Re: SBS Warning: Routable IP Address
- From: F3 <f3_evans@xxxxxxxxxxx>
- Date: Tue, 08 Jul 2008 11:54:17 -0500
Hufaunder,
There are certain IP addresses (and ranges thereof) which are "reserved" for specific use. Examples are 127.0.0.1 which is a loop back address (localhost). You can use 127.0.0.1 to ping yourself, go to a website hosted on your own machine (assuming web hosting software is installed, etc.).
There are also other address ranges, such as 10.xxx.xxx.xxx and 192.168.xxx.xxx which are reserved for private use only. Consequently, addresses in these ranges (and the 127.xxx.xxx.xxx, and a couple others) are never used for public Internet IP addresses. For a private, internal network behind a firewall, router, NAT device, etc., using a public IP address range is a bad idea.
Your 172.200.0.xxx address range is NOT recommended for an internal network. However, if that is your Internet, public IP address range and you are NOT using NAT, go ahead. But I wouldn't recommend it. For security reasons, dropping a hardware firewall and a NAT router between the outside world and your internal network is a very wise idea.
Fred
hufaunder wrote:
During installation of SBS I get the warning:.
The network adapter selected to access the local network is assigned a routable IP address. As a result, the DHCP service on the server cannot be installed and then configured by Setup. It is recommended that you use a private IP address for your server's local network adapter, as this is a more secure configuration.
Here are the settings on our network:
SBS: 172.200.0.5
AD Server: 172.200.0.1
Gateway: 172.200.0.1
DHCP: 172.200.0.50 and up
Should we use different IP addresses? Note that we have about 10 devices with static IPs and maybe another two dozen devices with DHCP. What would we have to do if we keep these IP addresses?
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