CompTIA A+ 1101 2.6 Exam Course Objectives

Описание: Compare and contrast common network configuration
concepts.
• #DNS
#Address
M A
M AAAA
Mail exchanger (MX)
Text (TXT)
M Spam management
(i) DomainKeys Identified Mail (#DKIM )
(ii) Sender Policy Framework (#SPF )
(iii) Domain-based Message Authentication,
Reporting, and Conformance (#DMARC )
• #DHCP
Leases
Reservations
Scope
• Virtual LAN (#VLAN )
• Virtual private network ( #VPN )

#comptia #comptiaa #networking

Here is the script:

sudo apt update
sudo apt upgrade
sudo apt install unbound

sudo nano /etc/unbound/unbound.conf
#Key Config File

server:
verbosity: 1
interface: 0.0.0.0
access-control: 127.0.0.1/8 allow
access-control: 192.168.1.0/24 allow
do-not-query-localhost: no
hide-identity: yes
hide-version: yes


sudo systemctl enable unbound
sudo systemctl status unbound

###########################################
i had an issue solved it via

sudo nano /etc/default/unbound
#add
DAEMON_OPTS=""
#save and exit



#### check to see if ubound is being used
cat /etc/resolv.conf
sudo nano/etc/resolv.conf
nameserver 127.0.0.1
sudo chattr +i /etc/resolv.conf

#flush DNS cache
sudo systemctl restart unbound
sudo systemd-resolve --flush-caches





##########################
#trouble shooting
sudo netstat -tulnp | grep :53

sudo systemctl status unbound

dig google.com @127.0.0.1

#how to block a website example
local-zone: "google.com." static
local-data: "google.com A 0.0.0.0"