[BBLISA] Amazon EC2 Oddly Rejecting Very Specific IP Addresses

[Richard 'Doc' Kinne]

Folks:

I'd like to see if anyone has heard of circumstances like this before.

I have a server on the Amazon EC2 cloud running a website service. This is
largely working well.

However I have one customer that cannot get to it from a specific address.
The IP address of my server is 75.101.149.255. When you do a "whois" on this
it comes up as:

OrgName:    Amazon.com, Inc.
OrgID:      AMAZO-4
Address:    Amazon Web Services, Elastic Compute Cloud, EC2
Address:    1200 12th Avenue South
City:       Seattle
StateProv:  WA
PostalCode: 98144
Country:    US

which makes perfect sense.

We originally thought that Amazon might be blocking access to the service to
specific IP or IP ranges, but based on traceroutes that didn't seem to make
sense.

When my customer tries to do a traceroute from his place to my server he
doesn't even get out of his router:

tracert 75.101.149.255
Tracing route to [75.101.149.255] over a maximum of 30 hops:
  1     1 ms    <1 ms    <1 ms  www.routerlogin.com [10.1.1.1]
  2     *        *        *     Request timed out.

I've never seen anything like that before. I can understand things timing
out when you get to the Amazon area, but timing out before you even get into
the Net proper? That doesn't make sense to me. Everything else seems to work
properly from his location from what he's telling me.

There is a part of me that thinks there may be something wrong somehow with
my customer's address. When I do a "whois" on the customer's address it
comes back as being owned by IANA, which doesn't seem right at all. Also
when I try a traceroute to his address *I* don't get past my router in two
totally separate locations (work, that has one ISP, and home, which has a
very different ISP).

I've never quite seen anything act like this before and I'm not quite sure
how to puzzle it out.

Does anyone have any thoughts?
-- 
Doc Kinne, [KQR]
(From the Gmail Web Interface)
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