Coinnection to the outside from my server but no connection to the server to clients

cmdolcet
cmdolcet used Ask the Experts™
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I am running Hy per v sever to my Domain controller, running SERVER 2012.

I can get on the internet from my server but going inside the VM and any client I can't connect to the server or the internet?
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Distinguished Expert 2018

Commented:
Do you have any sort of restrictions set up? Maybe something Windows Firewall related on the DC?
Distinguished Expert 2018
Commented:
Hyper-V uses the concept of virtual switches, and much like the name implies, it is very similar to a physical switch. Just in software.  You have to create the switch. Give it a physical port to the outside world (usually a second or third or fourth NIC) that is connected directly or indirectly to a router. Then in each VM, attach a virtual NIC to the virtual switch. Just like plugging a physical machine into a switch with a patch cable.

Then from within the VM, you set up the IP settings on the virtual NIC just like you would a physical NIC.  Has to have an IP address (or use DHCP) and a proper subnet and gateway.
Distinguished Expert 2018

Commented:
And I *really* hope you aren't running Hyper-V *on* your domain controller. If you are, please stop now and replan. This is not a good road to go down.
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Commented:
I have Windows Firewall enabled on the DC control. The Hyper-V actually runs on the the physical box and not on the DC. Everything is setup correctly and works fine. I just had an instance one Monday where I walked in and no one could get on the DC computer to access company information. I also notice no one could surf the web. When I tried surfing the web from one of the VM (DC for instance) I was not able to get a valid web page.

When I went back onto the main box I could navigate to the web. All I did was do a hard reboot on the server and once back up everything connected. I look in the event logs and could not find an error relating to the issue.
Distinguished Expert 2018

Commented:
What type of NICs are in the server? You have to turn off VMQ if you have Broadcom NICs.

Author

Commented:
I will double check that!
Distinguished Expert 2018

Commented:
Also try to disable Windows Firewall on the DC

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