TCPTP-booster
This is a simple program to make your Linux server act as TCP Transparent Proxy.
Usage:
./tcptp-booster -l 12345
to make it listening on port 12345.
If there is no arguments the default listening port will be 12345.
Application:
Accelerate udp based VPN by TCP BBR.
If your server using advanced tcp congestion control algorithm such as TCP BBR.
And you have already setup an udp based VPN on your server such as WireGuard, OpenVPN, IPSec.
In this case, when vpn client connect to a remote server using legency tcp congestion control such as cubic, and the route between local and vpn server has high packet loss rate, the network speed will drop.
This program will help you accelerate TCP speed by advanced tcp congestion control.
Howto:
1. Build this program and install
git clone https://github.com/cyyself/TCPTP-booster.git
cd TCPTP-booster
make
sudo cp bin/tcptp-booster /usr/local/bin/
2. make it running on the backgroud
You can make it running on the backgroud by systemd
Adding this to /etc/systemd/system/tcptp-booster.service
[Unit]
Description=A simple program to make your Linux server act as TCP Transparent Proxy.
[Service]
User=root
ExecStart=/usr/local/bin/tcptp-booster
Restart=always
[Install]
WantedBy=multi-user.target
Then execute these commands:
systemctl daemon-reload
systemctl start tcptp-booster
systemctl status tcptp-booster
systemctl enable tcptp-booster
3. Add rules to iptables
iptables -t nat -A PREROUTING -p tcp -m tcp -s 192.168.233.0/24 -j REDIRECT --to-ports 12345
Please replace 192.168.233.0/24 to your VPN client subnet
4. Enjoy it.
Test
Explain my environment:
My local PC connect to 192.168.233.1 via wireguard.
192.168.233.1 is a remote vpn server using tcp bbr.
And the 34.80.91.11 is a remote server using cubic.
The first time I didn't apply iptables rule so the speed is too low because of high packet loss.
The second time I apply the iptabels rule so the tcp traffic through VPN Server will redirect to my program and using TCP BBR to acclerate the speed.
