North American Network Operators Group

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Re: ARIN Policy on IP-based Web Hosting

  • From: Steve Gibbard
  • Date: Wed Aug 30 17:00:11 2000

On Tue, 29 Aug 2000, John Fraizer wrote:

> Name-based virtual hosting does not work in many, MANY cases.  Beyond
> this, if you have multiple customers on a single IP address and one of
> them is an idiot and spamvertizes their website, several providers have a
> policy of nullrouting the /32.  Now, not only does it kill a single site
> but, potentially hundreds!

To be fair, that seems like much better argument against nullrouting
website /32s in retaliation for spam than against using the same IP
address for multiple websites where feasable.

There are plenty of things people have done in retaliation for spam,
including blocking /32s, whole /24s, whole CIDR blocks, or whole ASNs.
With any of these approaches there are potential problems with
inadvertently blocking things that shouldn't be blocked, and anybody doing
such blocking should think about that and figure out whether the blocking
is really something they want to do.  If an ISP intentionally or
inadvertently blackholes something their customers think they're paying
for access to, that really sounds like a problem with the ISP doing the
blocking, that the ISP can easily fix if they want to (and that can cause 
their customers to go elsewhere if they don't), rather than a problem at
ARIN or at the web hosting company.

That's not to say that this ARIN policy doesn't have other problems, but
many of them have already been well covered in this discussion.


Steve Gibbard				[email protected]