IPv6 Der Debian Router

Wir werden am Anfang 3 Dinge machen

• IPv6 und IPv4 für WAN und LAN setzen
• Default IPv6 und IPv4 Route setzen
• IPv6 Forwarding einschalten
• IPv4 Forwarding einschalten
• Routen hinter unseren Switch setzen
• Firewall anpassen

Netzwerk

• cat /etc/network/interfaces

auto ens3
iface ens3 inet static
 address 172.30.34.2/24 
 gateway 172.30.34.1

iface ens3 inet6 static
 address 2a02:24d8:71:2441::2/64
 gateway 2a02:24d8:71:2441::1


auto ens4
iface ens4 inet static
 address 192.168.44.1/24
 post-up ip -4 route add 192.168.45.0/24 via 192.168.44.2 
 post-up ip -4 route add 192.168.46.0/24 via 192.168.44.2 
 post-up ip -4 route add 192.168.47.0/24 via 192.168.44.2 


iface ens4 inet6 static
 address 2a02:24d8:71:2444::1/64
 post-up ip -6 route add 2a02:24d8:71:2445::0/64 via 2a02:24d8:71:2444::2
 post-up ip -6 route add 2a02:24d8:71:2446::0/64 via 2a02:24d8:71:2444::2
 post-up ip -6 route add 2a02:24d8:71:2447::0/64 via 2a02:24d8:71:2444::2

Hochfahren

• ifup -va

Namerver

• cat /etc/resolv.conf

nameserver  2001:4860:4860::8888
nameserver  8.8.8.8
search linuggs.de

Forwarding

• cat /etc/sysctl.conf

net.ipv6.conf.all.forwarding = 1
net.ipv4.ip_forward=1

Aktivkieren

• sysctl -p

Firewall

• cat /etc/nftables.conf

#!/usr/sbin/nft -f

flush ruleset

table inet filter {
	chain input {
		type filter hook input priority filter;
	}
	chain forward {
		type filter hook forward priority filter;
	}
	chain output {
		type filter hook output priority filter;
	}
}

table ip nat {
	chain postrouting {
		type nat hook postrouting priority 100;
		oif ens3 masquerade
	 }
}

aktivieren

• nft -f /etc/nftables.conf