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 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'''
 
==r3==
 
==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==
 
==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'''
 
==s1==
 
==s1==
 
==s2==
 
==s2==
 
==w1==
 
==w1==
 
==w2==
 
==w2==

Version vom 14. Februar 2023, 14:16 Uhr

Beispiel Netz

  • Jeder Rechner soll jeden erreichen.
  • Der Router r1 soll maskieren.
  • Der server s1 soll als Nameserver fungieren.

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 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

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

s1

s2

w1

w2

Abgerufen von „http://wiki.ixheim.de/index.php?title=Vernetzung_mittels_TCP/IP_Linux_Beispiel&oldid=41370“