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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377 views

Docker X11 Forwarding Security

I am currently running a Docker container with a program with a GUI forwarded over SSH (using X forwarding over OpenSSH). The virtualized server has X11Forwarding enabled and I can connect to it from ...
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1answer
49 views

What is the risk of data being recovered from SAN storage after logical deletion?

The specific scenario involves Linux servers on VMware hosts with SAN storage. If files containing sensitive data are deleted by Linux, can they be recovered by a low level tool similar to what might ...
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3answers
946 views

How do virtual machines help security?

Can using a VM help to protect my passwords or other data? I'm asking this because I'm using a PC that others have access to, so there is possibly of some malware. I don't want to login to my web ...
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0answers
68 views

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 "...
2
votes
1answer
102 views

Would placing a hardened virtual machine in a VPS provide more security?

I have been working with DigitalOcean for a while now and while I do like that they make it easy to start up with a fully functioning virtual machine ready to go. It makes me cringe a little though ...
9
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1answer
124 views

In VMs, do shared folders reduce security effectiveness?

VirtualBox offers the option of using shared folders, others probably offer the same thing. I am not sure whether the host is directly accessing the memory of the guest, or if there some process which ...
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1answer
137 views

Preventing outgoing Portscan/SYN/UDP Floods in the datacenter

We are a VPS hosting company that have servers housed in a datacenter in Germany. Currently we are receiving multiple take-down requests because customers are ports scanning or attacking servers ...
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1answer
107 views

Will Kaspersky or BitDefender work on Hyper-V? [closed]

In case if I decide to test them or just don't want install them on a physical machine. I mean usual versions of antiviruses, not specially designed for virtual machines. Also interesting if I can ...
0
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1answer
152 views

Sandbox for GNU/Linux secure enough to run malware in it without harm [closed]

I am seemkng for a sandbox for Linux secure enough to run malware in it securely. It should allow create different sandboxes run different programs in them, including the ones requiring admin ...
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2answers
358 views

When do shared disks “leak” data to other VMs, and how is that mitigated?

Inspired by this answer, I would like to know what are some common threats and mitigation techniques used to prevent one VM from leaking data to another via the shared storage infrastructure. ...
5
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3answers
383 views

Can I make my online server more secure using Docker?

I had my online web server ransacked, they got in through my hosted WordPress site and privilege escalated from there. I am wondering, if I put the WordPress in a Docker, would that go a decent way ...
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2answers
126 views

Can virtualization protect me from an infected BIOS?

As you know, there are attacks on the firmware of BIOS and HDD. What if I used some kind of VMS, maybe VirtualBox? Will this protect me from an already infected BIOS (and by that, I mean, no one can ...
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0answers
215 views

Enabling virutalization, addressing the bluepill risk?

Background to this question is the ambivalence I assume with virtualization. Also to start directly with clarity: the term bluepill should here be a placeholder to denote "malware that uses ...
9
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1answer
304 views

Attacks on keys generated with low entropy

If I were to give someone a two 4096 bits keys, and say one was generated in a Linux OS with very very low entropy available, and one was generated in a Linux OS with more than enough entropy. Would ...
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1answer
99 views

Virtual Machine Integrity Hash Check

If I used virtualbox to create a snapshot template of a preconfigured linux machine and wanted to ensure that no one has tampered with my snapshot, could I simply keep a comparable hash of the VDI ...
5
votes
1answer
96 views

VirtualBox: Ubuntu With or Without Virtual Hard Drive

I've been working on a setup using VirtualBox that uses the Whonix Gateway as a Tor middlebox and I am planning on using Ubuntu for the workstation. I don't plan on storing any information on the ...
2
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1answer
151 views

Boot Attacks possible on encryption keys used in virtual machines

Is it possible for an attacker to restore passwords or encryption keys that one has used in a virtual machine the same way like restoring keys that have been used in a standard system applying a boot ...
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1answer
712 views

Security issues for host system when running a home web server on a VM

I want to run a web server at home (really for the fun and learning of web/network and other security best practices), running a web app that I plan to write with Ruby on Rails and be able to access ...
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2answers
89 views

Safety of routing a network to a firewall

I am studying for my CompTIA Security+ qualification and have come across the following question. Question : You are implementing a testing environment for a development team. They use several ...
6
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2answers
4k views

Security of LXC compared to OpenVZ

For years, I'm now using OpenVZ on my server, but support discontinued for Debian and Ubuntu, current releases seem to focus on LXC now, which is not a bad idea from the point of comfort. But what ...
2
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1answer
45 views

Additional virtual security? [closed]

Besides following VMware's security best practices, are there any other recommended security technologies that are aimed at security and compliance in virtual environments? Vormetric comes to mind, ...
2
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2answers
321 views

Is creating a network bridge in order to connect a virtual machine to the internet insecure?

I have created a virtual machine using Hyper-V running OpenSUSE 13.2. In order to get an Internet connection on the virtual OS I created an external virtual switch. Windows 8.1 then automatically ...
2
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1answer
106 views

Will two virtual machines running on the same physical host machine get the same value from /dev/random?

Will two virtual machines running on the same physical host machine get the same value from /dev/random if read over the same time period? Say that Virtual-machine-1 wants to generate its ssh host ...
0
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1answer
38 views

Is it possible to FDE a VPS/VMS

Is it possible to implement Full Disk Encryption on a Virtual Machine Server or a Virtual Private Server? Also, if it's possible, will the service provider (of the VPS) be able to decrypt/see my ...
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1answer
150 views

How secure is QEMU/KVM? [closed]

I'm worrying about the security of the VM host machine (against guests) as the Kernel-Based Vitrual Machine operates at kernel level. UPDATE: Is there any guarantee that a guest can't manipulate/...
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0answers
263 views

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, I ...
2
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3answers
4k views

Completely encrypting virtual machine (for free) [closed]

I know in VMware workstation there's the option to encrypt a virtual machine. Is there a free way to do this without VMware workstation? I'm aiming for the fullest encryption and encapsulation ...
12
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1answer
636 views

Why is EC2 not vulnerable to VENOM?

I saw the advisory stating that EC2 instances are not vulnerable to VENOM. My understanding is that EC2 runs on Xen, and that VENOM affects XEN. Can anyone explain why EC2 is not vulnerable? Do ...
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1answer
119 views

Virtual Environments vs SELinux/AppArmor : Which is better for running unreliable applications?

By virtual environments, I mean Linux containers like Docker and Vagrant and not full blown VirtualBox. So, the issue is that I often have to install packages from untrusted sources in my Ubuntu. ...
2
votes
3answers
3k views

How secure is VirtualBox for privacy/anonymity? [closed]

Is it possible that Oracle places backdoors in VirtualBox that compromise a user's privacy/anonymity? For example, is running Whonix through VirtualBox a secure set up if your host OS is unencrypted? ...
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3answers
81 views

Isolate part of my PC to keep security for online purchases?

Soon I'll doing some purchases online using my mother's credit card. She's pretty sceptical about online shopping but I convinced her. She's not so sure about how secure it is and since I'm not so ...
8
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2answers
727 views

CTF competitions/challenges that are Windows based?

I've been messing about in CTF's for a while and I also do pen-testing professionally, what i've noticed is a distinct lack of CTF competitions using windows environments. This is in stark contrast ...
3
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2answers
234 views

Is VM per service a reasonable server security model?

Let's say I am hosting several services on my server, for instance, email and a web page. I am concerned that the web server software may have unknown vulnerabilities in it, which will allow an ...
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0answers
53 views

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 ...
3
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1answer
106 views

Can you securely allow users to create VM's on their workstations

I've moved from a job where developers were encouraged to use technologies like docker and vagrant to create VM's on their workstations for testing and development. At my new job, the IT manager ...
0
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1answer
145 views

Is it possible for guest system to spy host system when using virtual maschine (VMware) [duplicate]

I want to prepare virtual maschine which will be used to connect through vpn with one of my clients. There are some other programs and devices that I have to install in order all of this to work. ...
5
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2answers
439 views

What are ways I can analyze malware in an infected machine, not just clean it?

I often run into infected devices in my environment and would like to learn more about the specific infections that have gotten in. What are the best tools and techniques I could use to do this? I ...
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2answers
788 views

Setting up a security lab, looking for a little guidance [duplicate]

I'm new here. Over the past couple of years I've had a growing interest in the security aspects of IT/CS. Recently, I've started setting up a lab for myself based on a kali/win7 dualboot and I've ...
2
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3answers
894 views

Can I use 777 file permissions inside server virtualisation (that only I have access to) without worry?

For this question, please assume I have followed every possible security measure to secure my Linux server. Only I have access to the web server via one open SSH port. If there are security issues ...
3
votes
1answer
190 views

How to detect when your RAM is being copied or scanned by a hypervisor

I am working in a Virtual Machine that is on a ESXi server on a remote machine. I am not the only one who has access to the ESXi and others could take memory snapshots of my running VM. Is there a way ...
0
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1answer
163 views

Infection through Virtual machine in NAT mode

I have a VM box configured using NAT to my host OS. It seems I can ping to the machines in my LAN. If my VM box got infected somehow my malware while surfing, would the malware be able to infect ...
2
votes
1answer
104 views

Are paravirtualized drivers a security risk?

Below is a copy of my answer that I gave in some other thread (Would running VMs inside of VMs be a more secure way to study viruses, etc?) about a topic of security of nested virtualization. I would ...
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2answers
501 views

intentionally vulnerable virtualbox or vmware appliances for practicing mobile pentest? [closed]

Is there any virtualbox or vmware appliances or anything like metasploitable that one can use to practice mobile pentest without the real hardware? I can find those for traditional ethernet but what ...
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1answer
911 views

How to configure Suricata to not interfere with virtual machine [closed]

I'm currently planning on setting up Suricata as a firewall on my laptop. I'm wondering however if it's possible to set Suricata to not interfere with traffic to and from specific virtual machines ...
0
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2answers
114 views

Is it possible to run an encrypted java environment?

I've seen that virtual machines in virtualbox or VMware can be encrypted so that no one on the outside can access the disk, ram or CPU cache since the entire hardware is emulated and encrypted too. I'...
2
votes
1answer
1k views

Why is nmap that slow on my system (ubuntu 14.04)?

I just started to learn something about portscanning with nmap. when i try to run an a nullscan or any other type on a virtual machine (win7 no firewall) the scan needs a lot of time to perform: sebi@...
0
votes
1answer
270 views

Upgrade my Dell Inspiron laptop for PenTesting [closed]

I have a Dell Inspiron N5110 & wanna upgrade it to start practising pentesing with virtual machines. What do u suggest from specs below to upgrade (I have Kali Linux, Tails OS, XP, Metasploitable ...
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2answers
254 views

Is openVZ patched against all exploits for its current kernel version?

I am looking for a container vitalization software that will allow me to create containers that will house specific software/jobs/tasks which I can start stop at will (and bind to interface aliases). ...
8
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2answers
2k views

Is BitLocker on a virtual machine still FIPS 140-2 compliant?

BitLocker can be used as a cryptographic module to fulfill FIPS 140-2 security level 1 compliance. In a common setup, USB thumb drives can be used to unlock drives encrypted by BitLocker on startup. ...
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1answer
130 views

How can a VPN use a virtual router and not send encrypt traffic and still be safe?

Today in networking class we were talking about VPNs. The prof got on topic of virtual routers and said that a way some VPNs work is by a client would purchase the service from the ISP and the ISP ...