Firewall

Discussions related to using VirtualBox on Windows hosts.
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Jiger
Posts: 100
Joined: 11. Jan 2017, 17:33
Primary OS: MS Windows 10
VBox Version: OSE other
Guest OSses: MS Windows XP, Linux Mint
Location: Stockholm

Firewall

Post by Jiger »

Does the host´s firewall protect the guest system in any way?
socratis
Site Moderator
Posts: 27330
Joined: 22. Oct 2010, 11:03
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Win(*>98), Linux*, OSX>10.5
Location: Greece

Re: Firewall

Post by socratis »

It depends.
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Jiger
Posts: 100
Joined: 11. Jan 2017, 17:33
Primary OS: MS Windows 10
VBox Version: OSE other
Guest OSses: MS Windows XP, Linux Mint
Location: Stockholm

Re: Firewall

Post by Jiger »

Well, in my case the host system is windows 10 home and the guest system is windows xp sp3 or rather "sp4" including all recent POSReady updates.
socratis
Site Moderator
Posts: 27330
Joined: 22. Oct 2010, 11:03
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Win(*>98), Linux*, OSX>10.5
Location: Greece

Re: Firewall

Post by socratis »

From Wikipedia on Firewall_(computing):
Wikipedia on [url=https://en.wikipedia.org/wiki/Firewall_(computing)]Firewall_(computing)[/url] wrote:In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules.
The outgoing traffic, you don't really care about. What incoming traffic do you anticipate that could attack your guest?
  • If you use Bridged and you're behind your router (usually a firewall as well), you'd have to specifically direct that incoming traffic to a specific port in your guest. Your host's firewall isn't even involved.
  • If you use NAT, you'd have to specifically direct that incoming traffic to a specific port in your guest by using the NAT forwarding rules. You would be manually bypassing the host's firewall, so you would know about it.
Are you doing any of those things? If not a firewall is useless. If you're thinking that a firewall is going to protect you from viruses and trojans, you've got to think differently.

Your typical scenario from these attacks is: you go to a website. You download something. You're owned. A firewall will not protect you.
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
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