Vernetzung mittels TCP/IP Linux Beispiel: Unterschied zwischen den Versionen
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*'''iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE''' | *'''iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE''' | ||
==r2== | ==r2== | ||
| − | *'''ip addr add | + | *'''ip addr add 172.18.43.2/24 dev eth0''' |
| − | *'''ip addr add | + | *'''ip addr add 192.168.77.1/24 dev eth1''' |
| − | *'''ip route add default | + | *'''ip route add default via 172.18.43.1''' |
| − | |||
| − | |||
*'''sysctl -w net.ipv4.ip_forward=1''' | *'''sysctl -w net.ipv4.ip_forward=1''' | ||
*'''echo "nameserver 172.19.44.41/27" > /etc/resolv.conf''' | *'''echo "nameserver 172.19.44.41/27" > /etc/resolv.conf''' | ||
*'''echo "search kit.lab" >> /etc/resolv.conf''' | *'''echo "search kit.lab" >> /etc/resolv.conf''' | ||
*'''iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE''' | *'''iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE''' | ||
| + | |||
==r3== | ==r3== | ||
*'''ip addr add 212.88.34.67/24 dev eth0''' | *'''ip addr add 212.88.34.67/24 dev eth0''' | ||
Version vom 14. Februar 2023, 14:20 Uhr
Beispiel Netz
- Jeder Rechner soll jeden erreichen.
- Der Router r1 soll maskieren.
- Der server s1 soll als Nameserver fungieren.
![Bearbeiten](javascript:editDrawio("1492369446", "Vernetzung mittels TCP-IP Linux Beispiel 1.drawio.png", "png", false, false, false, true, "https://embed.diagrams.net")){kind=link}
Manuelle Konfiguration
r1
- ip addr add 212.88.34.67/24 dev eth0
- ip addr add 172.18.43.1/24 dev eth1
- ip route add default via 212.88.34.1
- ip route add 192.168.77.0/24 via 172.18.43.2
- ip route add 172.19.44.32/27 via 172.18.43.3
- sysctl -w net.ipv4.ip_forward=1
- echo "nameserver 172.19.44.41/27" > /etc/resolv.conf
- echo "search kit.lab" >> /etc/resolv.conf
- iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
r2
- ip addr add 172.18.43.2/24 dev eth0
- ip addr add 192.168.77.1/24 dev eth1
- ip route add default via 172.18.43.1
- sysctl -w net.ipv4.ip_forward=1
- echo "nameserver 172.19.44.41/27" > /etc/resolv.conf
- echo "search kit.lab" >> /etc/resolv.conf
- iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
r3
- ip addr add 212.88.34.67/24 dev eth0
- ip addr add 172.18.43.1/24 dev eth1
- ip route add default via 212.88.34.1
- ip route add 192.168.77.0/24 via 172.18.43.2
- ip route add 172.19.44.32/27 via 172.18.43.3
- sysctl -w net.ipv4.ip_forward=1
- echo "nameserver 172.19.44.41/27" > /etc/resolv.conf
- echo "search kit.lab" >> /etc/resolv.conf
- iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
r4
- ip addr add 212.88.34.67/24 dev eth0
- ip addr add 172.18.43.1/24 dev eth1
- ip route add default via 212.88.34.1
- ip route add 192.168.77.0/24 via 172.18.43.2
- ip route add 172.19.44.32/27 via 172.18.43.3
- sysctl -w net.ipv4.ip_forward=1
- echo "nameserver 172.19.44.41/27" > /etc/resolv.conf
- echo "search kit.lab" >> /etc/resolv.conf
- iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE