nanog mailing list archives
RE: Companies using public IP space owned by others for internal routing
From: Robert Webb <rwebb () ropeguru com>
Date: Mon, 18 Dec 2017 02:49:45 +0000
-----Original Message----- From: Mark Andrews [mailto:marka () isc org] Sent: Sunday, December 17, 2017 9:35 PM To: Robert Webb <rwebb () ropeguru com> Cc: Richard Porter <richard () pedantictheory com>; nanog () nanog org Subject: Re: Companies using public IP space owned by others for internal routingOn 18 Dec 2017, at 1:20 pm, Robert Webb <rwebb () ropeguru com> wrote: Apologies for not responding sooner. This came to light with me on a forum where someone posted that theythought it strange that their MTA received an IP that is assigned to the DoD DNIC.Where I work I have the opposite issue. They have a lot of public IPv4 space and only use it internally never be advertised to the internet.Something I have never agreed With doing.RobertWhy? This is a perfectly legitimate use of the IP addresses. The purpose of assigning addresses is so that they are unique WORLD WIDE in whatever context you wish to use them in. Mark
I going to guess you were talking about the use internally of public IP addresses.. But there are rules governing what to use where. So it is OK to hoard publicly addressable IPv4 IP's for internal use that will never reach the outside world? No the way I have been taught. Maybe I just lack that big picture.. Robert
Current thread:
- Re: Companies using public IP space owned by others for internal routing, (continued)
- Re: Companies using public IP space owned by others for internal routing Mark Andrews (Dec 20)
- Re: Companies using public IP space owned by others for internal routing Lee Howard (Dec 20)
- Re: Companies using public IP space owned by others for internal routing Mark Andrews (Dec 19)
- Re: Companies using public IP space owned by others for internal routing Lee Howard (Dec 20)
- Re: Companies using public IP space owned by others for internal routing joel jaeggli (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Tyler Conrad (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Ca By (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Richard Porter (Dec 17)
- RE: Companies using public IP space owned by others for internal routing Robert Webb (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Mark Andrews (Dec 17)
- RE: Companies using public IP space owned by others for internal routing Robert Webb (Dec 17)
- Re: Companies using public IP space owned by others for internal routing Scott Morizot (Dec 18)
- Re: Companies using public IP space owned by others for internal routing Robert Webb (Dec 18)
- Re: Companies using public IP space owned by others for internal routing Fletcher Kittredge (Dec 19)
- RE: Companies using public IP space owned by others for internal routing Robert Webb (Dec 17)