lab01- Network Management

nmon1-charlotte

setup with hostname, username, networking (10.0.5.11, remember: add charlotte.local to search domain)
add record to DNS manager

I had trouble reaching the internet on nmon1, then realized fw01 couldn't reach the internet as well.
idk what happened but I rebooted fw01 and it worked again

enable SNMP services on pfSense

web dashboard (10.0.5.2)
services -> SNMP
restart SNMP service

Install and Test SNMP Client on nmon01

sudo yum install net-snmp-utils

Install SNMPD (a SNMP Server) on web01

set up web01 (10.0.5.12, you know the drill by now)
sudo yum install net-snmp-utils net-snmp
The default snmp configuration does not suit our purpose. Make a backup copy of /etc/snmp/snmpd.conf and create a new/blank version.
- sudo cp /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.backup
allow 161/udp through firewall

sudo firewall-cmd --add-port=161/udp --permanent`
sudo firewall-cmd --reload`

enable/start snmpd

sudo systemctl enable snmpd
sudo systemctl start snmpd

install the SNMP Service Feature on AD01 using Server Manager on MGMT

install the SNMP-Tools Remote Administration Feature on MGM01

Enable Remote Management on AD01

Remote Computer Management does not work immediately for our remote AD01 Server due to firewall restrictions as seen in the error message.

You will need to fix this by invoking a remote PowerShell session with AD01 from mgmt01.

SNMP Service Security Properties on AD01

Adjust the SNMP service properties on AD01 to add the SYS265 community string and limit queries to those from nmon01.
Restart the SNMP Service on ad01

Capturing snmp packets nmon01->web01

on web01: tcpdump -i ens192 port 161 -c10 -AAA
on nom01: snmpwalk -Os -c SYS265 -v2c web01-charlotte system

2.5 KiB Raw Blame History