Re: A Splendid Example Of A Renumbering Disaster

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I expect to be flamed for suggesting it, but why not use the Shared Address Space for this purpose? (http://tools.ietf.org/html/rfc6598)

Cheers,
-Benson


On 11/26/12 11:52 AM, Andrew G. Malis wrote:
As LogMein says, even with the TMobile and Rogers use, it's extremely unlikely that their customers will need to communicate with any hosts in 25/8. That said, I absolutely agree that an IPv4 range devoted to VPNs would be great. I run a personal VPN to my home LAN, and I specifically use different ranges of RFC 1918 space for the addresses in my home and my VPN.

Cheers,
Andy



On Sat, Nov 24, 2012 at 11:36 AM, Paul Wouters <paul@xxxxxxxxx> wrote:
On Sat, 24 Nov 2012, Sabahattin Gucukoglu wrote:

http://b.logme.in/2012/11/07/changes-to-hamachi-on-november-19th/

LogMeIn Hamachi is basically a NAT-traversing layer 2 VPN solution.  They avoided conflicts with RFC 1918 space by hijacking IPv4 space in 5/8, now actively being allocated by LIRs in Europe.  When that didn't work (see link above), they moved to 25/8, allocated to the UK MoD.  While I'm almost sure that they haven't got it quite so wrong this time, following the comments says that the idea was not only a very bad one to start with, it's cost a lot of people a lot of grief that IPv6 was clearly going to mitigate in renumbering.  Perhaps it is why they recommend it per default, if not for the number of applications that would be broken by it.

Both TMobile in the US, and Rogers/Fido in Canada use 25/8. Our IPsec
client per default only allows incoming NAT-T for ranges in RFC1918, due
to security reasons (you don't want them hijacking google's ip range). So
we actually had to add 25/8 to the white list a few years ago.

But, it would be nice to have an IPv4 range dedicated to VPN ranges, so
you can setup things like L2TP tunnels without fear of collision in the
RFC1918 space, although I guess technology has advanced enough to
implement proper segmentation and workarounds for this these days.

Paul



[Index of Archives]     [IETF Annoucements]     [IETF]     [IP Storage]     [Yosemite News]     [Linux SCTP]     [Linux Newbies]     [Fedora Users]