[K12OSN] Need help integrating LTSP Server into school network

Micha Silver micha at arava.co.il
Fri Feb 1 11:21:34 UTC 2008

Sudev Barar wrote:

> On 01/02/2008, Micha Silver <micha at arava.co.il> wrote:
>> I think that's a routeable address. There are internet sites with "real"
>> address in the range 172.168.x.x that you won't be able to reach if your
>> internal LAN has those addresses.
>> You might do better to choose a subnet in the range 172.16.x.x - 172.31.x.x
> AFAIK this is local subnet range as is 10...
If I'm not mistaken, Devry chose 172.168.x.x as his subnet. That's not a 
local subnet range.
 From rfc1918:

3. Private Address Space

   The Internet Assigned Numbers Authority (IANA) has reserved the
   following three blocks of the IP address space for private internets:        -  (10/8 prefix)      -  (172.16/12 prefix)     - (192.168/16 prefix)

   We will refer to the first block as "24-bit block", the second as
   "20-bit block", and to the third as "16-bit" block. Note that (in
   pre-CIDR notation) the first block is nothing but a single class A
   network number, while the second block is a set of 16 contiguous
   class B network numbers, and third block is a set of 256 contiguous
   class C network numbers.

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