Nagios Support Forum

Posted: **Sun Apr 03, 2022 10:00 pm**

Hi,

I have installed NSClient on my Windows Server 2019 64bit, and from Nagios server I got warning message "could not fetch information from server".

This in the nsclient.ini

Code: Select all

; in flight - TODO
[/settings/default]

; Undocumented key
password = mypassword

; Undocumented key
allowed hosts = 192.168.0.60


; in flight - TODO
[/settings/NRPE/server]

; Undocumented key
;ssl options = no-sslv2,no-sslv3
allowed ciphers = ALL:!MD5:@STRENGTH
allow arguments = true
allow nasty characters = true
insecure = true
verify mode = none
; Undocumented key
;verify mode = peer-cert

; Undocumented key
;insecure = false


; in flight - TODO
[/modules]

; Undocumented key
CheckExternalScripts = enabled

; Undocumented key
CheckHelpers = enabled

; Undocumented key
CheckNSCP = enabled

; Undocumented key
CheckDisk = enabled

; Undocumented key
WEBServer = enabled

; Undocumented key
CheckSystem = enabled

; Undocumented key
NSClientServer = enabled

; Undocumented key
CheckEventLog = enabled

; Undocumented key
NSCAClient = enabled

; Undocumented key
NRPEServer = enabled

use ssl = 0

performance data = 1

port = 12489

Command from Nagios server

Code: Select all

[root@localhost ~]# /usr/local/nagios/libexec/check_nt -H 192.168.11.70 -p 12489 -v UPTIME
could not fetch information from server

[root@localhost ~]# /usr/local/nagios/libexec/check_nt -H 192.168.11.70 -p 12489 -v CLIENTVERSION
could not fetch information from server

Posted: **Mon Apr 04, 2022 1:23 pm**

YUDI wrote:Hi,
and from Nagios server I got warning message "could not fetch information from server".

Can you connect to port 12489/tcp from the Nagios server?

I recommend using nmap to test this if you haven't already.

For example:

Code: Select all

sudo nmap -sT -v -p 12489 192.168.11.70

Posted: **Mon Apr 04, 2022 8:49 pm**

atc0005 wrote:
Can you connect to port 12489/tcp from the Nagios server?

I recommend using nmap to test this if you haven't already.

For example:
Code: Select all
sudo nmap -sT -v -p 12489 192.168.11.70

Hi,

This is the result

Code: Select all

[root@localhost ~]# sudo nmap -sT -v -p 12489 192.168.11.70

Starting Nmap 6.40 ( http://nmap.org ) at 2022-04-05 08:46 WIB
Initiating Ping Scan at 08:46
Scanning 192.168.11.70 [4 ports]
Completed Ping Scan at 08:46, 0.20s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 08:46
Completed Parallel DNS resolution of 1 host. at 08:46, 0.17s elapsed
Initiating Connect Scan at 08:46
Scanning 192.168.11.70 [1 port]
Discovered open port 12489/tcp on 192.168.11.70
Completed Connect Scan at 08:46, 0.00s elapsed (1 total ports)
Nmap scan report for 192.168.11.70
Host is up (0.00065s latency).
PORT      STATE SERVICE
12489/tcp open  unknown

Read data files from: /usr/bin/../share/nmap
Nmap done: 1 IP address (1 host up) scanned in 0.48 seconds
           Raw packets sent: 4 (152B) | Rcvd: 1 (40B)

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