SSH from Virtualbox Guest to DynDNS address - networking

I have Windows 10 as host with a Manjaro installation as Guest on Virtualbox.
I have set a Debian server on another house with ssh installed. I have setup a dyndns on Debian's network so I can access it remotely.
For example..
From address 12.34.56.78 I ssh to foo.dyndns.org:1234. This port redirects me to 192.168.1.5:22 always as this is my Debian machine and the connection is established. I am able to do this from Windows 10 as well as my android and any other device in 12.34.56.78 or by 3G.
But..
When I try to do this
$ ssh foo.dyndns.org:1234
from the Manjaro Guest in Virtualbox I get the following error:
ssh: Could not resolve hostname foo.dyndns.org:1234: Name or service not known
So I did ifconfig and I saw my inet address was 10.0.2.15. I changed virtualbox's network adapter from NAT to Bridged so I can get a lan ip and I got the host's ip, 192.168.2.4. So I gave it another try and still didn't work.
Also, if i try to connect from vm to server while I'm in the same network
$ ssh user#192.168.2.5:22
it works. In this case virtualbox's network adapter was NAT.
This command works if I try from my android (connectbot).
I can connect the same way from PuTTY from Windows.
So my questions are:
Can it be done?
If so, how? (and why?)
Can a VBox Guest get lan ip that's not the same as the host's?
Is there any more information I should provide?
I have searched for a couple of days in here and on google and all I found where solutions on how someone can ssh INTO a vm. No one (from what I saw) asked the opposite.

Checking manual page for ssh reveals the format of command-line options:
ssh [...] [-p port] [...] [user#]hostnamessh
This simply describes, that you need to change
ssh foo.dyndns.org:1234
to
ssh -p 1234 foo.dyndns.org
if the domain resolves correctly to the ip address.

Related

How to do port forwarding on VMWare Player 14.1.2 (Ubuntu 18.04 guest, Windows 10 host)?

I have a VMWare Player (14.1.2 build-8497320) running a Ubuntu 18.04 guest on a Windows 10 host. The Ubuntu guest has a LAMP stack that runs a few web applications. I am using NAT to connect the Ubuntu guest to the Windows host's network.
I can access these applications by using the local IP address of the guest (e.g., http://192.168.80.128/mediawiki) from my Windows host. But I want to access it like so from my Windows host: http://localhost/mediawiki. I think this should be possible if I can forward the port 80 of my Ubuntu guest to that of the Windows host.
How do I make this happen please? I don't have access to VMWare Workstation and its Virtual Network Editor.
Edit: I should probably add the motivation for wanting to do this. Basically, I want to avoid figuring out the IP address of the virtual machine everytime I access the web applications.
The (further) reason is that the local IP address of the Ubuntu guest might (I suspect) change, and that will affect quite a few things, such as the base URLs configured in the webapps' configuration files (e.g., the $wgServer variable in LocalSettings.php of MediaWiki).
VMWare Player supports port forwarding over NAT natively:
In the file C:\ProgramData\VMware\vmnetnat.conf put under section [incomingtcp] a line like:
80 = 192.168.80.128:80
Then restart the VMWare NAT Service :
net stop "VMWare NAT Service"
net start "VMWare NAT Service"
Source/credits: https://hitchhikingtheweb.wordpress.com/2014/09/02/portforwarding-with-vmware-player-and-nat/
Also: VMWare documentation of this
You can do it using SSH Tunneling for example.
From windows you open a tunnel from the windows port 80 to the ubuntu port 80.
You can do it using Putty on Windows and having the ssh deamon running on ubuntu, which I guess you should already have.
There are many tutorials on how to do this.
I'll add just one link, but you can always google it and find one that suites you.
Portforwarding with SSH (Putty)
For the possible changes in the guest’s ip:
If you can’t fix the ip in settings then perhaps you can edit the windows hosts file and add a host name for the current Ubuntu ip. Then build the urls using the host name. If the ip changes you change it in the hosts file.

my guest can't get ip form my network dhcp?

i set below configuration for guest
image description here
but after set it and restart my guest, it can't get IP from my network DHCP!!!!
how can i solve it?
The network settings on virtualbox look good, as long as the interface is correct.
What is the guest os?
Have you tried the following on the vm?
if windows: run ipconfig /release then ipconfig /renew on cmd, or run diagnostics on the interface. You can also try to disable and enable the interface. If nothing works, try setting up a static IP in the same subnet as the dhcp server and check if the server is reachable via ping (if it's not, troubleshoot your network).
if linux: dhclient [interface], also check if the interface is set to static or dhcp, set the correct mode otherwise you will have to run dhclient again if you reboot or shutdown the vm

Get IP of VM running on an Ubuntu server configured on bridged networking

I want to set up an exported VM on an Ubuntu Server using VirtualBox on headless mode.
I have the VM up and running and bridged with the ethernet interface of the host (em1), so the dhcp of the host should now assign an IP to the VM if I'm not mistaken.
Is there a way to check if this is working and if yes to get the VM's IP?
Since this is on headless mode so without GUI, the only way to login to the VM is through ssh and for that I need the IP..
welthenwel,
you can do this with VBoxManage.
from a shell, just type:
VBoxManage guestproperty enumerate VM_NAME --pattern */IP
and you will get as response something like in the below image.
now, ignore the fact that I run this cmd from a Windows host, because its behaves exactly the same from inside a linux host
I'm not very familiar with VirtualBox. Bridged with VMWare Workstation meant the IP is given by your default DHCP server, which means you could look up the assigned IP address there (e.g. your router - if you have access to it).
Another option would be a ping sweep of your network segment as I believe Ubuntu doesn't drop ICMP requests.

Virtualbox -- configuring two VMs to talk to each other / host and internet

Host: Windows 7 running lastest VBox + Extension pack
Vm1: lubuntu 3.10
Vm2: Ubuntu server 12.04.3
Problem: Can't get VMs talk/ping each other AND ping the internet at the same time
NAT: VMs have same IP, using ping/ssh is like checking connectivity/connecting to self, lol; can ping internet, can't ping each other
Bridged: VMs get unique IP; can ping each other, not the internet
Host-only: VMs get unique IP; can ping each other; not the internet
Internal network:
intnet, needs to be defined/added to windows 7, however, window 7 not accepting VBOXMANAGE add command, giving errors. VMs wait for network configuration, another 60 seconds and start without a network.
What else can I do?
Change VM to use NAT Network, generic driver... ???
edit /etc/network/interfaces?
change route?
use squid?
Following Lubuntu Networking Message pops up in Lunbutu GUI:
network service discovery disabled
your cuurent network has a .local domain which is not recommended and incompatible with the avahi network service discovery the service has been disabled.
Can anyone help?
Refresh your MAC address using Virtual Box machine settings and remove the kernel’s networking interface rules file so that it can be regenerated:
sudo rm -f /etc/udev/rules.d/70-persistent-net.rules
sudo reboot
It will work for your clone VM.

VirtualBox port forwarding not working with NAT adapter

I'm trying simple port forwarding with VirtualBox and it appears VirtualBox.exe is listening on the host to the port, but not actually forwarding the connection to the guest. I've tried on multiple ports, and I've restarted VirtualBox several times. Guest to host connectivity, on the other hand, is fine. Here's the info:
Host: Win7 x64
Guest: Win7 x64
VirtualBox version: VirtualBox 4.2.10
Firewalls: All firewalls on host and guest disabled.
Virtual Box > Machine Settings > Network
Adapter 1:
Attached to: NAT
Cable Connected : True
Port Forwarding:
Rule 1: TCP, HostIP=127.0.0.1, HostPort=8081, GuestIP=127.0.0.1, GuestPort=8081
On Host:
[VirtualBox.exe] TCP 127.0.0.1:8081 IBM-6KT5OPCF76P:0 LISTENING
On Guest:
I never get the connection request on port 8081 or any others I've tried.
Any ideas? I'd like to avoid using VirtualBox's bridged adapter for multiple reasons. I was under the impression that NAT port forwarding was relatively straightforward with VirtualBox.
Thanks!
Paravirtualized Network* (virtio-net) is the key
select your vm that you want for port forwarding.
NOTE: Make sure the vm is in stop mode.
Select “Settings"
Select “Network"
Select any free Adapter. Lets say "Adapter 2"
Enable "Enable Network Adapter"
In Attached to dropdown, select "NAT"
Select "Advanced"
In Adapter Type: Select “Paravirtualized Network (virtio-net)” [ This is important ]
Select “Port Forwarding"
In Right hand part of the “port forwarding” dialog box, select “+"
Provide the
Name: Anything you want. example for ssh, say “ssh"
Protocol: Type of protocol [ for ssh: TCP ]
Host IP: provide hostname from which host you want to connect to [ over here: 127.0.0.1 ]
Host Port: On what port of that Host you want to connect to remote port [ example: 60022 ]
Guest IP: Leave it Blank
Guest Port: To what port you want to connect from the above host. [ for ssh, the default 22 ]
You've pointed guest ip in wrong manner it should be ip of guest (if you're statically assign ip address to guest) or leave it empty. Note you're pointed host ip as 127.0.0.1 it means that port you're forwarding will be accessible only from port (if it isn't what you're desired it should be empty as well).
VBoxManage modifyvm "win" --natpf1 ",tcp,,8081,,8081"
perhaps this is something you've wanted to do. (please look here for more details)
It is not clear which guest OS you are using.
I have faced the same problem.
My host was MAC PC and guest was CentOS 7 on VirtualBox.
I enabled the NAT port forwarding from guest to host at VirtualBox level for both ssh port 22 and http port 80.
However I found that I could not connect to the Apache HTTP server on Centos 7 guest from my MAC PC host on http connection.
To fix it, I have to set the firewalld service to allow port 80 connections.
Faced similar issue on Mac host, Fedora guest setup. Was trying to access http web server running on port 8000 of guest machine from host machine. Opening port 8000/tcp with firewall-cmd on guest machine solved problem.
sudo firewall-cmd --zone=public --add-port=8000/tcp
I faced a similar issue and it turns out to be unsigned drivers in the network stack installed by some corporate proxy interception software called proxycap that were causing virtualbox to error when setting up port forwarding. Check you VM machine logs for the error message while setting up port forwarding and listing the unsigned drivers and uninstall the corresponding application.
I connect to my Centos7 like this:
Virtual Box > Machine Settings > Network
Adapter 1:
Attached to: NAT
Cable Connected : True
Port Forwarding:
Rule 1: TCP, HostIP=127.0.0.1, HostPort=8081, GuestIP=10.0.2.15, GuestPort=8081
$> ssh -p8081 [change]#127.0.0.1
In case someone else met same problem with me, I wrote my mistake here:
I am using CentOS 7 as host and Windows as guest.
The only problem block me was: I forgot to disable Windows firewall settings in guest machine. Once disable it, everything works fine.
If anyone is having same issues, try to uninstall redirectors such as ProxyCap, proxifier, etc. VirtualBox NAT doesn't work with them. You won't find any error message in the logs and you won't see anything in the pcap file if you try to trace VirtualBox networking. Disabling ProxyCap is not enough, it has to be uninstalled or you need to reset your network config with "netsh winsock reset" but ProxyCap won't work for you anymore.
For GNU/Linux users, don't forget the first 1024 ports are restricted to the root user…
If you try forwarding a port lower than 1024, it won't even appear as LISTENING with netstat.
In my case the guest OS is CentOS8, the host OS is Ubuntu 22.04, the forwarded port was 1022 on the host, I changed it to 10022 then it worked.

Resources