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Dedicated Server - IP Address and Firewall Help!

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#1 David Ashcroft

David Ashcroft

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Posted 11 May 2015 - 05:11 PM

Hi all, 


I have recently gotten a server from Hetzner, mainly because they are cheap and I only want it to do some testing with. I have gotten a server from them and I have installed Windows Server 2012 R2. By default the IP address and settings have been picked up via DHCP. 


The Subnet mask is:

The IP address given by DHCP is not private and is starting with 188.....


I have previously played around with Azure and Windows Servers on that, it is easy to open/allow ports, configure NAT etc on these. I dont seem to get those settings here, I assume that due to the actual Servers IP address being the public facing IP address then this means that there is not real firewall/security in place between my server and the internet other than the firewall built into windows?


Essentially what I am looking to do is use my Win Server 2012 R2 install as HyperV. Then I will install a bunch of VM's on that and setup some environments that I can test with. For example VM's for an RDP server, for an exchange server, domain controller, IIS web server etc...I have taken my Hypervisor and installed a win server VM, when i launch the VM it is getting a 169... IP address. I know there is nothing to give this VM DHCP.


I am wondering if i make all the servers have static IP addresses on a class C network starting with 192.168.1..... then this would be OK, but the default gateway that Hetzner have provided is not in that range so I am not sure where I can go from here.

Any ideas? Would I need to purchase some more public facing IP addresses or can i somehow make this work, i REALLY hope this makes sense! 


I have never really worked with servers that have public facing IP addresses on them before. My experience is usually Servers with private ranges with routers that have port forwarding/NAT setup on them... There is no router here for me to configure and no settings, help please :)



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#2 Wand3r3r


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Posted 13 May 2015 - 02:54 PM

You have no router which begs the question of why don't you have one?


You can't use a gateway that does not exist in the server assigned subnet [class C] so that will not work if you want internet access to the server.


You are correct that only your server software is what is protecting the server from the internet. 

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