nanog mailing list archives

Re: Looking for DISA/DOD contact


From: Mike Tindor <mtindor () gmail com>
Date: Sat, 29 Jun 2024 18:24:04 -0400

Thanks.  That makes a little more sense to me.   I know the questions DISA
asked me when I called them, and I couldn't imagine just having the
MIL-side email correspondent open a ticket directly with DISA.  They would
likely be more overwhelmed than I was.  I'll talk to a couple of my
customers who do biz with DOD on Monday and will ask them to reach out to
their MIL contacts and request that the MIL contacts open a ticket with
their IT.

Since this has been going on now, some of my customers have switched
temporarily to using Gmail/Yahoo just to stay in touch with their MIL
contacts.   So I know they can get the message through.

Mike

On Sat, Jun 29, 2024 at 12:55 PM Mike Tindor <mtindor () gmail com> wrote:

Thanks again,Scott.  I'll be patient!

Mike Tindor


On Sat, Jun 29, 2024 at 12:18 PM Scott Q. <qmail () top-consulting net>
wrote:

All that sounds very familiar, I'm 100% sure it's the same issue.

As I said, there are DISA folks here, they might reach out and give you
further steps. They did in my case, you just have to be more patient / on
the ball than I was...

Good luck!


On Saturday, 29/06/2024 at 11:44 Mike Tindor wrote:

Scott,

Thanks for responding.  Unfortunately, I think my situation is a little
more dire, or at least involved.   I probably should have said this before,
but I had done TCP 25 outbound testing from our /23 to various .MIL MX's
that I know were responding and could not establish a connection / get an
SMTP banner.   I could then go to Azure, or Digital Ocean, or somewhere
else that I have a box and am able to make the outbound connection to the
same MIL MXs that wouldn't respond to me from our /23.

So it isn't a simple case of DNS not resolving, although we certainly did
notice that issue.  Fortunately, we do have nameservers in place that are
external to our /23 and which are able to actually do the resolving.   But
your comment does remind that this definitely is not just a TCP 25 issue,
as the MIL DNS servers are not responding to queries from our /23 hosts.

The situation is difficult for multiple reasons:

1.  inabiity to engage somebody from the other end - DISA
2.  Unwillingness on my part to stab at a hornets nest and poke around
trying to verify connections (other than TCP 25 to known MIL MXs) in
DOD-land.
3.  Not knowing exactly where to go from here

The latest/last thing DISA told me was that I would have to get one of
the people with MIL email addresses who can't email our customers to
actually open a ticket with DISA.   And that is fraught with problems since
even if a MIL email user did open a ticket, they would not have any
information about our network to convey to the Helpdesk -- and would have
no way of answering questions that the Helpdesk asked, and also wouldn't be
able to do any troubleshooting.

I did realize a few days ago we had no ROA for the specific /23, and so I
created one at ARIN.   And we had no specific route object published for
our /23, and I got one added.   Been trying to clean up some old (and
invalid) stuff that is in RADB from our larger /19, since we don't even own
all the space in the /19 anymore and are only actively using a /23 from
what we have left.   Hoping to get that taken care of Monday.

Everything has worked fine for 26 years, until Jun 1.   But things
change, and I'm obviously behind the times given that I didn't have proper
ROA and route object in place.

Mike Tindor

On Sat, Jun 29, 2024 at 11:26 AM Scott Q. <qmail () top-consulting net>
wrote:

There are DISA folks lurking here.

I had a similar issue where our block was labeled as residential by
their new firewall, and DISA front-desk isn't yet trained on this mechanism
so they can't help.

I escalated the issue to a lot of groups but in the end I gave up, too
much bureaucracy. The issue is simply DNS - their DNS servers don't let you
resolve. So I simply set 8.8.8.8 as the resolver for *.mil and it temp
(permanently) fixed the problem.

Scott


On Saturday, 29/06/2024 at 09:16 Mike Tindor wrote:

Hi folks,

I'm looking for a DISA/DOD contact who feels that my issue has merit.
I've tried the DISA Helpdesk and have been told since I'm a commercial
entity with no affiliation with the DOD, they can't help me.

The issue at hand is that our /23 netblock has lost communication (at
least email TCP 25) with AS345 / AS721 as of May 31, 2024 and I cannot
figure out why.   We are in a Flexential datacenter in Richmond VA and use
Flexential for transport.   We cannot send emails to .MIL or receive emails
from .MIL.  It is not that they are being rejected on either end.   The
deliveries are timing out and being returned to sender, from both sides.

I don't know if DISA/DOD has a block on our ASN  and-or /23, or if there
is a routing issue somewhere between us and AS345 / AS721.  I had asked the
Flexential folks to look into it from their side, and they indicated that
historic data does indeed show that there TCP 25 communications to and fro
between us and AS345 prior to June 1, but nothing from June 1 onward.  And
all they could say was that they (Flex) were not in any way blocking.  And
I'd agree with that.

As you can imagine, my customers are not happy with not being able to
communicate with their family / friends via email in the MIL domains, and
our customers who are vendors / contractors cannot do business with the
military effectively if they cannot send/receive emails.

 us --> Flexential --> GTT --> Level3 --> Qwest --> ? --> AS345 / AS721

Any idea where one would go next?   Is it likely that any of those
entities further upstream like GTT / Level3 / Qwest would even assist since
we are not their customer?

Thanks for your time!

Mike Tindor



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