nanog mailing list archives

Re: ARIN Policy on IP-based Web Hosting


From: Deepak Jain <deepak () ai net>
Date: Thu, 31 Aug 2000 15:59:16 -0400 (EDT)



This is not meant at anyone personally, its just something I noticed. 

When we are deciding that IP savings, etc are worth it, why not make all
Cable/DSL/Dialup providers use NAT to map access logins to a small pool of
IPs too? The software to do that transparently is already available for a
very high percentage of applications. Heck, even upstreams could then NAT
their downstreams' pools of IPs. We could run the whole internet off a
single class C again.

This would of course be an inconvenience to some networks that use a lot
of applications that haven't been updated, but we're sure the savings are
worth the pain too. 

---

I guess the point/concern I have is that the largest providers can now
pick up /13s because they use that many IPs in 3 months, but if you
subtract out the number of truly unique IPs even the largest network would
absolutely need, applying all available technology, the number might be as
low as a few hundred unique IPs.

Deepak Jain
AiNET


On Thu, 31 Aug 2000, Alec H. Peterson wrote:


"John A. Tamplin" wrote:

Well, if the policy is that you have to use name-based hosting everywhere
feasible and do something different for those customers that need
something different, that can be quite a hardship on existing setups.
For example, re-engineering all the tools to create and maintain vdom
services, changing existing customer setups, etc.  It is certainly easier
to treat all hosting customers alike, rather than have completely
separate setups and then have to change a customer from one to the other
when they add or delete services (including downtime).

That was also brought up at the meeting, however it was generally agreed
that the address savings were worth the work.


Another issue nobody has mentioned is security between virtual servers.
Under name-based hosting, they all run as the same user-id and thus to get
the same security you have with separate IP-based servers you have to put
all the access conrol checks in all the tools that can be used.  This can be
hard if not impossible to do when you allow full shell access to the files
used by the server.

Not if you chroot() the user into their file space.  That may not be ideal,
but there are ways to deal with it.

Alec

-- 
Alec H. Peterson - ahp () hilander com
Staff Scientist
CenterGate Research Group - http://www.centergate.com
"Technology so advanced, even _we_ don't understand it!"






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