How to recycle network resources in the Debian system

This article introduces how to efficiently recycle network resources in the Debian system, covering service management, interface control, IP address release, cache cleaning, resource monitoring and network configuration optimization.

1. Disable unnecessary network services: Use the systemctl command to manage system services. For example, disable SSH service:

    sudo systemctl stop ssh
   sudo systemctl disable ssh

   Similar methods can be used for other services (such as FTP, Telnet).

2. Turn off an idle network interface: If a network interface (such as eth0 ) is no longer in use, turn it off:

    sudo ip link set eth0 down

   Re-enable the interface:

    sudo ip link set eth0 up

3. Release IP address: For dynamic IP (DHCP), restart the network service to release and re-acquire the IP:

    sudo systemctl restart networking

   Static IP needs to modify the network configuration file and restart the network service.

4. Clear network cache: The Debian system will cache network data and use the following command to clean the cache (use the net.ipv4.tcp_tw_recycle option with caution, especially in NAT environment):

    sudo sysctl -w net.ipv4.tcp_fin_timeout=30
   sudo sysctl -w net.ipv4.tcp_tw_reuse=1
   sudo sysctl -w net.ipv4.tcp_tw_recycle=1

5. Real-time monitoring of network resources: Use nmon , iftop , nload and other tools to monitor the use of network resources, and promptly discover and solve resource waste problems.

6. Optimize network parameters: Adjust network configuration according to actual needs, such as adjusting the TCP window size, enabling QoS, etc., to improve network performance and resource utilization.

Follow the above steps to effectively recycle and manage network resources of the Debian system.

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