Linux安装”rinetd”实现TCP/UDP端口转发

#安装依赖
#debian
apt-get install gcc g++ make automake -y

#centos
yum -y install gcc gcc-c++ make automake

#下载rinetd
wget https://ghproxy.com/github.com/samhocevar/rinetd/releases/download/v0.73/rinetd-0.73.tar.gz
#解压
tar -zxvf rinetd-0.73.tar.gz
#进入目录
cd rinetd-0.73
#编译安装
./bootstrap
./configure
make && make install

#新建rinetd配置文件
nano /usr/local/etc/rinetd.conf
#填写如下内容
#本地Ip 端口 目标ip 目标端口 
0.0.0.0 2021 1.1.1.1 80

#启动rinetd
rinetd -c /usr/local/etc/rinetd.conf

[Unit]
Description=rinetd
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/sbin/rinetd -c /usr/local/etc/rinetd.conf

[Install]
WantedBy=multi-user.target

#启动rinetd
systemctl start rinetd
#设置开机启动
systemctl enable rinetd
#停止rinetd
systemctl stop rinetd
#重启
systemctl restart rinetd