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Ssh Server Setup for Local Wifi Access

#llm.claude-sonnet-4

Here's how to set up an SSH server on Linux to allow connections from your local WiFi network:

Install SSH Server

Ubuntu/Debian:

sudo apt update
sudo apt install openssh-server

CentOS/RHEL/Fedora:

sudo yum install openssh-server  # CentOS/RHEL
sudo dnf install openssh-server  # Fedora

Start and Enable SSH Service

sudo systemctl start ssh      # Ubuntu/Debian
sudo systemctl start sshd     # CentOS/RHEL/Fedora

sudo systemctl enable ssh     # Ubuntu/Debian  
sudo systemctl enable sshd    # CentOS/RHEL/Fedora

Edit the SSH configuration file:

sudo nano /etc/ssh/sshd_config

Key settings to consider:

  • Port 22 (default, or change for security)
  • PasswordAuthentication yes (allow password login)
  • PubkeyAuthentication yes (allow key-based login)
  • PermitRootLogin no (disable root login for security)

After making changes, restart SSH:

sudo systemctl restart ssh   # Ubuntu/Debian
sudo systemctl restart sshd  # CentOS/RHEL/Fedora

Configure Firewall

Ubuntu (UFW):

sudo ufw allow ssh
sudo ufw enable

CentOS/RHEL/Fedora (firewalld):

sudo firewall-cmd --permanent --add-service=ssh
sudo firewall-cmd --reload

Find Your Server's IP Address

ip addr show
# or
hostname -I

Connect from Another Device

From any device on the same WiFi network:

ssh username@server-ip-address

For example:

ssh john@192.168.1.100

Test the Connection

Check if SSH is listening:

sudo netstat -tlnp | grep :22

The SSH server should now be accessible from any device connected to your local WiFi network using the server's local IP address.