[ale] VirtualBox

[Michael H. Warfield]

On Tue, 2010-12-14 at 19:20 -0500, justin caratzas wrote: 
> Heres the best page I always reference VirtualBox networking issues.

> http://www.virtualbox.org/manual/ch06.html

> It states interestingly enough that there are some ICMP limitations
> (maybe resolved now?...hmmm.... pun).  I never like using NAT for
> reasons such as this, and pretty much always go with Bridged
> Networking option, especially if I need to communicate with the host
> machine.

NAT is an of itself an abomination that is only going to get worse with
the IPv4 run-out at IANA (clock is ticking to a mid January burn down at
IANA).  Now the bloody ISP's are talking about CGN aka NAT444 aka LSN
aka Carrier Grade NAT.  That's NAT at the ISP.  You think NAT is bad?
Wait till you get a taste of CGNAT.

http://en.wikipedia.org/wiki/Carrier_Grade_NAT

Mike

> -- justin
> 
> On Tue, Dec 14, 2010 at 7:11 PM, Tim Watts <tim at cliftonfarm.org> wrote:
> > Does ping complain of 'host unreachable' or 'network unreachable'?
> > Does your firewall restrict ICMP packets?
> >
> > OTOH, I've always had better results using bridged networking rather
> > than nat.
> >
> >
> > On Tue, 2010-12-14 at 18:36 -0500, Jim Butler wrote:
> >> Hi Everyone..
> >> I am trying to virtualize some servers, and I decided to use
> >> VirtualBox to do it instead of VMWare. My problem is this: I got
> >> everything all set up the way I wanted it, and installed three
> >> different virtual machines. Everything was working fine until this
> >> morning when I went to use the networking. Networking is set to NAT,
> >> and it worked fine before. Now, all of my virtual machines still work
> >> fine, but when I try to ping the host IP from the virtual machine, it
> >> is unable to reach the ip on the host. On the icon bar at the bottom
> >> of the virtual machine window, it shows network activity, and
> >> everything looks normal from within the virtual machine it's self.
> >> Furthermore, I can ping outside of my host box from within a host
> >> shell.. (that is, on the host (not the virtual machine) if I try to
> >> ping yahoo.com it works fine).. It's just a problem either with the
> >> way that the virtual machine is sending the packets, or with the way
> >> that the host machine recieves (or doesn't recieve) the NATted
> >> packets.
> >> If someone can help me with this, I would sure be appreciative.
> >>
> >> Thanks in advance,
> >> Jim Butler
> >>
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-- 
Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
 PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
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