On Wed, Apr 25, 2012 at 8:07 PM, Rance Hall <[email protected]> wrote: > I have a win7 64bit host that has been running vbox for a long time. > The last two updates (4.1.10 and 4.1.12) have left all my guests > without network access. > > I tried asking about this once before, but I didn't ask a very good > question because I didn't know how to troubleshoot this issue. > > I installed vbox 4.1.12 on a new win7 64 bit machine at work today and > it works flawlessly. > > This tells me there is something wrong with my problem host and not vbox. > > I tend to prefer bridged networking, but Ive tried over the last few > days with NAT also, with no help. > > I've tried different guest OS families from Win XP to Linux to BSD, > all have similar brokenness. > > Here is what happens (in bridged mode): > > 1) Guest launches normally and gets IP address from network. > > 2) guest can ping by name sites on the internet. > > 3) Web browsing times out. > > It *FEELS* like that vbox is firewalling tcp packets or something > similar, but I can find no place where this would be setup. > > I know this isnt stock vbox, but does anyone have any ideas of > anything else I can check. > > So far I've tried uninstalling/reinstalling vbox. > > I've deleted all the network adapters from device manager (including > the isatap adapters that you see when you "view hidden devices") and > reinstalled. > > So far, I've come up empty. > > Any help or pointers appreciated. > > Rance
I finally found the source of my problem. I was able to do a workaround and got internet access restored to my guests in bridged mode. But the workaround itself created some questions so here goes. The "solution" and the discussion. I was following a hint from an old vbox post about a similar problem which suggested that one thing I could try was to go into network device properties and disable and reboot and re-enable the vbox network driver that attached to your primary device. When I got to the device properties window I see a "filter" added by my Anti-Virus app. I disabled this filter, and restored internet access to guests. I didn't even know that my AV had done this. So here is my question: Is there a networking standard that allows "filters" like this to know what goes to the host and what goes to the guest? I'd like to file a bug report with the AV provider but I need to know more about the way vbox does networking. This AV "filter" blocked NAT and BRIDGED mode to the guests, so I'm guessing that the AV was just a little "over zealous." I do not use a "internet security suite" intentionally. Its just an AV app, or at least I *thought* it was. I'm certain that all of you have AV tools on your host OSes as well and I'm sure that most of them have "filters" or something of this kind that do not interfere with vbox. For those of you that offered suggestions, thanks, it got me thinking a new direction and eventually lead to this discovery. Rance ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ VBox-users-community mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/vbox-users-community
