[EAS] CARRIER OUTAGE!??

[ray at electronicstheory.com]

Ed, you are right on the money.

This is NOT a DASDEC specific problem.  The Monroe boxes are working just fine.
 It is the connection.

Early on I did an NMAP which revealed that only 2 ports (80 & 443/http & https)
are open and the rest are blocked/filtered.  Yes, port 25 and 587 are clearly
blocked according to the scan.  Since the boxes in question are connected
directly to the cable modem, they are clearly blocked by the Internet Service
Provider's modem - which they set up.  Since the boxes were working before, I
can only assume that they remotely reconfigured them - all of them - with
similar parameters.

Because I am seeing this on so many boxes across the country, and so many
internet/phone providers - I was asking the group to see if anyone else has seen
a similar trend (wondering if there is some wicked virus roaming that the ISP's
may not be fending off by blocking all unnecessary ports)??

Ray

On September 10, 2012 at 1:42 PM Ed Czarnecki
<ed.czarnecki at monroe-electronics.com> wrote:

> Ray -
>
> The ports required for Email functionality in the DASDEC are port 25, when
> not using authentication, and port 587 when using authentication. These port
> numbers are fixed based on which method you are using. If you have blocked
> these, that may explain the issue.  Maybe someone in IT changed which ports
> were blocked/allowed.
>
> Please feel free to drop and e-mail or call to our customer service - we're
> finding that many (most) issues of this nature are traced back to local
> network configuration.
>
> Ed
>
> Edward Czarnecki, Ph.D.
>   Senior Director -  Strategy, Development & Regulatory Affairs
> 100 Housel Ave. | Lyndonville | NY | 14098
> www.monroe-electronics.com
> www.digitalalertsystems.com
>
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> -----Original Message-----
> From: eas-bounces at radiolists.net [mailto:eas-bounces at radiolists.net] On
> Behalf Of ray at electronicstheory.com
>
> @Eric Adler -
>
> Thanks for the heads-up concerning the known outages.
>
> I understand backhoe fade, (as well as fat-finger fade), but since I can
> ping, nmap, and access get the box's internal web server, I threw that
> possibility out. Ports 80 and 443 work (so it does do CAP and its internal
> web server is functional), but it no longer sends email (logs), and they
> can't be accessed via SSH for troubleshooting/maintenance any more.
>
> The problem "seems" more software than hardware based. All our boxes (both
> working and non-working) are using the same version of software, were tested
> to be fully functional before they left Dallas to parts unknown, and have
> since been working fine but recently (last week or so) failed.
>
> As for their locations, some are east coast (Boston for instance), and some
> are as far west as Arizona. Our network is based out of Dallas, but we have
> stations nationwide exhibiting similar problems.  About 1/10th of our boxes
> across the country are presently showing the same issue.
>
> Firewalls vary from site to site, depending on what the particular carrier
> provides at time of hook-up.
>
> Ray
>
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Ray Dall
Radio Frequency Engineer
Author: Electronics for Sound Engineers

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