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Date:      Sat, 8 Dec 2001 23:05:44 -0500
From:      "Andrew C. Hornback" <achornback@worldnet.att.net>
To:        "Joe & Fhe Barbish" <barbish@a1poweruser.com>, "FBSD Questions" <questions@FreeBSD.ORG>
Subject:   RE: internal private IP address standards?
Message-ID:  <000601c18066$c61a0ca0$6600000a@ach.domain>
In-Reply-To: <LPBBIGIAAKKEOEJOLEGOIEOJCIAA.barbish@a1poweruser.com>

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> -----Original Message-----
> From: owner-freebsd-questions@FreeBSD.ORG
> [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Joe & Fhe
> Barbish
> Sent: Saturday, December 08, 2001 9:53 AM
> To: FBSD Questions
> Subject: internal private IP address standards?
> 
> When setting up a new FBSD box and LAN environment behind it, 
> what are the rules or standards for selecting the IP address 
> numbering scheme. I have read unrelated documentation that calls
> this the internal IP address scheme or private IP address. 
> The mandatory requirement is that these IP numbers will never
> be seen by the out side world. That being said, I take it that
> I can use any IP address numbers I want. 

	Most people that I know of use the address blocks set aside in RFC 1918.  

"3. Private Address Space

   The Internet Assigned Numbers Authority (IANA) has reserved the
   following three blocks of the IP address space for private internets:

     10.0.0.0        -   10.255.255.255  (10/8 prefix)
     172.16.0.0      -   172.31.255.255  (172.16/12 prefix)
     192.168.0.0     -   192.168.255.255 (192.168/16 prefix)" - RFC 1918

Full text can be found at:
http://www.faqs.org/rfcs/rfc1918.html

--- Andy


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