Questions tagged [virtualization]

Virtualization is the creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device or network resources.

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Penetration-resistance of a HaLVM unikernel

A HaLVM unikernel is a Haskell program compiled with a modified version of the Glasgow Haskell Compiler to produce a standalone Xen kernel, which will boot on any Xen PV machine instance. A HaLVM ...
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Firewall in virtual machine

I'm putting my server to use as a file server and a firewall. I'm looking at KVM or Xen VM setup, where file server and firewall get their own VMs and host is just supplying the hardware (so Xen way, ...
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Hyper-V Sockets in 2016 version and host/guest communication

In new version of Hyper-V released recently with MS Windows Server 2016 contains a new functionality Hyper-V Sockets which allows for host/guest communication. It uses WinSock API with new address ...
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VirtualBox & Spectre V4

I found the following ticket in the VirtualBox issue tracker: https://www.virtualbox.org/ticket/17987 The important (in the context of this question) part is that the guest OS (Debian) running in ...
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What security isolation exists between VDI instance to VMware Horizon to ESX?

I read about malware that was able to escape the VM and get to the VMware Horizon host and then to hypervisor ESX, but I am not sure what security controls exist to prevent malware from jumping to ...
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368 views

Can an iPhone run two operating systems?

I'm looking for something similar to Virtualbox, but in iOS where each system would be isolated. The content in the virtual environment shouldn't be detectable by the host. (Not restricting answers to ...
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Need Security advice on virtualization and windows security

I have a little doubt about the security of my virtual machine and Windows. Can anyone please point me in right direction? Below is my what, how and why I made my virtual machine. Let me tell you ...
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95 views

virtual environment for learning

I have a basic lab with one Win7 VM in a LAN and another (vyos) serving as the default gateway. When I start my Kali Linux VM (it is attached to the same LAN segment) I can see ping requests and ...
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What are the steps to securing encryption keys/databases on an unsecured DAAS provider?

Most Desktop As A Service providers store their virtual hard drives and the VMs RAM in a way that allows them to access their contents. Choosing a provider who offers a 'no-knowledge of server' ...
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Trusted Execution Environment Vs. Hypervisor or VMs: How are they related?

I am a newbie learning all about isolation and separation for securing applications and system software. In this regard, I was reading up on ARM TEE and how it is available on most Android phones to ...
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121 views

What are the security trade offs between the different methods for encrypting a guest VM image?

The scenario is a lightly secured home or work PC used primarily for low-sensitive operations. For more secure activities a pre-built and restrictive virtual machine will be used. I'm mostly ...
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1answer
279 views

Mitigation of Spectre and Meltdown affecting host OS from guest OS (Virtualbox)

I don't know all the details of Spectre and Meltdown, but the way I understand it is that they allow reading from memory, not writing to it. Also, I read that at least Spectre can get out of the ...
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Is using AWS and administered VMs a reasonable and feasible secure environment?

I'm currently tasked with exploring options for hosting secure data for our company that don't require setting up any in-house infrastructure as we don't currently have any. Everyone is a developer ...
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222 views

What's going on with connections to/from bluecoat?

I'm trying to track down a cause on an Internal Server Failure for an Apache server. The IP address changed recently, so I thought the crash might be related. A quick search of the old IP: $ sudo ...
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102 views

Can linux cgroups and namespaces assist hiding malware?

Reading about sandboxing/security possibilities I was looking a bit into cgroups and namespaces and asked myself: How do I know that my linux root account is indeed the real root account and not ...
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Are Hyper-V Memory Snapshots secure/encrypted?

When dealing with encryption tools (TrueCrypt, Bitlocker and any successors) the passwords are always somewhere in memory. Therefore when there are memory dumps on a hard disk, for example in the ...
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How to manage security for multiple PC and VM?

I have a firewall VM which creates I have used to setup subnet for different purposes. For example: (fake ips, of course) 1.1.2.1/24 DMZ 1.1.3.1/24 Internal 1.1.5.1/24 security/logging I use ...
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126 views

How to handle password storage for my project?

We have NFC cards to keep track of presence, students scan their card to a terminal at the beginning of every lesson, we want to extend the cards usage to filter out who can access the Raspberry Pi's ...
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How to affect VMs in a network using WannaCry?(Cuckoo Sandbox)

I have a network consisting of 2 VMs(Windows 7). VM1:- 192.168.56.101 VM2:- 192.168.56.102 Both are connected to vboxnet0 (192.168.56.1). I infected VM1 using WannaCry ransomware but the ...
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VirtualBox file sharing: is there a security difference between never having done it and having done it but now disabled it?

I'm thinking of getting started with VirtualBox but for security reasons I would like to keep file sharing off. However, there are certainly some files I'd like to transfer from host to guest. Would ...
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79 views

Secure way to sign virtualbox module for secure boot

I'm not sure if the Virtualbox version from the repository of my Linux distribution is already signed and works right away, but since it's not up-to-date I'm installing Virtualbox from the official ...
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How much VirtualBox device/ios emulator/blueStacks informatin can be logged/tracked by servers/ apps?

This question is intended to know if we can be tricked by Virtual devices emulators. How much logging information can servers/apps request to tell the difference? In the other word, Can we hide our ...
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How to manage several VPNs for customers?

This is, somehow, a theoretical question. I am working in a software-developer company. We have several customers. For each customer we have a Virtual Machine where we have a VPN to the customer ...
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Sandboxing IE on metro interface

I hold a tablet with Windows 8.1. When I'm on the desktop interface I do use Sandboxie for normal internet usage to prevent having Windows infected. I wonder if there is a way to do the same with the ...
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VPN Server Inside VPN client on Router

This is a different context of an already asked question: In a few words: Sub-VPN or VPN SubNetwork... VPNsception? So I am using DD-WRT flashed router which connects as a client to VPN server "...
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Is it possible to lock guest VMs (or processes) to sticks of physical RAM to prevent row hammer attacks?

I was wondering if it is possible through some means to isolate processes (or preferably guest VMs) to physical sticks of RAM. This would be to prevent row hammer like attacks from using physical ...
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618 views

Virtualization / Cloud-Stack fingerprinting from running VM

How can the host environment (not just the OS) be identified from a running guest VM. To determine what the underlying host and virtualization stacks being used actually are. I.e. whether there's a ...
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202 views

VPN Split Tunneling with VM safer?

I want to privately surf in a Virtual machine. I am questioning if it would be better/more private to use the Split Tunneling feature of my VPN Program (on the Host installed) and only allow my VM to ...