Guys, I have a very strange networking problem here at work and cannot see the wood for the trees. The OT bit is that the VMs are Windows XP guests running in Virtual PC (XPMode) on Windows 7 hosts. However, the problem is relating to being able to ping between guests and (sometimes) from hosts to guests. is there anyone who is network / VM savvy enough to suggest an avenue to explore?
Here is the setup: * 3-off standard Dell desktop PCs running Windows 7 Professional. * 1-off standard Dell desktop PC running Kali Linux Live Disc. * The three PCs are networked together using a cheapo Netgear Switch FS108. (I have also tried a 3-Com hub.) * All physical computers are allocated static IP addresses in the 192.168.0.* range with a netmask of 255.255.255.0. * Each of the three desktop PCs are hosting an almost identical VM running XP professional. The only difference between the three XP instances are hostname and IP address (in the same range as the hosts). There are some applications that are configured differently on each guest, but I don't believe that they have any bearing on the problem because I can shut them down with the same result. * This network is completely private and Firewalls are off in all hosts and guests. Here is what happens when I ping each machine: * All the hosts ping each other OK. * One of the guests (no 3) can always ping one of the other guests, but generally not both. * Guest No 1 can never ping Guest No 2 and vice versa, but both can usually ping Guest No 3. * The hosts running Guests 1 & 2 also have trouble pinging the guest on the other machine. * The above results are variable. If I use nmap from the fourth machine running Linux I also get variable results: * Usually all XP guests show around 5 or 6 ports open, but this does vary. * All W7 hosts show the same dozen or so ports open. * Sometimes one of the guests shows up as having all of its ports filtered. If I use ping from the fourth machine running Linux I can ping everything! All suggestions gratefully received. -- Terry Coles -- Next meeting: Bournemouth, Tuesday, 2013-10-01 20:00 Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ New thread on mailing list: mailto:dorset@mailman.lug.org.uk How to Report Bugs Effectively: http://goo.gl/4Xue
