Vernetzung mittels TCP/IP Linux statisch: Unterschied zwischen den Versionen
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| Zeile 26: | Zeile 26: | ||
*'''echo "nameserver 8.8.8.8" > /etc/resolv.conf''' | *'''echo "nameserver 8.8.8.8" > /etc/resolv.conf''' | ||
Search Domain | Search Domain | ||
| − | *'''echo "search | + | *'''echo "search hack.lab" >> /etc/resolv.conf''' |
=Forwarding einschalten= | =Forwarding einschalten= | ||
Version vom 15. Februar 2023, 12:32 Uhr
Ip Adresse an Interface binden
- Bearbeiten der Interfaces in /etc/network/interfaces
- vim /etc/network/interfaces
# The primary network interface
auto enp0s3
iface enp0s3 inet static
address 10.31.4.19/24
gateway 10.31.4.1
auto enp0s8
iface enp0s8 inet static
address 10.88.19.1/24
auto enp0s9
iface enp0s9 inet static
address 192.168.19.0/24
auto enp0s10
iface enp0s10 inet static
address 192.168.17.0/24
Nameserver
Nameserver eintragen
- echo "nameserver 8.8.8.8" > /etc/resolv.conf
Search Domain
- echo "search hack.lab" >> /etc/resolv.conf
Forwarding einschalten
In der Datei /etc/sysctl.conf entfernen wir das Raute "#" Zeichen, um die Option "net.ipv4.ip_forward=1" zu aktivieren
- vim /etc/sysctl.conf
# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1
Hostname setzen
- Den Hostname setzen wir mit folgendem Befehl
- hostnamectl set-hostname firewall.kit.lab
- Wir ändern den Host in /etc/hosts
- vim /etc/hosts
127.0.1.1 hack.lab firewall
Masquerade
- Bearbeiten der Interfaces Optionen des Interfaces "enp0s3" in der Datei "/etc/network/interfaces"
- vim /etc/network/interfaces
# The primary network interface
auto enp0s3
iface enp0s3 inet static
address 10.31.4.19/24
gateway 10.31.4.1
post-up iptables -t nat -A POSTROUTING -j MASQUERADE -o enp0s3 -s 192.168.19.0/24
post-up iptables -t nat -A POSTROUTING -j MASQUERADE -o enp0s3 -s 192.168.17.0/24