Brook/iptables port forwarding one-click management script, support DDNS

1. Brook Script Version

A modified version of the original Brook port forwarding one-key management script, which adds support for dynamic domain names and automatically updates the domain name IP after enabling monitoring.

Based on iptables firewall, remember to install iptables.

Install Brook, then configure port forwarding, and finally start Brook.

 wget -N --no-check-certificate https://zhujiwiki.com/wp-content/uploads/2020/01//brook-pf-mod.sh && chmod +x brook-pf-mod.sh
./brook-pf-mod.sh

Reprinted from: https://github.com/yulewang/brook/

2. iptables script version

 wget -N --no-check-certificate https://zhujiwiki.com/wp-content/uploads/2020/01/iptables-pf.sh && chmod +x iptables-pf.sh
bash iptables-pf.sh

3. Related issues

1. Uninstall firewalld and ufw

 apt remove firewalld ufw

or

 yum remove firewalld ufw

Then reboot.

2. Install iptables

 yum install -y iptables
yum update iptables 
yum install iptables-services

iptables configuration file: /etc/sysconfig/iptables

3. Enable the forwarding function

 echo -e "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
sysctl -p

4. Set up the iptable automatic loading rules function at startup

CentOS systems:

 service iptables save
systemctl enable iptables.service

Debian/Ubuntu systems:

 iptables-save > /etc/iptables.up.rules
echo -e '#!/bin/bash\n/sbin/iptables-restore < /etc/iptables.up.rules' > /etc/network/if-pre-up.d/iptables
chmod +x /etc/network/if-pre-up.d/iptables