How to Speed up your connection internet on Linux Terminal

[buterinmakeyouwet]

You can perform some network optimizations using the terminal on Linux to potentially improve your internet connection speed. Here are some commands and steps you can try:

1. Flush DNS Cache:
   bash
   sudo systemd-resolve --flush-caches
2. Change DNS Server (example: Google DNS):
   bash
   sudo nano /etc/resolv.conf
   Edit the file to include the following lines:
   nameserver 8.8.8.8
   nameserver 8.8.4.4
   Save and exit the file. Restart the network service:
   bash
   sudo systemctl restart NetworkManager
3. TCP Window Scaling: Edit the sysctl.conf file:
   bash
   sudo nano /etc/sysctl.conf
   Add the following lines:
   net.ipv4.tcp_window_scaling = 1
   net.ipv4.tcp_timestamps = 1
   Save and apply the changes:
   bash
   sudo sysctl -p
4. TCP Congestion Control (example: BBR):
   bash
   sudo nano /etc/sysctl.conf
   Add the following line:
   net.core.default_qdisc=fq
   net.ipv4.tcp_congestion_control=bbr
   Save and apply the changes:
   bash
   sudo sysctl -p
5. Limit Resolving IPv6 Addresses: Edit the sysctl.conf file:
   bash
   sudo nano /etc/sysctl.conf
   Add the following line:
   arduino
   net.ipv6.conf.all.disable_ipv6 = 1
   net.ipv6.conf.default.disable_ipv6 = 1
   net.ipv6.conf.lo.disable_ipv6 = 1
   Save and apply the changes:
   bash
   sudo sysctl -p
6. Use iperf to Test Network Speed: Install iperf if not already installed:
   bash
   sudo apt-get install iperf
   Run iperf as a server on one machine:
   bash
   iperf -s
   Test the network speed from another machine:
   bash
   iperf -c <server_ip>

Please note that these commands and changes might have varying effects depending on your network setup and conditions. It's recommended to apply them one at a time, monitor your network performance, and revert any changes if they do not yield the desired results or cause issues.

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