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  • Secure Server Distro

    - by Drama
    Hello, I have a root-server (i7/24GB/1TB) running Ubuntu 10.04 LTS as my OS. After some security audits (OpenVAS, Retina etc) I see that Ubuntu isn't the most secure system for a semi-corporate environment. Its updated from many sources, ofc from the Ubuntu security repo too. But nevertheless I could exploit my OpenSSL install with an exploit from August/September. There are some critical updates needed which Ubuntu does not provide. I was using Debian and Ubuntu for almost 5 years but now I doubt. What distro is secure and up to date from your point of view? How can I make the server more secure? Outsourcing of every software-module to a VM? I am not new to server-hardening, my packages are up to date I read Ubuntu Security Notices and I have no unneeded services installed on my server. Thanks.

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  • VPN within a VM to allow for internet access on the host

    - by David Durrant
    I have a network connection (created under Networks and Sharing) that I use to connect to a customer's site. But when I use this to connect to the site, I loose all access to the public internet, and can only access customer specific items. I want to circumvent this issue by creating a VM and then utilizing the VM to connect to the network location and interact within the customer's domain, while leaving my host machine open to the internet. I'm not extremely familiar with networking, but I have a few basic skills. Please let me know if this is possible and what the correct procedures are. I already have a VM created with VirtualBox, and both the host and guest are running Windows 7 x64. I have created duplicate VPNs already, but can only connect successfully on the host machine.

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  • How can I restore VM on a new Hyper-V server?

    - by jaloplo
    Hi all, I was working gladly with my VM on my local Hyper-V server. But, after installing some updates on the host the system only show the famous blue screen. I couldn't start my host so I reinstalled it and configured as new Hyper-V server. My VM was in a another disk to prevent this happening but I don't know how to add it as a new VM on new server. In addition, this VM has various snapshots so, how can I add this VM to my new Hyper-V server? UPDATE: I can't do Export/Import because my server crashed before I can't do it.

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  • Increasing a Linux partition once VM size increased in vSphere?

    - by dannymcc
    I have a Ubuntu 12.04 VM running on VMWares ESXi 5.1. The server (VM) itself has run out of space, the results of df -h are as follows: Filesystem Size Used Avail Use% Mounted on /dev/sda1 19G 17G 1.2G 94% / udev 490M 4.0K 490M 1% /dev tmpfs 200M 232K 199M 1% /run none 5.0M 0 5.0M 0% /run/lock none 498M 0 498M 0% /run/shm The original VM HDD size was just under 19GB which is I have now increased to 100GB within the vCenter GUI: Is there a simple way of doing this? The VM doesn't seem to acknowledge the increase at all.

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  • Multiple VLANs in the same subnet

    - by A.J.
    Is it possible to have multiple VLANs in the same subnet, with the same gateway address (TMG)? I want to avoid having many Subnets (and vNIC's in TMG) just to isolate sets of a few hosts. IP: 10.0.0.1 (TMG server) VLAN:1 ~ 3 IP: 10.0.0.11 ~ 20 (Hosts group 1) VLAN:1 IP: 10.0.0.21 ~ 30 (Hosts group 2) VLAN:2 IP: 10.0.0.31 ~ 40 (Hosts group 3) VLAN:3 Note that I don't want them to connect to each other, so ARP/inter-vlan routing (within the subnet) is not required. The gateway is running in a VM within ESXi 5, I can pass the VLans to the VM using VGT or VLan Range, but I don't know how the OS/TMG should handle them.

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  • Dedicated Mouse and Keyboard on VirtualBox VM

    - by Myersguy
    Currently I am trying to run VirtualBox on my second monitor, with a dedicated mouse and keyboard. However, doing so has not proven easy. There has been times where the mouse works, but not the keyboard, vice versa, or nothing works at all. The biggest problem I am running into is this: When enabling the USB mouse and keyboard from the VM, I get an error: 'USB Device is busy with a previous request.' The only thing that is using second mouse and keyboard, however, is Windows. The other error I have received stated that the VM was unable to create a proxy for the device. Additionally, the VM occasionally will disable the secondary keyboard entirely, requiring me to unplug and replug it into my PC to re-enable it again. Keyboard auto-capture is disabled, and while a solution I was reading online stated to turn off mouse integration, that option is grayed out on my machine.

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  • negative time for a ping echo reply

    - by Mario
    I was happily pinging in the net when suddenly: Pinging X with 32 bytes of data: Reply from .235: bytes=32 time=1444ms TTL=41 Reply from .235: bytes=32 time=1767ms TTL=41 Reply from .235: bytes=32 time=1531ms TTL=41 Reply from .235: bytes=32 time=-1198187ms TTL=41 Ping statistics for .235: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 1444ms, Maximum = -1198187ms, Average = 1073443462ms A negative time for the reply. I checked wireshark and it had the same values: Time delta from previous displayed frame: -1198.187867000 seconds Time since reference or first frame: -1179.935038000 seconds I didn't change the time of the machine while pinging. This was made in my local network at home, from a XP VM in windows 7. So I blame the VM (virtualbox). But I was wondering if this strange behaviour (to me) could have a reason, or if any of you have seen this before. Thank you bye.

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  • windows xp mode for windows 7 - save text input language settings

    - by Gero
    When I change the 'default language' in 'text services and input languages' in windows xp mode from EN-US to DE-DE the settings are reverted with the next logoff / reboot - EN-US is the default language again. Is there a way around this behaviour? I'm using the default 'XPMUser' in windows xp mode. I also checked 'turn off advanced text services' and disabled the language bar and windows xp remembers these settings - just not the default language..

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  • Why does my Fedora HD come up as 124GB when it was created to be 700GB in Hyper-V?

    - by barfoon
    Any ideas? How can I tell fedora to use 700GB, and do I have reformat to do this? Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_computer-lv_root 124G 3.9G 114G 4% / /dev/sda1 194M 23M 162M 12% /boot tmpfs 995M 320K 994M 1% /dev/shm Hyper-V settings: Thank you, pvdisplay -C: PV VG Fmt Attr PSize PFree /dev/sda2 vg_mycomp lvm2 a- 127.29G 0 lvdisplay -C: LV VG Attr LSize Origin Snap% Move Log Copy% Convert lv_root vg_mycomp -wi-ao 125.36G lv_swap vg_mycomp -wi-ao 1.94G vgdisplay -C: VG #PV #LV #SN Attr VSize VFree vg_mycomp 1 2 0 wz--n- 127.29G 0

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  • Reducing both pagfile.sys and hiberfil.sys in Windows 7

    - by greenber
    I recently used Defraggler to consolidate my free space areas on my D: drive preparatory to using Disk Manager to break my drive into two areas, one as my "data area" for Windows 7 (normally on my C: drive) and to experiment around with Windows 8. The Defraggler program works so well I ran it on my C: drive and I ended up with a lot of free space both on my C: drive and my D: drive. I was very happy. And then I woke up the next day and I've got virtually no free space left, something like 8 MB on my C: drive and about 3 GB on my D: drive. I then ran Wintree (which gives a nifty graphical representation of disk usage) and found I had a large page file and a large hiberfil. So I temporarily turned off hibernate and reduced the page file size to 2000megabytes and then rebooted so that both would take effect. It had no effect on the C: drive or the D: drive. That makes no sense to me. What caused the free space on each drive to disappear, why doesn't the page file size being reduced and the hibernate file being turned off free up disk space to either the C: or the D: drive? Would it make sense to delete the two files in question and, if so, how do I go about doing that? Safe mode? Thanks. Ross

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  • listing of VM's created before libvirt installation or started by any other VM management tool

    - by Dr. Death
    if my VM's are not created using virt-manager or are created using any other tool, then virsh system list command does not give them in the list of running VM's however they are running perfectly on my KVM server. Is there a way to list these VM's in my system list anyhow? I have VM's managed by GKVM, AQEMU, libvirt etc. also some of the user start their VM's using the qemu command as follows: kvm "image name" -m "memory". this starts the VM and allow them to work perfectly. but I am not able to list all these VM's using the virsh system list command.

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  • VMWare Pre-Allocated vs. Growable, which is faster?

    - by tekiegreg
    In an effort to increase speed in my Vmware setup, I was thinking about converting a Windows XP Guest 32 bit I have from growable to pre-allocated, I'm currently running VMWare Workstation 7 with Windows 7 64 bit as the host. Specs: Dual Core CPU, one allocated to guest 4GB of RAM, 2GB to guest HD max capacity is 500GB, 150GB allocated to guest (I have 300GB left and don't mind parting with the space, currently HD is 80GB and converting would obviously add another 70GB of space), HD that guest is running on is separate from Host OS Either that or any other suggestions you have might be appreciated, thanks!

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  • VirtualBox guest OS accessing local server on host OS.

    - by Maxim
    Hi, On my Ubuntu HOST I have my local webserver. I installed VirtualBox and Debian as a GUEST. I would like Debian guest to be able to hit my webserver running on my Ubuntu host (for example, I just type http://localhost:8080/ in the browser under Debian). How can this be done? Thanks in advance.

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  • Would Apple be able to tell if I'm running Mac OS inside a VM?

    - by Thomas Havlik
    Just as the question/title says. I understand that running Mac OS inside of a VM is against the EULA for the consumer version (but not the server, which is much more expensive!) If I were to purchase a legal copy of Mac OS, and install it to a VM, then register as an Apple Developer, would they shut me out? Is there a way they can tell the difference between emulated hardware and Apple computers? I'm slightly unfamiliar with how all of Apple's software works. Windows goes through this "genuine" test whenever installing service packs, but I don't know if Mac goes through the same trouble. Many thanks, -Tom

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  • How can I create a copy of a vm in vSphere Client running on ESXi 4.0?

    - by user37860
    I'd like to create copies of the VMs located on my datastore that I can put up temporarily on a different server while I perform some maintenance on our main virtualization server. Aside from using the Converter utility (which I don't believe I can use with the Linux machines) is there a way to make copies of these machines? It would make my life a lot easier. Thanks!

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  • PowerShell create new Azure VM from uploaded disk (not image)

    - by MikeBaz
    I have a VHD in Azure storage. That VHD is configured as an OS disk through a command like the following: Add-AzureDisk -DiskName $newCode -MediaLocation "http://$script:accountName.blob.core.windows.net/$newCode/$sourceVhdName.vhd" ` -Label $newCode -OS "Windows" I would like to create a new VM pointing at that disk. From what I can tell if I was doing this with an image I would do something like: New-AzureVMConfig -Name $newCode -InstanceSize $instanceSize ` -MediaLocation "http://$script:accountName.blob.core.windows.net/$newCode/$sourceVhdName.vhd" -ImageName $newCode ` | Add-AzureProvisioningConfig -Windows -Password $adminPassword ` | New-AzureVM -ServiceName $newCode However this is wrong for me because I don't have an image - I have a configured VHD that is not sysprepped and can't be. How can I create the VM in PowerShell to point at the existing disk like I can through the portal?

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  • Quick and dirty user management service for Linux VMs?

    - by quack quixote
    Background I have a home server running Debian, and a workstation that runs various VirtualBox VMs (mostly Linuxen but some Windows). At the moment, I'm creating my main user account anew for every new Linux VM. I'd like to make use of a centralized user-management scheme instead, so I can just configure the new VMs for the directory technology and let them handle user lookups automatically. The last time I worked with anything like this, NIS+ was still in fashion. I have a vague notion of what LDAP and Active Directory are, but no knowledge of how to configure them for what I want. Question What user-management/network-directory technology should I use for providing user accounts to my network? The server must run on Debian Lenny. Client configuration should be simple point-at-server-and-go. I need an example configuration for one sample user account. (nice-to-have) I may want to mount the user's home directory from the server. (nice-to-have) The same configuration works with Windows clients.

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  • Hyper-V for Developers Part 1 Internal Networks

    Over the last year, weve been working with Microsoft to build training and demo content for the next version of Office Communications Server code-named Microsoft Communications Server 14.  This involved building multi-server demo environments in Hyper-V, getting them running on demo servers which we took to TechEd, PDC, and other training events, and sometimes connecting the demo servers to the show networks at those events.  ITPro stuff that should scare the hell out of a developer! It can get ugly when I occasionally have to venture into ITPro land.  Lets leave it at that. Having gone through this process about 10 to 15 times in the last year, I finally have it down.  This blog series is my attempt to put all that knowledge in one place if anything, so I can find it somewhere when I need it again.  Ill start with the most simple scenario and then build on top of it in future blog posts. If youre an ITPro, please resist the urge to laugh at how trivial this is. Internal Hyper-V Networks Lets start simple.  An internal network is one that intended only for the virtual machines that are going to be on that network it enables them to communicate with each other. Create an Internal Network On your host machine, fire up the Hyper-V Manager and click the Virtual Network Manager in the Actions panel. Select Internal and leave all the other default values. Give the virtual network a name, and leave all the other default values. After the virtual network is created, open the Network and Sharing Center and click Change Adapter Settings to see the list of network connections. The only thing I recommend that you do is to give this connection a friendly label, e.g. Hyper-V Internal.  When you have multiple networks and virtual networks on the host machines, this helps group the networks so you can easily differentiate them from each other.  Otherwise, dont touch it, only bad things can happen. Connect the Virtual Machines to the Internal Network Im assuming that you have more than 1 virtual machine already configured in Hyper-V, for example a Domain Controller, and Exchange Server, and a SharePoint Server. What you need to do is basically plug in the network to the virtual machine.  In order to do this, the machine needs to have a virtual network adapter.  If the VM doesnt have a network adapter, open the VMs Settings and click Add Hardware in the left pane.  Choose the virtual network to which to bind the adapter to. If you already have a virtual network adapter on the VM, simply connect it to the virtual network. Assign IP Addresses to the Virtual Machines on the Internal Network Open the Network and Sharing Center on your VM, there should only be 1 network at this time.  Open the Properties of the connection, select Internet Protocol Version 4 (TCP/IPv4) and hit Properties. In this environment, Im assigning IP addresses as 192.168.0.xxx.  This particular VM has an IP address of 192.168.0.40 with a subnet mask of 255.255.255.0, and a DNS Server of 192.168.0.18.  DNS is running on the Domain Controller VM which has an IP address of 192.168.0.18. Repeat this process on every VM in your environment, obviously assigning a unique IP address to each.  In an environment with a domain controller, you should now be able to ping the machines from each other. What Next? After completing this process, heres what you still cannot do: Access the internet from any of the VMs Remote desktop to a VM from the host Remote desktop to a VM over the network In the next post, well take a look configuring an External network adapter on the virtual machines.  Well then build on top of that so that you can RDP into the VMs from the host machine and over the network.Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Windows 8.1 Professional Hyper-V - can I create my own linux VM through it?

    - by KevinM1
    I have a Windows 8.1 Professional desktop, and would like to have a Linux Mint VM on it so I can do some opensource web development work. I've tried VirtualBox, but it's giving me an IO error during the Mint .iso installation. VMWare Player flat out tells me it can't install because I have Hyper-V on my machine by default. My biggest concern is nuking the desktop, which is where I do most of my non-development work/browsing/etc. The desktop seems to be listed as a VM itself in the Hyper-V Manager, and I don't want to accidentally break it. So, two questions: Can I create the Mint VM I want/need for my work? Can I do it without messing up the desktop?

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  • Creating a file server - How can I use a large VHD file in Hyper-V? (700GB)

    - by barfoon
    Hey everyone, After a few discussions (here, here, and here), I am still unable to create a simple VM that will be used as a fileserver hosted on my Hyper-V box. I have created a fixed 700GB SCSI drive (.vhd file), as I have learned an IDE drive of this size is not possible. Not to sound too cynical, but its blown me away at how much trouble its been to create a large amount of space and start using it. What is the best way to create a fileserver with a drive of this size hosted on Hyper-V Server 2008, and how can I get it going??? Inclusion of OS, driver, integration tools etc, anything you feel is required would be greatly appreciated. Extra information I am using the stand-alone version of Hyper-V server, and not Windows Server 2008. I have tried loading the Linux Integration Tools (linked in the comments of the last link above) onto a SUSE 11 VM and the installation fails, the machine cannot see the vhd at all. Thanks very much,

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  • European alternatives to Dropbox?

    - by torbengb
    Dropbox is positively brilliant, but the data center is probably in the US somewhere. Since I'm in Europe, there's plenty of lag and a poor upload rate. Are there any similar services using data centers in Europe? I'm looking for a free plan (cirka 2GB), so sites like Amazon S3 aren't good answers.

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  • How do I recover files from a corrupt VDI file?

    - by Eric P
    Is it possible to repair a corrupt VDI file? The OS on the VDI (XP) doesn't boot at all, it just hangs at a black screen. I was getting file errors before on its last boot, but now its not working at all. Sector viewer shows 'Invalid partition table Error loading operating system Missing operating system'. I tried mounting the file from the host OS, but it just says that the drive isn't formatted. I don't need to be able to run the VDI, but I do need some files that are on it. Is there any way to recover files from the corrupt VDI file?

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  • IPTABLE & IP-routed netwok solution for HOST net and VM's subnet

    - by Daniel
    I've got ProxmoxVE2.1 ruled KVM node on Debian and bunch of VM's guests machine. That is how my networking looks like: # network interface settings auto lo iface lo inet loopback # device: eth0 auto eth0 iface eth0 inet static address 175.219.59.209 gateway 175.219.59.193 netmask 255.255.255.224 post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp And I've got two working subnet solution auto vmbr0 iface vmbr0 inet static address 10.10.0.1 netmask 255.255.0.0 bridge_ports none bridge_stp off bridge_fd 0 post-up ip route add 10.10.0.1/24 dev vmbr0 This way I can reach internet, to resolve outside hosts, update and download everything I need but can't reach one guest VM out of any other VM's inside my network. The second solution allows me to communicate between VM's: auto vmbr1 iface vmbr1 inet static address 10.10.0.1 netmask 255.255.255.0 bridge_ports none bridge_stp off bridge_fd 0 post-up echo 1 > /proc/sys/net/ipv4/ip_forward post-up iptables -t nat -A POSTROUTING -s '10.10.0.0/24' -o vmbr1 -j MASQUERADE post-down iptables -t nat -D POSTROUTING -s '10.10.0.0/24' -o vmbr1 -j MASQUERADE I can even NAT internal addresses: -t nat -I PREROUTING -p tcp --dport 789 -j DNAT --to-destination 10.10.0.220:345 My inexperienced mind is ready to double VM's net adapters: one for the first solution and another - for second (with slightly different adresses) but I'm pretty sure that it's a dumb way to resolve the problem and everything can be resolved via iptables/ip route rules that I can't create. I've tried a dozen of "wizard manuals" and "howto's" to mix both solution but without success. Looking for an advice (and good reading links for networking begginers).

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