I’m having an issue I can’t seem to resolve. Here’s a bit of context. Parallels host machine is a MacBook Pro Mavericks and Parallels 9, and it has a Windows 7 and an Oracle Enterprise Linux 5 virtual machines. Local Network (Wifi): 192.168.100.x Parallels Shared Network: 10.211.55.x MacBook Pro OS X Mavericks (MBP) : 192.168.100.42 (DHCP Fixed) and 10.211.55.4 (Manual setting) Windows 7 (WIN7): 10.211.55.3 (Manual Setting) (Linux host is in hosts file) Shared network on Parallels shared adapter. Gateway 10.211.55.10 Linux (LIN): 10.211.55.5 (Manual Setting) Shared network on Parallels shared adapter. Gateway 10.211.55.10 I have configured NAT port forwarding in Parallels Preferences such that TCP port 8001 (web page) go to 10.211.55.5 on port 8001. The LIN host serves this web page. Parallels DHCP starts at 10.211.55.10 I can use a browser on MBP and access http://10.211.55.5:8001 I can use a browser on another mac on the local network and access http://10.211.55.5:8001 I can ping from WIN7 to LIN I can trace route from WIN7 to LIN and it works showing direct link between two guest OSes. I can ping from LIN to WIN7 I can trace route from LIN to WIN7 and it works showing direct link. Even though I am testing with addresses rather than host names, the LIN host also resolves correctly to the LIN address in nslookup, ping, tracery, etc. I can browse internet pages without problem from WIN7, and from LIN. I can browse a web page on MBP, using 10.211.55.4:80, from WIN7. I can browse a web page on MBP, using 10.211.55.4:80, from LIN. But, I cannot open http://10.211.55.5:8001 from WIN7. Same occurs with other protocols (SQLNET). The firewalls in OSX, WIN7 and LIN are turned off. I have tried with MTU from 1500 down to 1300. I simply don’t understand why I can ping and trace route, but anything else is not working between WIN7 and LIN. I have tried updating the WIN7 hosts file and replacing the 10.211.55.5 with 192.168.100.42, and then it all works, through NAT. However I don’t want this, as I want this to work when I bring my MBP to other networks. I don’t want to have to change the WIN7 hosts file all the time. Can someone help? François
Hi, Ok, so I caved in, did not find what the actual issue is, but now have a workaround. I added a static route from WIN7 to LIN, through MBP gateway, and a static route LIN to WIN7 through MBP gateway. It is now working.