Ubuntu Networking :: Setup A Virtual Machine On It Using Vmbuilder?
Jun 8, 2010
I am using Ubuntu 10.04, 64-bit. I am trying to set up a virtual machine on it using vmbuilder. As I understand, I need to set up bridging. If I set up br0, then I cannot get out of the machine. Even a ping to 192.168.1.1 (my gateway) comes back as network unreachable. If I comment out #auto br0, then I can get out (on eth0), but i get an error from libvirt. My /etc/network/interfaces file (eth0 networking works, but libvirt does not):
#auto eth0
#iface eth0 inet dhcp
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.154
netmask 255.255.255.0
[Code]...
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Dec 3, 2008
I have ubuntu-8.04.1-server installed on virtual machine. It works perfect. Now, I made copy of this virtual machine. I started that copied machine and it works fine, except one thing: network does not work!
I have several others VMs with freeBSD, openBSD or Windows on it, but only ubuntu machine hes network problem after coping. I tried some other VM with ubuntu on it - same problem! I downloaded VM with ubuntu - same problem.I take a look into /etc/network/interfaces file and it looks just as it should (same as before coping) but ifconfig command returns parameters for lo only (before coping there was eth0 and lo).
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Feb 24, 2011
I'm trying to setup and configure a server entirely with text only run mode 3 on a virtual machine so I can redo my current live server. I'm now trying to set up the firewall of the system using iptables. I've read up on it and came up with the following:
-clear all rules
#iptables -F
-set default policy rules
#iptables --policy INPUT DROP
#iptables --policy FORWARD DROP
[Code]....
Everything above worked for me but just out of interest I looked at my live server which was configured using a GUI. I ran iptables-save and it was pretty much the same but its port open lines read like this:
#iptables -A INPUT -p tcp -m state --state NEW --dport 80 -j ACCEPT
so finally my question is do I really need the "-m state --state NEW"? Wouldn't having that drop established connections on those ports? I'm just confused as to what exactly the NEW state is doing and would it make a difference if I didn't include it.
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May 29, 2010
I can set-up an ssh tunnel from machine A to Machine B:-
fred@my-linux:~$ ssh -P myport fred@myserver.homelinux.com
I can successfully logon to machine A to Machine B.
what address and port will my tunnel 'appear' on machine B? I want to send a stream back from B to A up the encrypted tunnel, not over the open network.
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May 27, 2010
I have installed CentOS on a VMwareWorktation and that CentOS, i also install VMware Server (suscess) and setup a guest OS that, but i start this Guest OS, an error show "You may not power virtual machine in virtual machine"...
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Jun 16, 2010
I have a 10.04 on virtual machine (VMWare) Network card is bridged. I wanted to change the connection from DHCP to static IP. Tried both ways already:
[Code]....
The connection is established and ifconfig shows the correct IP, but nobody can ping me and i cannot ping anybody!! I have no connection to the internet.
Code:
vm_ll@me:~$ ifconfig -a
eth1 Link encap:Ethernet HWaddr 00:0c:29:e6:87:69
indirizzo inet:10.1.1.45 Bcast:10.1.1.255 Maschera:255.255.255.0
indirizzo inet6: fe80::20c:29ff:fee6:8769/64 Scope:Link
[Code].....
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Mar 6, 2011
I am a linux beginner and dont know that much about networks! I have access to a linux VM. The machine is remote and i access via putty. If i can access this machine via SSH and putty, is there any reason why i should not be able to use ssh tunnelling to connect to a vnc server?
I don't know the details of the server and what firewall is set up but i believe that tunnelling uses port forwarding over the ssh connection that is already set up. Where does the port forwarding actually occur? At the actual linux VM or on the router the VM is connected to?
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Feb 21, 2010
I installed a minimal ubuntu (minimal.iso) on a virtual machine (vmware) on my windows pc using following packages:
Code:
sudo apt-get install install gnome-core gdm network-manager-gnome human-theme x11-xserver-utils tangerine-icon-theme gnome-themes-ubuntu ubuntu-artwork jockey-gtk gnome-utils firefox
I'm using the Ubuntu VM as my local http server. It is reachable via ip - so http://IP-ADDRESS works. I also use samba for shared folders... but ubuntu is not listed in my network. What means that i cannot access files from outside the vm. Do I have to install further packages, because "normal" ubuntu distributions are listed in my network connections. Samba packages are correctly installed.
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Jul 7, 2011
I am currently running ubuntu on a qemu-kvm virtual machine, and the host is fedora. I would like to mount a folder of the host machine on my VM, but never succeeded. The result of the command is :
root@armnlib-kvm:~# mount -v 192.168.1.10:/nfs /nfs
mount: no type was given - I'll assume nfs because of the colon
mount.nfs: timeout set for Thu Jul 7 06:02:43 2011
mount.nfs: text-based options: 'addr=192.168.1.10'
[Code]....
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Mar 17, 2011
I've forwarded incoming connections on port 25 to my virtual machine with the following commands:
sudo iptables -t nat -A PREROUTING -p tcp -i eth0 -d 10.1.1.3 --dport 25 -j DNAT --to 192.168.56.101:25
sudo iptables -A FORWARD -p tcp -i eth0 -d 192.168.56.101 --dport 25 -j ACCEPT
The strange thing is the connections coming through in the virtual machine seem to be getting dropped. A port scan from the internet says the port is closed, but it is not the case as I can see the connection coming through. As you've probably worked out, I am running a mail server. When I send myself test mail, the connections from the senders mail server also gets dropped.
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Aug 28, 2010
I've a weird problem about my honeypot project. All start from installation until running process is going smoothly but when I try to ping my honeyd vm from honeyd host it couldnt but it can be ping from other machine inside my local network. I am also usinng arpd for ARP request reply and standard honeyd config.
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Oct 22, 2010
I have removed Network Manager Gnome from my Ubuntu which is a virtual machine(Guest OS),I see the internet is no more running inside this Virtual Machine.While in other Virtual Machines (Other Linux) I had not removed Network Manager Gnomeand I see internet is running fine in them.
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Apr 19, 2011
I'm running Red Hat as a virtual machine on VMWare and the network configuration on VMWare is a bridge and i have had this problem, some times does not get network o others do, i have verified code...
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Jan 28, 2010
I'm trying to ssh into a virtual installation of ubuntu I have, named "ubuntu-x86" but I can't get it to work for some reason. I have two network cards, both assigned to NAT, on the virtual machine, but one has a static IP address, while the other uses DHCP. For some reason, the command:
[Code]....
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Nov 18, 2010
I've been learning linux for a while now with half an eye on making a career out of it in future. One sizeable gap in my knowledge at the moment is networking. Is it feasible/desirable to set up a network of virtual machines to use as an environment to learn networking? My budget is non-existent so I was hoping to be able to get a basic understanding of the principles from installing a few desktops, a virtual gateway etc on VMware workstation on my laptop, and doing a lot of reading online.
Is this feasible, or will I just end up learning about virtual networks instead of real ones? Also how much power would be required, because my 3GB RAM lappy has just gone bang and all I have now is a (new) 1GB RAM lappy.
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Mar 16, 2011
I had been running my SMTP server with WINE, as the SMTP server software is a Windows-based program (MERCURY), but I cracked the shits with WINE and removed it. Now I am running my SMTP server in a Windows virtual machine.This virtual machine has a different IP address from my host machine, so what I need is for my computer (the host) to redirect incoming traffic on port 25 to the virtual machine at 192.168.56.101 on port 2525.Can someone please help me with it? I think its done with iptables.
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Feb 3, 2010
how to use CTRL-ALT-DELETE on a virtual Windows machine on my Virtual Box?
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Jan 2, 2011
How do I program a virtual machine to auto-start/boot upon boot up of the host system? I am experimenting with SNORT network intrusion detection system and have installed it inside a virtual ubuntu box which I want to start automatically.
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Jul 27, 2011
I am a newbie trying to enable virtual hosting and run it on a local machine without fqdn. I checked the http://9.9.9.92/ (my IP address) site and saw my (default) page. I would like to virtuly host a asdf.com If virtualy hosting is setup properly - how do I access the new setup? Just type http://asdf.com ? or is there more to it?
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Jul 6, 2010
I have a problem with my wired connection. The problem started when I tried and failed to install vmware virtual machine.... now I have no internet connection at all that I can see. This is output of:
ifconfig
eth0 Link encap:Ethernet HWaddr 90:e6:ba:97:64:f0
inet6 addr: fe80::92e6:baff:fe97:64f0/64 Scope:Link
[code]....
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Jan 3, 2010
I read once that you could use VMWare's converter to convert a physical machine into a virtual machine to run in VirtualBox. Can someone point me in the direction of a tutorial or just give me instructions on how to do this? I was very confused by the converter and how to get the image to work with virtualbox.
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Aug 14, 2010
Can I copy my virtual box VM windows XP virtual-machine files to another Linux computer and run the machine on that computer while I keep on running it on the original computer?
This question is about technical possibilities, not licences.
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Mar 21, 2010
I'm using Ubuntu 9.04 x86_64 and trying to setup SSH to connect to my machine externally. The open ssh server is already installed and I can using ssh localhost. Moreover, I also forward port 22 to my machine and check using [URL] Everything seem to be ok, but when I trying to connect using ssh -vvv <ip-address> I receive the following common error:
[Code],,,,
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Oct 31, 2009
I have a WindowsXP virtual machine which I need to isolate from the host machine completely (have the host act as a bridge but not be visible on the IP layer at all.) It still needs to have Internet access. Obviously it has to be able to contact the router but I would like to be able to block port 80 (or even just block all SYN packets addressed to the router.) I also want to allow port forwarding from the router to the virtual machine. I can use basic iptables but this is way beyond me.
The host OS is probably going to be Debian Lenny but this is not built yet so if someone can recommend a different distro which is as lightweight as possible but will support VMWare, iptables and tcpdump then that would be great. I was thinking of Slackware but I have not used it in ages and from what I can remember their is no real package management.
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Mar 10, 2009
is it possible to setup a DHCP server using the loopback or a virtual interface? I installed Sun VirtualBox on my fedora system and want to try and kickstart them from within the same box on a virtual network. Is this possible and has anyone done it? I only have a single NIC in the box and it is on my public network.
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Jul 29, 2009
I successfully installed the virtual box on my fedora 8 system, and also created a virtual machine with windows xp OS, it works nicely, I try to configure the serial port of my virtual machine and try to configure the path for the port "screen shot are attached" it gives me the error message also the "screen shot are attached" for your review.Is kind of mistake is going on during the path setting, and how to set the path for configuring the serial port of my virtual machine so that I can use the hyper terminal tool of windows.
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Jun 10, 2009
I have set up a gateway machine in debian lenny
internet is shared to the localnetwork by using squid as proxy server Can I improve the performance if I set up this machine as DNS cache server?
What is the result if I set this machine as Primary DNS?
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Apr 11, 2010
I have two Linux machines both running Debian (I do not want Windows to be involved at all). One is a desktop and one is a laptop. I desire to connect a not-yet-purchased printer/scanner combination machine only to the internal LAN via my router (Linksys WRT54G) via Ethernet cable, or via wireless if the printer/scanner has that capability. I want to be able to print to that printer (and scan from its scanner) by only having to turn on the printer/scanner and only one of the other computers, and not have to have both Linux machines turned on in order to print and/or scan.
So my questions are:
When I look at specific models of printers, what should I be looking for in their specifications that indicates that this configuration is possible (i.e., should I be looking exclusively for printers that say they are "wireless printers" or "network printers")?The reason I ask this question: In my online searching, I thought "networked printer" or "stand-alone network printer" meant just that, but what I found instead are pages and pages of instructions on how to connect the printer locally to a Linux machine, with the associated setup to allow that Linux machine to serve print requests coming from other machines on the LAN. And that approach is not what I want to do (with the notable exception of temporary setup to validate that the printer is responding to requests for printing and scanning from Linux).
Are there particular brands, makes, or models that I would have better luck in getting to work in this manner (i.e., "better stick with HP or Xerox")? Am I kidding myself that a combination printer/scanner would work in the same fashion and still be relatively easy to set up on both Linux machines without resorting to some Windows-centric approach? Result of my searching so far (I have not worked my way through all of these in detail, but plan to): References to local printer connection which is not what I want:
Setting_Up_a_Network_Printer_using_CUPS
Set up a network printer using cups
Set up a printer
The post inside Setting_Up_a_Network_Printer_using_CUPS that starts with "running an HP Photosmart 8450 as a stand-alone networked printer" (where is the permalink?) is as close as I could get, but I am concerned that the instructions given are specific to the HP Photosmart 8450, or specific to the HP vendor, versus for all printers that can be connected to an Ethernet network (not that being locked into HP is going to be a problem necessarily, but I would like to know why if that is the case). Linux compatible printers says "Have a look at LinuxPrinting for known working drivers for printers data base. Also buy from a linux friendly company, ie HP, Brother, Epsom." Later in that thread, someone said Definitely don't buy canon.
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Nov 18, 2010
I should preface this by saying I'm pretty much new to ubuntu. I was a nerd back when I used windows, so I'm fairly knowledgeable about it, but I lost interest right before switching to linux, so I haven't learned much past basic navigation.
I bought a WPN311 wireless card for my homebuilt machine a while back and still can't seem to get it to work. One person told me that after upgrading to Lucid it should work out of the box but that's not the case. It seems my computer doesn't even recognize that the card is plugged in. When I open the drop-down menu to choose which network connection to use, any sort of wireless option doesn't even show up.
My machine:
EVGA 112 CK-NF68-T1 motherboard
Intel Core 2 Duo E6750
Two sticks OCZ DDR2 PC2-6400
ATI Radeon X1650 Pro
And the Netgear WPN311 in question
lspci output:
Code:
00:00.0 Host bridge: nVidia Corporation C55 Host Bridge (rev a2)
00:00.1 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
00:00.2 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
00:00.3 RAM memory: nVidia Corporation C55 Memory Controller (rev a1)
[code]...
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Feb 2, 2011
I'm trying to setup a mercurial code sharing server on an Ubuntu machine but I can't figure out how to get it running. I'm setting up this server on a LAN so I don't want any security. Another thing I should mention is that I'm using Netbeans to code in Java. how use mercurial and tortoise (I've got them installed).
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