machine in my WSL2 Ubuntu.
Is there any way to do that or is it not possible ?
Short answer for most recent Windows versions
mDNS has been a feature of WSL2 for a while now. Concatenating your WSL2 hostname (or the equivalent command/function in your programming/language environment) with ".local" should get you access.
For example, from Bash, try:
ping "$(hostname).local"
For instance, if your hostname is "MyComputer", then the mDNS should be MyComputer.local.
If ICMP is blocked (as it seems to be on new Windows 11 installs), or if you want to test the connection to the actual port, then use netcat. It's available by default in the WSL Ubuntu installation, but may need to be installed in other distributions like openSUSE:
nc -zv "$(hostname).local" <portnumber>
Why localhost doesn't work
WSL2 is running with a virtual network (vNIC) that is created by the Windows Virtual Machine Platform (a subset of Hyper-V). Inside WSL2, localhost is the address of the vNIC.
What you need
WSL2 also sets up a virtual router on the Windows host to allow connectivity to both the outside world as well as the Windows host. You can see this via:
ip route
This is the address you need to use for the Windows host.
You could, of course, parse it from the route (or, as in an earlier answer, from /etc/resolv.conf), but WSL sets up a convenience mDNS (the .local domain) using the Windows "computer name", which is also used as the hostname of the WSL instance.
So concatenating $(hostname) (or it's equivalent in your programming/language environment) with ".local" should get you access.
Other considerations:
mDNS is reliant on the Windows host to resolve the name. If you have changed your /etc/resolv.conf under WSL, then this will likely not work.
Remember to open any necessary firewall ports. WSL2 is considered a separate network from that of the Windows host. Windows will consider network connections from WSL2 to be coming from an external source. (Credit to #RamilGilfanov for a comment pointing this out)
The first time a connection is made from WSL2 to a particular port, Windows Defender (if that is your firewall) will typically display a dialog asking if you want to grant access. However, in my experience, this dialog often gets buried under the main window due to timing of mouse-clicks, keyboard, etc., so it's easy to miss.
Remember to have your Windows service accept connections from remote hosts.
Many servers are configured by default to bind to localhost/127.0.0.1. Because WSL2 appears to Windows as a remote network, you'll typically need to update your configuration to bind to 0.0.0.0 or a specific address.
Note that, since the address for WSL2 changes after each reboot, it can be difficult to update your configuration each time. If at all possible, use 0.0.0.0 unless there are security concerns. Since WSL is designed for development rather than production, this shouldn't be an issue.
I was also looking for some solution to do this but currently, there is no such option available. Check out this GitHub issue:
https://github.com/microsoft/WSL/issues/4619
One solution can be this:
If you have the IP of windows(host) then it will do the job but the only problem is that IP will change every time. But, WSL2 stores your windows(host) IP in /etc/resolv.conf file. So we can modify our etc/hosts to map winhost to the IP dynamically.
Add the following lines at the end of ~/.bashrc file. This will grep the IP and modify the etc/hosts when you boot the WSL.
export winhost=$(cat /etc/resolv.conf | grep nameserver | awk '{ print $2 }')
if [ ! -n "$(grep -P "[[:space:]]winhost" /etc/hosts)" ]; then
printf "%s\t%s\n" "$winhost" "winhost" | sudo tee -a "/etc/hosts"
fi
then run the following command to reload the changes.
$ source ~/.bashrc
now you can use winhost instead of localhost in WSL2(client) to access the servers running windows(host). In your case, it will be winhost:4502 but this will work for any other use cases as well like accessing Postgres/MySQL server running on windows, etc.
NOTE: Always remember to configure your firewall on windows to allow those ports so that WSL2 can access otherwise your connection may get blocked by firewall.
You need add ipv6 rule in hosts file.
Like:
127.0.0.1 example.com
::1 example.com localhost
I had a similar problem and found the solution at this link:
https://github.com/microsoft/WSL/issues/5728
This is simple, you just need to do 2 things. set ip address to localhost in hosts file and allow windows firewall to allow incoming connections.
Here are steps by step instructions:
Get IP address, open cmd type ipconfig /all, note down ip address 172.22.16.1
Open notepad as administrator, File->open , browse to C:\Windows\System32\drivers\etc\hosts , add line 172.22.16.1 localhost, save and close.
Last option is to allow Firewall rules to accept public connections, for this open control panel > System and Security > Windows Defender Firewall > Advanced Settings > Inbound Rules > 'New Rule`
Rule Type : choose Port , click next
Protocol and Ports : type *Specific local port: 4502 , click next
Action : Allow the connection , click next
Profile : check Public , click next
Name : type AEM server , click finish
close other windows, again open cmd , type wsl --shutdown for shutdown ubuntu subsystem.
open ubuntu again.
testing connection type curl localhost:4502 in command prompt. if it returns something means you are good to go.
The easy way:
in ubuntu command line type: ip route
default via 172.23.96.1 dev eth0
172.23.96.0/20 dev eth0 proto kernel scope link src 172.23.97.122
In your app, config the host to: 172.23.97.122
Now you can access using Windows Browser
This really belongs on another forum, but I suspect you could do this.
Step 1. Run your AEM server on your actual IP address (or all addresses) instead of binding to just localhost.
Step 2. Your Ubuntu WSL client instance won't share localhost with the host machine, but it will share the local IP address your machine actually has (e.g. 10.0.0.2). Just have your client connect to that IP address instead of localhost.
I don't know anything about AEM, but you might need to secure it if you are exposing it to a larger network. Block port 4502 on the upstream firewall or use a Windows Firewall rule to only allow incoming on port 4502 from your own IP address. This certainly appears possible.
Windows 10 considers localhost as ::1
Ubuntu considers localhost as 127.0.0.1
So solution is to create a mapping
create a file called .wslconfig in C:\Users<your_username>.wslconfig
add the following to it.
[wsl2]
localhostForwarding=true
PS: I dont know if it mess up anything else but it helped me run django servers which were broken after upgrading to wsl2
I have windows server installed in a vmware with domain configured. I had configured a website in iis and kept network adapter as bridged in vmware and is able to access website outside vmware on my local computer.
Problem is when i change my network on local server, we are not able to access website because earlier network range configured was different. For eg : first time it was in 192.168.Xx.XX series after changing network entire ipaddress of local computer got changed to 10.02.XX.XX
Need to know how we can achieve this.
You can assign another VM adapter to Local server and assign him static IP of your subnet or add a second IP to exiting network Adapter. After adding static IP of your subnet to local server, you can assign this IP to you IIS site and can access it from all of your network.
You can also configure NAT/bridge connection again on your server Vmware network adapter as you did earlier (what is the issue?).
If you dont want to assign ip of your local network to server vm, you can also assign second ip address to your host machine network adapter( If clients are not many).
you should also adjust the website's or VM's ip matching your network segment.
so if your network subnet is already 10.x.x.x change your websites ip to 10.x.x.x . or if you dont want to change your website's ip then you should configure routing or NAT
i'm using Docker for Windows with Hyper-V
I want my containers to be accessible in my local network (192.168.0.0/24) with their own IP (for example 192.168.0.53 and 192.168.0.54), i've tried to change networks Hyper-V settings ('DockerNAT') to 'external' , but my containers are only accessible in my office with my host's ip (192.168.0.90).
How can I do that simple thing (without reverse proxy)?
You can add more IP to the windows DockerNAT interface.
Then bind your container ports to one IP from DockerNAT int.
You will need different IP range then yout current IP 192.168.0.0/24.
For example you can use 192.168.1.0/24 by assingning IP 192.168.1.1.
How to add more IP to one network interface:
http://tunecomp.net/windows-10-multiple-ip-addresses/
Then simply bind ports like this.
ports:
- 192.168.1.1:80:80
You will have htpp on default port on 192.168.1.1 :-)
Drawback: you will need a sign that second IP every time after Docker restart.
Is it possible to access 127.0.0.1:8080 publicly i have a project application that is running on VM, What should I do?
Diagram:
VMachine( where xampp is installed) IP <-> Global(external) IP (167.1.174.21:8080)
I don't have any option left what should i do i'm really new to this. #respect
Yes, this is possible but there are multiple steps to the configuration and the details for each steps differ depending on the hardware/software used. In general though it can be accomplished like this:
VMware config
Configure the VM with a bridged network
Configure the guest OS to either have a dhcp reservation or static ip.
Router config
Add a dhcp reservation for the VM (if using DHCP)
Add a port forwarding rule pointing to the VM's IP address
XAMPP config
Make sure the XAMPP server is listening on all interfaces.
The key point is to make the Virtual Machine to have bridged connection.
You can do it by looking at this one.
After that do a Port Forwarding to the virtual machine like it a real machine on your LAN.
Step 1 : Apart from above solution, in your local network where xampp is installed, make your local ip as static one, like "192.168.1.125" from router settings->Address reservation option.
Once you reserve address
Step 2 : Open your router->port forwarding->set port & ip to forward.
Step 3 : Now you check your public ip, and bingo now you can go to your public ip from vmware or from any other network.
As long as the vm has a configured network and is therefor able to communicate with your LAN (using Bridged networks in the VM configuration is a good way to go) and the internet, it is possible to make it accessible to the external web/internet.
Therefor you would most likely need to define a port-redirect/port forwarding on your router, that all incoming packets on the external IP (167.1.174.21) on port 8080 gets forwarded to the local ip of your vm and the related xampp session.
A possible problem at that point might be changing IP addresses of the VM based on a possible DHCP configuration. Either use a fixed IP on the VM or configure some mac-based rule for fixed IP or increase the lease time of the dhcp-server (your router to unlimited)
That's the theory, but please think twice before you do so. Running a webserver which is available in the wild is not recommended if you are not used to IT security. And even if you decide to do so, using xampp sounds wrong to me ears. xampp is designed for local development & testing purposes, not for productive use.
I developed a client/server simulation application. I deployed client and server on two different Windows XP machines. Somehow, the client is not able to send requests to the server.
I tried below options:
Pinged server machine successfully from client using ip-address.
Pinged client machine successfully from server using ip-address.
Checked netstat command line tool from both machines. Server is in LISTENING mode and client is in SYS_SENT mode. But the foreign address it is using to send is host name not the ip address.
Pinged server machine unsuccessfully using host name from client.
Pinged client machine successfully using host name from server.
I feel the problem is when the client is trying to connect to the server using the host name.
Could you please let me know how to force an application to use an ip address instead of a host name? Is there any other way to map the host name to an ip address?
Go to your client machine and type in:
nslookup server.company.com
substituting the real host name of your server for server.company.com, of course.
That should tell you which DNS server your client is using (if any) and what it thinks the problem is with the name.
To force an application to use an IP address, generally you just configure it to use the IP address instead of a host name. If the host name is hard-coded, or the application insists on using a host name in preference to an IP address (as one of your other comments seems to indicate), then you're probably out of luck there.
However, you can change the way that most machine resolve the host names, such as with /etc/resolv.conf and /etc/hosts on UNIXy systems and a local hosts file on Windows-y systems.
Try tracert to resolve the hostname. IE you have Ip address 8.8.8.8 so you would use; tracert 8.8.8.8
You could use a C function getaddrinfo() to get the numerical address - both ipv4 and ipv6.
See the example code here
This is hard to answer without more detail about the network architecture. Some things to investigate are:
Is it possible that client and/or server is behind a NAT device, a firewall, or similar?
Is any of the IP addresses involved a "local" address, like 192.168.x.y or 10.x.y.z?
What are the host names, are they "real" DNS:able names or something more local and/or Windows-specific?
How does the client look up the server? There must be a place in code or config data that holds the host name, simply try using the IP there instead if you want to avoid the lookup.
Windows XP has the Windows Firewall which can interfere with network traffic if not configured properly. You can turn off the Windows Firewall, if you have administrator privileges, by accessing the Windows Firewall applet through the Control Panel. If your application works with the Windows Firewall turned off then the problem is probably due to the settings of the firewall.
We have an application which runs on multiple PCs communicating using UDP/IP and we have been doing experiments so that the application can run on a PC with a user who does not have administrator privileges. In order for our application to communicate between multiple PCs we have had to use an administrator account to modify the Windows Firewall settings.
In our application, one PC is designated as the server and the others are clients in a server/client group and there may be several groups on the same subnet.
The first change was to use the functionality of the Exceptions tab of the Windows Firewall applet to create an exception for the port that we use for communication.
We are using host name lookup so that the clients can locate their assigned server by using the computer name which is composed of a mnemonic prefix with a dash followed by an assigned terminal number (for instance SERVER100-1). This allows several servers with their assigned clients to coexist on the same subnet. The client uses its prefix to generate the computer name for the assigned server and to then use host name lookup to discover the IP address of the assigned server.
What we found is that the host name lookup using the computer name (assigned through the Computer Name tab of the System Properties dialog) would not work unless the server PC's Windows Firewall had the File and Printer Sharing Service port enabled.
So we had to make two changes: (1) setup an exception for the port we used for communication and (2) enable File and Printer Service in the Exceptions tab to allow for the host name lookup.
** EDIT **
You may also find this Microsoft Knowledge Base article on helpful on Windows XP networking.
And see this article on NETBIOS name resolution in Windows.