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February 17, 2023 by dev

How to disable functions using the PHP disable_functions directive in php ini

  • PHP disable_functions Executable Handling

The disable_function is used to stop certain dangerous PHP functions from executing.

Example of disable_function.

disable_functions = "exec, system"

Use the disable_functions directive in php.ini file to disable specific functions.
At least disable exec(), shell_exec() and system(). (If using WordPress).

disable_functions = "exec, passthru, shell_exec, system, proc_open, popen, curl_exec, curl_multi_exec, parse_ini_file, show_source"

 

Filed Under: Bluehost, CentOS Web Panel, Cloudcone, Contabo, cPanel, Debian, Digitalocean, DirectAdmin, HostGator, How to, ISPConfig, Plesk, Security, Server and Hosting, VPS Management, VPSDime, Webmin Tagged With: disable functions, disabled function, php disable functions

October 24, 2022 by dev

How to Install Zip/Unzip

How to Install Zip/Unzip in Debian/Ubuntu/Mint

apt install zip

apt install unzip

How to Install Zip/Unzip in RedHa/CentOS/Fedora

dnf install zip

dnf install unzip

How to Install Zip/Unzip in Arch/Manjaro Linux

pacman -S zip

pacman -S unzip

How to Install Zip/Unzip in OpenSUSE

zypper install zip

zypper install unzip

Filed Under: AWS, Bluehost, CentOS Web Panel, Cloudcone, Contabo, cPanel, Debian, Digitalocean, DirectAdmin, HostGator, ISPConfig, Mail Server Solusion, Plesk, Providers, Server and Hosting, VPS Management, VPSDime, Web Control Panel, Webmin, WHM Tagged With: unzip, zip

October 8, 2022 by dev

How to change Time Zone in Debian 11 / Debian 10

  • Changing Time Zone in Debian 11 / Debian 10

We can do the change timezone in two ways,

  1. Using /etc/localtime file
  2. Using timedatectl command

1. Using /etc/localtime File

Check current timezone

date

The /etc/localtime is a link to the original timezone file. Check the symbolic link using the following command.

ls -al /etc/localtime

Output

lrwxrwxrwx 1 root root 32 Oct 8 13:58 /etc/localtime -> ../usr/share/zoneinfo/Asia/Dhaka

The /usr/share/zoneinfo/ directory contains all the timezones.

You can check your zone info. For example, America, Chicago, Los_Angeles, Dhaka etc

ls /usr/share/zoneinfo/America/

Now, create a link with the desired timezone file. America/Chicago

ln -sf /usr/share/zoneinfo/America/Chicago /etc/localtime

Verify the timezone using the date command.

date

That’s All.

2. Using timedatectl command

Check current timezone

date

Use the following command to list all time zones.

timedatectl list-timezones

You can filter the output with the city nearer to you.

timedatectl list-timezones | grep -i Los_Angeles

Set the timezone using the following command.

timedatectl set-timezone America/Los_Angeles

Verify the timezone using the date command.

date

That’s All.

 

 

Filed Under: Debian, Server and Hosting Tagged With: debian, debian 10, debian 11, debian time zone, linux time zone, server time, time zone, timezone

October 5, 2022 by dev

Fail2Ban

  • How To Protect SSH with Fail2Ban on Debian 11

Check whether installed.

systemctl status fail2ban

Installed, but fail2ban not active or running

systemctl start fail2ban
systemctl enable fail2ban

To fail2ban error fix

fail2ban-client start

Installing Fail2ban, if not installed

sudo apt update
sudo apt install fail2ban

Check installation status

systemctl status fail2ban.service

Configuring Fail2ban

Configuration files of fail2ban service is in the /etc/fail2ban directory. There is a file with defaults called jail.conf. In this tutorial, you’ll create jail.local by copying jail.conf

cd /etc/fail2ban
sudo cp jail.conf jail.local

Now you can configure as per requirements

sudo vi jail.local

You can set bantime, findtime, maxretry and you can set destemail to receive email alert.

Individual Jail Settings

vi /etc/fail2ban/jail.local

By default, the SSH service is enabled and all others are disabled.

enabled = true

After configuring all restart

sudo systemctl restart fail2ban

Ignore IP

ignoreip

Filed Under: Debian, iRedMain, Mail Server Solusion

October 4, 2022 by dev

Creating new user Debian

  • Initial Server Setup with Debian 11

1. Log in as root
This example creates a new user called suname

adduser suname

This will ask for New password and other information. You can leave other information blank.

Next, we’ll set up this new user with admin privileges.

Granting Administrative Privileges with sudo

usermod -aG sudo suname

 

 

Filed Under: Debian, How to, Server and Hosting

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