Host has firewall; do I need a firewall for Guest too?

Discussions related to using VirtualBox on Windows hosts.
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ghostdog82
Posts: 1
Joined: 6. Aug 2009, 10:51
Primary OS: MS Windows Vista
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: MS Windows XP, Ubuntu 9.04

Host has firewall; do I need a firewall for Guest too?

Post by ghostdog82 »

I'm running VB on a Windows Vista with a 3rd party firewall.
Is the traffic to my Guest machines monitored by the Host's firewall or do I need to install a firewall on my guest machines too?

Thank you very much!
vbox4me2
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Location: Rotterdam
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Re: Host has firewall; do I need a firewall for Guest too?

Post by vbox4me2 »

Test it with angry ip scanner and such port scanning tools, never do guesswork with firewalling, test it.
Sasquatch
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Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows XP, Windows 7, Linux
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Re: Host has firewall; do I need a firewall for Guest too?

Post by Sasquatch »

You do for sure if you use Bridged. NAT traffic should be checked, but if you allow all connections by VB, it won't help.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
DaGunster
Posts: 6
Joined: 20. Jun 2009, 00:23
Primary OS: MS Windows Vista
VBox Version: OSE Debian
Guest OSses: Ubuntu Server 9

Re: Host has firewall; do I need a firewall for Guest too?

Post by DaGunster »

Does your VM get a new IP from a router? Then yes, you need a firewall.
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