How to Install LiteSpeed Web Server on AlmaLinux with CSF Firewall

Step 1: Login to Server

- SSH into your server as root.

Step 2: Install Required Packages

- Update system:

  yum update -y

- Install wget and Perl if missing:

  yum install wget perl -y

Step 3: Install LiteSpeed Web Server

- Download the LiteSpeed installer:

  wget --no-check-certificate https://www.litespeedtech.com/packages/cpanel/lsws_whm_plugin_install.sh

- Make it executable:

  chmod +x lsws_whm_plugin_install.sh

- Run the installation script:

  ./lsws_whm_plugin_install.sh

Step 4: Install LiteSpeed Plugin for cPanel

- After installation completes, login to WHM:

  https://your-server-ip:2087

- Go to:

  Home » Plugins » LiteSpeed Web Server Plugin

- Click "Install LiteSpeed Web Server"

- Enter your LiteSpeed license key or get a free trial license.

Step 5: Switch from Apache to LiteSpeed

- In WHM, go to:

  LiteSpeed Web Server Plugin -> Switch to LiteSpeed

- Click "Switch to LiteSpeed" button to replace Apache with LiteSpeed.

Step 6: Configure CSF Firewall for LiteSpeed

- Open port 7080 (LiteSpeed Admin Panel) and 443 (SSL):

  - Go to WHM -> ConfigServer Security & Firewall (CSF)

  - Edit **Firewall Configuration**.

  - Add **7080** to **TCP_IN** and **TCP_OUT** (for LiteSpeed Admin Console access).

  - Add **443** to **TCP_IN** and **TCP_OUT** (for SSL connections).

- Restart CSF firewall:

  - In WHM, go to **Firewall Configuration** -> **Restart CSF+LFD**.

Step 7: Verify LiteSpeed Installation

- In WHM, go to LiteSpeed Web Server Plugin and check that LiteSpeed is running.

- Or, SSH into the server and run:

  ps aux | grep litespeed

  - You should see processes related to LiteSpeed.

Step 8: Access LiteSpeed Admin Console

- Go to:

  https://your-server-ip:7080

- Default login credentials:

  - Username: admin

  - Password is set during the installation.

Step 9: Restart LiteSpeed if Needed

- From WHM LiteSpeed Plugin, you can restart LiteSpeed.

- Or via SSH, use:

  service lsws restart

Step 10: Enjoy LiteSpeed Performance!

- Use LiteSpeed Cache (LSCache) for supported applications like WordPress, Magento, etc.

- Fine-tune LiteSpeed settings from the Admin Panel.

Important Notes:

- Ensure that CSF is properly configured before switching to LiteSpeed.

- If CSF blocks port 7080, you won’t be able to access the LiteSpeed admin panel.

- LiteSpeed Enterprise requires a paid license, but a 15-day free trial is available.

- OpenLiteSpeed (free version) does not have full cPanel support but can be used for basic setups.