# chisel > Chisel is a tool creating a TCP tunnel. Including both client and server. > More information: . - Run a chisel server: `chisel server` - Run a chisel server listening to a specific port: `chisel server -p {{server_port}}` - Run a chisel server securing the connection using a username and password authentication: `chisel server --auth {{username}}:{{password}}` - Connect to a chisel server and tunnel a specific port to a remote server and port: `chisel client {{server_ip}}:{{server_port}} {{local_port}}:{{remote_server}}:{{remote_port}}` - Connect to a chisel server and tunnel a specific host and port to a remote server and port: `chisel client {{server_ip}}:{{server_port}} {{local_host}}:{{local_port}}:{{remote_server}}:{{remote_port}}` - Connect to a chisel server using username and password authentication: `chisel client --auth {{username}}:{{password}} {{server_ip}}:{{server_port}} {{local_port}}:{{remote_server}}:{{remote_port}}`