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Detected an unauthorized user attempting to access the SNMP interface from NAGIOS_IP

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horizn_apc
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Posted: ‎2021-07-01 06:07 AM

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Posted: ‎2021-07-01 06:07 AM

Detected an unauthorized user attempting to access the SNMP interface from NAGIOS_IP

This was originally posted on APC forums on 10/7/2014


Hi,

I am trying to configure Smart-UPS 1500 RM for Nagios. But there is only "SNMP problem - No data received from host" message in Nagios, and "Detected an unauthorized user attempting to access the SNMP interface from Nagios_IP" in UPS Log file.

How this should be configured?, because currently I have checked "Enable SNMPv1 access" box: in Configuration -> Network -> SNMPv1 -> Access

and I have added Nagios IP address in: Configuration -> Network -> SNMPv1 -> Access Control.

what is wrong?

Network Management Card AOS: v6.2.0

Smart-UPS & Matrix-UPS APP: v6.2.0

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BillP
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Posted: ‎2021-07-01 06:08 AM

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Posted: ‎2021-07-01 06:08 AM

This reply was originally posted by Angela on APC forums on 10/8/2014


This message means that Nagios is trying to access the Network Management Card but they are unauthorized to so the request is denied. So, Nagios is trying to read or write when it does not have permission to (do you have a configuration in the NMC to both read and write?), or the community name/string for the permission does not match. You can also leave the IP address as 0.0.0.0 in the Network Management Card for each read/write as a test to see if anything changes as that will allow any IP to access it because it could also be caused by an IP address that is being blocked (which I know you said you added it to the Network Management Card configuration).

See Answer In Context

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BillP
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Posted: ‎2021-07-01 06:07 AM

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Posted: ‎2021-07-01 06:07 AM

This reply was originally posted by Angela on APC forums on 10/7/2014


You need to verify the community names/strings are set properly on Nagios and on the NMC under Configuration->Network->SNMPv1->Access Control. The defaults are public and private and you may need to change those if they have been changed on Nagios side (which leaving them as default is not typically good practice for security reasons).

Here are some screenshots:

Mine is not configured. So, I'd click on the hyperlink for public,

2489_SNMP1.jpg

Then, edit 'public' to match what is programmed in the Nagios Communty name/string settings for read access. Repeate for Write/Write+ access as necessary.

2490_SNMP2.jpg

This message is basically telling you that Nagios is trying to read and/or write data but is not authorized to because something is set wrong. After you verify the community names, verify they match the access type like I mentioned - meaning if you want to write, make sure the community name or string you have in Nagios matches the NMC configuration for write access.

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horizn_apc
Crewman horizn_apc
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Posted: ‎2021-07-01 06:07 AM

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Posted: ‎2021-07-01 06:07 AM

This was originally posted on APC forums on 10/7/2014


I have configured it for my community. This was my first thing.

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horizn_apc
Crewman horizn_apc
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Posted: ‎2021-07-01 06:08 AM

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Posted: ‎2021-07-01 06:08 AM

This was originally posted on APC forums on 10/7/2014


and of coruse I have over 40 servers and HP network switches in my Nagios.

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BillP
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Posted: ‎2021-07-01 06:08 AM

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Posted: ‎2021-07-01 06:08 AM

This reply was originally posted by Angela on APC forums on 10/8/2014


This message means that Nagios is trying to access the Network Management Card but they are unauthorized to so the request is denied. So, Nagios is trying to read or write when it does not have permission to (do you have a configuration in the NMC to both read and write?), or the community name/string for the permission does not match. You can also leave the IP address as 0.0.0.0 in the Network Management Card for each read/write as a test to see if anything changes as that will allow any IP to access it because it could also be caused by an IP address that is being blocked (which I know you said you added it to the Network Management Card configuration).

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