Install apache, mod_ssl, net-snmp and php72 modules

yum install httpd24 mod24_ssl.x86_64 php72 net-snmp net-snmp-utils php72 php72-xml php72-session php72-sockets php72-ldap php72-gd php72-gmp php72-intl php72-mbstring php72-mysqlnd php72-pdo php72-process php72-snmp php72-mysql php72-pear php72-c...

Read more

Ubuntu

sudo apt-get update -yqq
sudo apt-get install -yqq p7zip-full

Fedora or CentOS / RHEL

CentOS 7.x Download and install manually

wget https://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/epel/7/x86_64/Packages/p/p7zip-16.02-10.el7.x86_64.rpm
wget https://www.mirrorservice.org/s...

Read more

Update and install the Let's Encrypt client

Install

sudo apt-get update
sudo apt-get install letsencrypt python-letsencrypt-apache

Invoke letsencrypt

sudo letsencrypt --apache -d 

Automate the renewal process

letsencrypt renew renews all the domains on the server secured wi...

Read more

1. Delete all existing rules

iptables -F

2. Set default chain policies

iptables -P INPUT DROP

iptables -P FORWARD DROP

iptables -P OUTPUT DROP

3. Block a specific ip-address

BLOCK_THIS_IP="x.x.x.x"

iptables -A INPUT -s "$BLOCK_THIS_IP" -j DROP

4. Allow ALL incoming SSH

iptables -...

Read more