[Nut-upsuser] Antwort: Re: Proxy upsmon

[Roger Price]

On Tue, 23 Feb 2021, marco.hald at crailsheim.de wrote:

> here is a Diagramm of the Connections
>                                             Machine "S"
> +----------------------------+           +--------------------+                                                                          
> |  Socomec UPS               |           |nut-server          |                                                                          
> |  only capable of SNMP      |-----------|Ubuntu Server 20.04 |                                                                          
> |                            |           |with upsd 2.7.4     |                                                                          
> +----------------------------+           +--------------------+                                                                          
>                                                      |                         
> +-----------------------------+                      |                                                                                          
> |  Firewall-1 with upsd 2.6.2 |   Network A          |               
> |  without SNMP Support       |----------------------+                                                                                          
> +-----------------------------+                                                                                                                  
>             | Network B                                                      

Hello Marco, Here in Firewall_1 you are running upsd only?  Isn't it upsmon that 
you should be running?

>             | Network B                                                       
> +-----------------------------+                                                                                                                  
> |  Firewall-2 with upsd 2.6.2 |                                                                                                                  
> |  without SNMP Support       |                                                                                                                  
> +-----------------------------+      

In Firewall_2 you need upsmon to be able to talk to "nut-server" machine S

> My Problem is Firewall-2 can only reach Firewall-1.

I guess that Firewall_1 is supporting two networks, A and B, and that you cannot 
get from a machine on network B to machine S on network A.  Is this correct? 
Do the firewall logs record any rejected traffic?

> Firewall-1 can reach every Device.
> On Firewall-1 the nut-server is configured as Monitor and the shutdown works properly.

When you say "nut-server" one thinks of upsd, not upsmon.  I guess you mean 
"nut-client".

> The Connection from Firewall-2 to Firewall-1 works via netcat.

But does netcat "nut-server" 3493 work on machine Firewall_2 ?

Roger