I have a cloud based virtual machine from my client's hosting company. The sole purpose of the VM instance is for the clients public facing ASP.net web site.
The VM instance had just a bare installation of Windows Server 2008 R2 on it and I installed the following:
- IIS
- Network Policy and Access Server
- MSSQL 2012
I am able to remote desktop and connect to MSSQL remotely as I have opened the respective firewall ports via the hosting company control panel firewall.
Recently, I have noticed that there is a group of computers with IP addresses all over the world attempting to brute-force the Administrator and sa account.
I subsequently disabled both of those accounts as a precaution and do not plan on re-enabling them. However, the repeated brute force continues on these accounts.
I tried to set up VPN access on the Windows Server but can not get it working. I followed the tutorials:here and here and here..
When I try to connect via VPN I notices the following messages in the event viewer:
Unable to contact a DHCP server. The Automatic Private IP Address 169.254.xxx.xx will be assigned to dial-in clients. Clients may be unable to access resources on the network.
This indicates that DHCP was not installed. When I go to install DHCP I am presented with so many options it is beyond me.
So, my questions is: Since I have a working live client ASP.net application running on
the VM instance with a fixed IP (4x.2x.13x.xx) / www.clientssite.com.
Will installing the DHCP role potentially mess-up / take down the live site? Will DHCP keep my site working under IIS and I can just create the DHCP with a range of something like 10.9.8.10 to 10.9.8.50 ? Is this likely to fix my VPN connection issue which
is the ultimate goal.