Here is a sample configuration file for the SSH client (ssh_config):

# SSH client configuration file

# Global settings
Host *
    # Set default options for all hosts
    ForwardAgent yes
    ForwardX11 yes
    PasswordAuthentication yes
    PubkeyAuthentication yes
    ServerAliveInterval 60

# Host-specific settings
Host example.com
    # Set options for a specific host
    User myusername
    Port 22
    IdentityFile ~/.ssh/id_rsa

Host anotherhost.com
    # Set options for another host
    User anotheruser
    Port 2222
    IdentityFile ~/.ssh/another_key

Host anotherhost
    # Set options for another host
    HostName dev.example.com
    User anotheruser
    Port 2222
    IdentityFile ~/.ssh/another_key

# Add more host configurations as needed

You can save this configuration file as ~/.ssh/config on your Linux/Debian system. Make sure to replace example.com and anotherhost.com with the actual hostnames or IP addresses of the SSH servers you want to connect to. Also, update the User, Port, and IdentityFile options according to your specific setup.

Let me know if you need any further assistance!