Nagios Support Forum

Hi Team,

Please let us know if Port monitoring on Virtual Network Gateways is possible via Nagios XI ?

If yes, what all details are required to get this setup.

Could you please help us with detailed steps for configuring the same in Nagios XI.

Thanks
Nitin Parate

If the virtual network gateway supports SNMP you can probably use the Router/Switch Wizard to set up checks that monitor port status. See https://library.nagios.com/library/prod ... nagios-xi/.

Hi Team,
Thanks for below update. We will try below approach.

Keep us posted

Hi Team,
We have enabled the SNMP string on network gateways to monitor the ports.
We are still facing issues in configuring the same as port details are not getting captured in Nagios XI while configuring it.

Please refer attached screenshot for details.

What is the output of these commands when you run them on the XI command line:
to install nmap you can run:

Hi Team,

PFB details on the requested commands on Nagios XI server:

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2020.05.29 19:00:37 =~=~=~=~=~=~=~=~=~=~=~=
/usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed '100000000' '[email protected]:161::::2'
Subroutine SNMP_Session::pack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib/mrtg2/SNMP_Session.pm line 149.
Subroutine SNMP_Session::unpack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib/mrtg2/SNMP_Session.pm line 149.
Subroutine SNMPv1_Session::pack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib/mrtg2/SNMP_Session.pm line 604.
Subroutine SNMPv1_Session::unpack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib/mrtg2/SNMP_Session.pm line 604.
--base: Get Device Info on [email protected]:161::::2
SNMP Error:
no response received
SNMPv2c_Session (remote host: "10.145.162.240" [10.145.162.240].161)
community: "public"
request ID: -333006938
PDU bufsize: 8000 bytes
timeout: 2s
retries: 5
backoff: 1)
at /usr/bin/../lib/mrtg2/SNMP_util.pm line 651.
SNMPWALK Problem for 1.3.6.1.2.1.1 on [email protected]:161::::2:v4only
at /usr/bin/cfgmaker line 951.
WARNING: Skipping [email protected]:161::::2 as no info could be retrieved

Use of uninitialized value $comment_sysdescr in substitution (s///) at /usr/bin/cfgmaker line 379.
Use of uninitialized value $sysname in concatenation (.) or string at /usr/bin/cfgmaker line 412.
Use of uninitialized value $comment_sysdescr in concatenation (.) or string at /usr/bin/cfgmaker line 412.
Use of uninitialized value $syscontact in concatenation (.) or string at /usr/bin/cfgmaker line 412.
Use of uninitialized value $syslocation in concatenation (.) or string at /usr/bin/cfgmaker line 412.
# Created by
# /usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed 100000000 [email protected]:161::::2


### Global Config Options

# for UNIX
# WorkDir: /home/http/mrtg

# or for NT
# WorkDir: c:\mrtgdata

### Global Defaults

# to get bits instead of bytes and graphs growing to the right
# Options[_]: growright, bits

EnableIPv6: no

######################################################################
# System:
# Description:
# Contact:
# Location:
######################################################################


]0;root@eu2napu002:~[root@eu2napu002 ~]# /usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed '100000000' '[email protected]:161::::2'
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[Cyum -y install nmap[Knmap 10.145.162.240 -p 161 -sU
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C/usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed '100000000' '[email protected]:161::::2'
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[Cnmap 10.145.162.240 -p 161 -sU[K

Starting Nmap 6.47 ( http://nmap.org ) at 2020-05-29 19:01 BST
Nmap scan report for 10.145.162.240
Host is up (0.044s latency).
PORT STATE SERVICE
161/udp open snmp

Nmap done: 1 IP address (1 host up) scanned in 0.15 seconds
]0;root@eu2napu002:~[root@eu2napu002 ~]# nmap 10.145.162.240 -p 161 -sU
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C/usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed '100000000' '[email protected]:161::::2'
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[Cyum -y install nmap[Knmap 10.145.162.240 -p 161 -sU
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C/usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed '100000000' '[email protected]:161::::2'
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[Cnmap 10.145.162.240 -p 161 -sU[K
[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[C[11Pyum -y install nmap
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: centos.serverspace.co.uk
* extras: centos.serverspace.co.uk
* updates: mirror.netweaver.uk
https://repo.nagios.com/nagios/7/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's Certificate issuer is not recognized."
Trying other mirror.
It was impossible to connect to the CentOS servers.
This could mean a connectivity issue in your environment, such as the requirement to configure a proxy,
or a transparent proxy that tampers with TLS security, or an incorrect system clock.
You can try to solve this issue by using the instructions on https://wiki.centos.org/yum-errors
If above article doesn't help to resolve this issue please use https://bugs.centos.org/.

https://repo.nagios.com/nagiosxi-deps/7 ... repomd.xml: [Errno 14] curl#60 - "Peer's Certificate issuer is not recognized."
Trying other mirror.
Package 2:nmap-6.47-1.x86_64 already installed and latest version
Nothing to do
]0;root@eu2napu002:~[root@eu2napu002 ~]# exit
logout
]0;nagios@eu2napu002:~You have new mail in /var/spool/mail/nagios
[nagios@eu2napu002 ~]$ exit
logout

Thanks,
Nitin Parate

It looks like the port is open but the XI machine isn't getting a response. Can you tell me more about what the device is that you are scanning?

Hi Team,

We are looking for Cisco Network devices to get configured with port monitoring.

Thanks
Nitin Parate

Make sure that SNMP is configured on the device correctly. https://www.cisco.com/c/en/us/td/docs/i ... pport.html may help but I would try to find documentation specific to your device.