How do I configure the FIREWALL on the windows SERVER CORE?

To configure the FIREWALL on the windows SERVER CORE:

Use the following command.

netsh advfirewall

For example, to enable remote management from any MMC snap-in, type the following:

netsh advfirewall firewall set rule group="Remote Administration" new enable=yes

Notes: You can also use the Windows Firewall snap-in from a computer running Windows Vista or Windows Server 2008 to remotely manage the firewall on a server running a Server Core installation. To do this, you must first enable remote management of the firewall by running the following command on the computer running a Server Core installation:

netsh advfirewall set currentprofile settings remotemanagement enable

How do Enable or Disable APIPA in the TCP/IP stack for Windows Server 2008 ?

IPAutoconfigurationEnabled

Key: Tcpip\Parameters

Value Type: REG_DWORD—Boolean

Valid Range: 0, 1 (false, true)

Default: 1 (true)

Description: This value enables or disables IPv4 autoconfiguration using APIPA.

 

Note: This value is generally setup globally and not locally

How to enable Multicast Forwarding in the TCP/IP stack for Windows Server 2008

EnableMulticastForwarding

Key: Tcpip\Parameters

Value Type: REG_DWORD—Boolean

Valid Range: 0, 1 (false, true)
Default: 0 (false)
Description: The routing service uses this value to control whether or not IP multicasts are forwarded. This value is created by the Routing and Remote Access service.

Enabling ECN (Explicit Congestion Notification) which is now included in the TCP/IP stack for Windows Server 2008

What is ECN?
Explicit Congestion Notification (ECN) is an extension to the Internet Protocol and is defined in RFC 3168 (2001). ECN allows end-to-end notification of network congestion without dropping packets.The Addition of Explicit Congestion Notification (ECN) to IP, states that with the addition of active queue management (for example, WRED) to the Internet infrastructure, routers are no longer limited to packet loss as an indication of congestion.

ECN and Windows Operating Systems
ECN has now been added to the TCP/IP stack in the following Windows Operating Systems:

1. Windows Vista
2. Windows 7
3. Windows Server 2008

How do we enable ECN is Windows Operating System?

1. Open a command prompt as an adminstrator
2. Type "netsh int tcp show global"this will show your current TCP/IP state
3. To enable ECN, in command prompt type:"netsh int tcp set global ecncapability=enabled"
4. To enable CTCP (Compound TCP)in command prompt type:"netsh int tcp set global congestionprovider=ctcp"
5. To verify changes Type "netsh int tcp show global"