IPv6 Firewall Script is a firewall that relies on ip6tables to protect networks from unauthorized access. It is designed specifically for use with IPv6 addresses and protocols.
The IPv6 Firewall script is a firewall software that runs based on ip6tables. Written by Dennis Kruyt in 2003, the script consists of 122 lines of code and uses a basic shell script structure that calls other scripts for configuration and kernel options.
The software follows a systematic and organized approach to firewall implementation. The configuration file, config6, is just 12 lines long and includes important variables such as the path to the scripts directory, device, trusted IPs, blacklist IPs, and network mask values. The kernel options6.sh file is even shorter with just 7 lines of code, setting simple forwarding-on and proc settings.
The main script, firewall6.sh, has four parameters: flush, start/reload, show, and a catch-all for invalid inputs. The flush option clears all iptables chains and sets default policies to ACCEPT, effectively disabling the firewall. Start/reload option restarts the firewall after creating a backup and sending an email notification. This option sets default policies to DROP, creates network chains for inbound and outbound traffic, blacklists attacker IPs, and finally jumps to all the chains.
The show option lists all the current iptables rules. Overall, the software provides basic protection against IPv6 attacks and can be easily configured and customized to suit individual requirements.
The software follows a systematic and organized approach to firewall implementation. The configuration file, config6, is just 12 lines long and includes important variables such as the path to the scripts directory, device, trusted IPs, blacklist IPs, and network mask values. The kernel options6.sh file is even shorter with just 7 lines of code, setting simple forwarding-on and proc settings.
The main script, firewall6.sh, has four parameters: flush, start/reload, show, and a catch-all for invalid inputs. The flush option clears all iptables chains and sets default policies to ACCEPT, effectively disabling the firewall. Start/reload option restarts the firewall after creating a backup and sending an email notification. This option sets default policies to DROP, creates network chains for inbound and outbound traffic, blacklists attacker IPs, and finally jumps to all the chains.
The show option lists all the current iptables rules. Overall, the software provides basic protection against IPv6 attacks and can be easily configured and customized to suit individual requirements.
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