Remotely connect to the windows 2008 console.

Windows server won't let you to connect to the physical console session remotely.
Bot that's still possible.

Connect to a new session, then execute the following command:

tscon.exe 1

replace "1" with the console session if it's differ. To know it, open the task manager's Users tab and look for the console session id number.

Depricate an IP address

Say, a server has a number of IP addresses, but we don't want some addresses to be used as outbound.

ipconfig /all   gives us which address is preferred:

 Autoconfiguration Enabled . . . . : Yes
 IPv4 Address. . . . . . . . . . . : 2.68.18.2(Preferred)
 Subnet Mask . . . . . . . . . . . : 255.255.255.248
 IPv4 Address. . . . . . . . . . . : 2.68.18.3(Preferred)
 Subnet Mask . . . . . . . . . . . : 255.255.255.248

To make an address not preferred, remove it from the interface and recreate it again using the netsh:
 
interface ipv4 add address LAN 2.68.18.2 mask=255.255.255.248 preferredlifetime=0

Exchange health test

In order to run the MS Exchange Best Practices Analyzer, the network interface which address is resolved from the exchange server name has to have File Sharing enabled. Also the Remote Registry service is required to be started.