Linux LAN-related commands and SSH connection to the remote host

• Ifconfig command
  • View and configure network status commands
• Turn off and start the NIC
  • Ifdown NIC Device Name
    • Disable the NIC device
  • Ifup NIC Device Name
    • Enable the NIC device
• Querying network status
  • Netstat options
    • -t lists TCP protocol ports
    • -U lists UDP protocol ports
    • -l list only in the Listening State Network Service
    • -A Lists all network connections
• SSH command
  • SSH User name @ip
    • Remote administration of specified Linux servers
  • SCP [-r] User name @ip: File path Local Path
    • Download file
  • SCP [-r] Local file user name @ip: Upload path
    • Uploading files

• Symmetric encryption algorithm
  • The same key can be used as both the encryption and decryption of information, which is called symmetric encryption, also known as single-key encryption
• Asymmetric encryption algorithm
  • Also known as Public key encryption algorithm, requires public key and private key

• You can use the Xshell Telnet tool and the WinSCP file Transfer tool

Linux LAN-related commands and SSH connection to the remote host