Revision as of 17:10, 24 January 2012

<accesscontrol>teacher</accesscontrol>

This article is under development....

Ide

Ideen med denne server er at lave et Juniper Lab, med en logon server der giver kursisten adgang til et virtuelt netværk hvor der kan opsættes udstyr og prøves ting af i et test senarie.

Installation

Default programs

sudo aptitude install nmap bmon nmon htop mono-runtime mono-2.0-gac

EtherChanel

Nic Bonding på Ubuntu er beskrevet her: https://help.ubuntu.com/community/LinkAggregation

sudo aptitude install ifenslave

sudo nano /etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp
# This is an autoconfigured IPv6 interface
iface eth0 inet6 auto

#Create the interface
auto bond0
iface bond0 inet manual
#Add physical network adapters
bond-slaves eth1 eth2
#Configure load balancing mode
#mode=0 (balance-rr)
#mode=1 (active-backup)
#mode=2 (balance-xor)
#mode=3 (broadcast)
#mode=4 (802.3ad)
#mode=5 (balance-tlb)
#mode=6 (balance-alb)

bond_mode 2

Genstart networking

sudo /etc/init.d/networking restart

For at teste at det virker, har jeg lavet et program der sender UDP trafik til den bestemt IP og port, så hurtigt som maskinen kan.

Opret 2 statiske ARP's for maskinen har noget L2 at sende til:

sudo arp -s 10.0.0.3 00:00:00:00:00:01
sudo arp -s 10.0.0.4 00:00:00:00:00:02

Jeg har brugt bmon til at se om den sender noget trafik, og på hvilke kanaler.

rael@JLab:~$ ./LinuxUdpBomber.exe 10.0.0.3 5000

#Bmon snippet
JLab (source: local)
  0   lo                         0.00B            0       0.00B            0
  1   eth2                     163.00B            1       0.00B            0
  2   eth1                     395.00B            3      11.08MiB      36076
  3   eth0                     566.00B            5     100.00B            0
  4   bond0                    558.00B            5      11.08MiB      36076


rael@JLab:~$ ./LinuxUdpBomber.exe 10.0.0.4 5000

#Bmon snippet
JLab (source: local)
  0   lo                         0.00B            0       0.00B            0
  1   eth2                       0.00B            0      11.08MiB      36076
  2   eth1                     384.00B            5       0.00B            0
  3   eth0                     424.00B            6     186.00B            1
  4   bond0                    384.00B            5      11.08MiB      36076

VLans

Vlan konfiguration står beskrevet her: https://wiki.ubuntu.com/vlan

Installer vlan mgmt og load moduler

aptitude install vlan
modprobe 8021q
sudo su -c 'echo "8021q" >> /etc/modules'

Ændre i /etc/network/interfaces

auto bond0
iface bond0 inet static
 address 10.0.0.1
 netmask 255.255.255.0
 bond-slaves eth1 eth2
 bond_mode 2

auto bond0.100
iface bond0.100 inet static
 address 10.100.0.1
 netmask 255.255.255.0
 vlan-raw-device bond0

LinuX Containers

Install LXC and random other stuf:

aptitude install lxc htop bridge-utils landscape-common bmon nmap iperf nmon -y

Enable IPv4 Forwarding:

echo "1" > /proc/sys/net/ipv4/ip_forward

Create Bridge interface per vlan

#Create the Bridges
brctl addbr br200
brctl addbr br201
brctl addbr br202
brctl addbr br203
brctl addbr br204
brctl addbr br205
brctl addbr br206
brctl addbr br207

#Bond Bridges and interfaces
brctl addif br200 bond0.200
brctl addif br201 bond0.201
brctl addif br202 bond0.202
brctl addif br203 bond0.203
brctl addif br204 bond0.204
brctl addif br205 bond0.205
brctl addif br206 bond0.206
brctl addif br207 bond0.207

#Enable the Bridges
ip link set dev br200 up
ip link set dev br201 up
ip link set dev br202 up
ip link set dev br203 up
ip link set dev br204 up
ip link set dev br205 up
ip link set dev br206 up
ip link set dev br207 up

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