[HamWAN PSDR] PSDR Digest, Vol 97, Issue 2

Rob Martin rgmrob at yahoo.com
Sat Mar 6 22:15:27 PST 2021 

 If anyone is going up to Rattlesnake or Capital PEAK, I have a very simple task I would like someone to perform on my behalf.
On both sites, there was a problem with my remote AC power switch. I would like someone to take a new part to the site, and swap out the one that is there already. 

I have new switches ready to go.
Thanks.
RobK7QJ

    On Saturday, March 6, 2021, 12:00:17 PM PST, psdr-request at hamwan.org <psdr-request at hamwan.org> wrote:  
 
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Today's Topics:

  1. Re: Rattlesnake DNR shack is down (Bart Kus)
  2. Re: Rattlesnake DNR shack is down (Fred Moses)


----------------------------------------------------------------------

Message: 1
Date: Sat, 6 Mar 2021 09:46:15 -0800
From: Bart Kus <me at bartk.us>
To: Puget Sound Data Ring <psdr at hamwan.org>, Stephen Kangas
    <stephen at kangas.com>, netops at hamwan.org
Subject: Re: [HamWAN PSDR] Rattlesnake DNR shack is down
Message-ID: <1947e401-ede2-3fde-387d-8bdec70cf98c at bartk.us>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Stephen and I went to visit Rattlesnake yesterday to figure out what's 
wrong.  The building had power, but the new UPS was powered off.  Its 
network control card had a light, indicating it was alive, just no 
network to link to.  I pulled the 120V plug, and a relay clicked but UPS 
did not change state.  I restored 120V power, and a relay clicked but 
UPS did not change state.  I unplugged/replugged the display, and it 
flashed all LEDs and went back to indicating off state (no LEDs).  
Finally I pressed power button and everything powered back up normally.

I suspected the UPS software had been unintentionally set to stay 
powered off after it ran out of battery juice, and then power was 
restored.  I checked the settings thoroughly, and everything looks like 
it was set to tell the UPS to power back on after it had shut down from 
battery exhaustion.  Only a test will verify this is indeed working as 
intended though.

I started setting up event notification from the UPS and making sure our 
management system can monitor it too, and noticed something really 
weird. *The defaults in the UPS software apparently leave a 
write-enabled SNMP account with the default credentials of "private", 
with access allowed from anywhere (IP 0.0.0.0).* I'm now wondering if 
someone intentionally sent an SNMP write command to some OID that told 
the UPS to power off?  Does anyone have experience with APC UPSes that 
can verify these insane defaults and that there is some OID that can 
command the UPS to power off?

SNMP write access has been disabled on both new UPSes now, and firewall 
rules installed to prevent general internet access.

--Bart


On 2/28/2021 3:37 PM, Bart Kus wrote:
> No, the DMR repeater is in the smaller shack, which has its own 
> backbone feed from Baldi.  That half of Rattlesnake is alive.
>
> --Bart
>
>
> On 2/28/2021 12:28 PM, Stephen Kangas wrote:
>> If the DNR shack had power out, wouldn't that also break the inet 
>> link for the AF7PR DMR repeater inet linkage that is hard-wired from 
>> the smaller secast shack?  That repeater is still linked (just tested 
>> it via Parrot).
>>
>> Stephen W9SK
>>
>>
>> -----Original Message-----
>> From: PSDR <psdr-bounces at hamwan.org> On Behalf Of Bart Kus
>> Sent: Sunday, February 28, 2021 12:23 PM
>> To: netops at hamwan.org; Puget Sound Data Ring <psdr at hamwan.org>
>> Subject: [HamWAN PSDR] Rattlesnake DNR shack is down
>>
>> It looks like the DNR building is completely without power.  I tried 
>> to check if UPS2.Rattlesnake was on battery, but the DHCP server is 
>> in the DNR building so the UPS lost its lease.  I'm about to head out 
>> here for something else, but maybe someone can stand up a temporary 
>> DHCP to get the UPS back online and check battery status.
>>
>> --Bart
>>
>> _______________________________________________
>> PSDR mailing list
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Message: 2
Date: Sat, 6 Mar 2021 12:51:23 -0500
From: Fred Moses <fred at moses.bz>
To: Puget Sound Data Ring <psdr at hamwan.org>
Cc: netops at hamwan.org
Subject: Re: [HamWAN PSDR] Rattlesnake DNR shack is down
Message-ID: <56958DB9-2A09-4272-A1DC-2F9E2886DD34 at moses.bz>
Content-Type: text/plain; charset="utf-8"

Yes that is the default on those cards..  The CyberPower cards are set that way too.  We change and then disable the read/write string as part of our setups.  We also stick our UPS’s and PDU's in a management subnet for added fun.

--
Fredric Moses - W8FSM - WQOG498

> On Mar 6, 2021, at 12:46 PM, Bart Kus <me at bartk.us> wrote:
> 
> Stephen and I went to visit Rattlesnake yesterday to figure out what's wrong.  The building had power, but the new UPS was powered off.  Its network control card had a light, indicating it was alive, just no network to link to.  I pulled the 120V plug, and a relay clicked but UPS did not change state.  I restored 120V power, and a relay clicked but UPS did not change state.  I unplugged/replugged the display, and it flashed all LEDs and went back to indicating off state (no LEDs).  Finally I pressed power button and everything powered back up normally.
> 
> I suspected the UPS software had been unintentionally set to stay powered off after it ran out of battery juice, and then power was restored.  I checked the settings thoroughly, and everything looks like it was set to tell the UPS to power back on after it had shut down from battery exhaustion.  Only a test will verify this is indeed working as intended though.
> 
> I started setting up event notification from the UPS and making sure our management system can monitor it too, and noticed something really weird.  The defaults in the UPS software apparently leave a write-enabled SNMP account with the default credentials of "private", with access allowed from anywhere (IP 0.0.0.0).  I'm now wondering if someone intentionally sent an SNMP write command to some OID that told the UPS to power off?  Does anyone have experience with APC UPSes that can verify these insane defaults and that there is some OID that can command the UPS to power off?
> 
> SNMP write access has been disabled on both new UPSes now, and firewall rules installed to prevent general internet access.
> 
> --Bart
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