Difference between revisions of "2011-39-Migrering af Linux"

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#ip tables
 
#ip tables
  
= Config =
+
= Config =
  
== DHCP ==
+
== DHCP<br> ==
  
 
====== On FW ======
 
====== On FW ======
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#
 
#
 
#subnet 192.168.2.0 netmask 255.255.255.0 {
 
#subnet 192.168.2.0 netmask 255.255.255.0 {
#}</source><br>
+
#}</source><br>  
  
== IPTABLES ==
+
Exec. Restart dhcpd service
  
=== NAT ===
+
<source lang="bash">service dhcpd restart</source>
  
Execute:
+
====== On Webserver &amp; Client ======
 +
 
 +
Exec. Renew IP
 +
 
 +
<source lang="bash">dhclient -r
 +
dhclient</source><br>
 +
 
 +
== IPTABLES  ==
 +
 
 +
=== NAT  ===
 +
 
 +
====== On FW ======
 +
 
 +
Execute:  
  
 
<source lang="bash">echo 1 > /proc/sys/net/ipv4/ip_forward
 
<source lang="bash">echo 1 > /proc/sys/net/ipv4/ip_forward

Revision as of 14:07, 26 September 2011

Opgaver

Mandag 26-9-2011

Formiddag

  1. Opdater serverene
  2. Tilføj extra netkort
  3. statisk dhcp
  4. sæt dhcp server op
  5. ip tables

Config

DHCP

On FW

in /etc/dhcp/dhcpd.conf

#
# DHCP Server Configuration file.
#   see /usr/share/doc/dhcp*/dhcpd.conf.sample
#   see dhcpd.conf(5) man page
#
ddns-update-style interim;
ignore client-updates;

subnet 192.168.1.0 netmask 255.255.255.0 {

   # The range of IP addresses the server
   # will issue to DHCP enabled PC clients
   # booting up on the network

   range 192.168.1.100 192.168.1.199;

   # Set the amount of time in seconds that
   # a client may keep the IP address

  default-lease-time 86400;
  max-lease-time 86400;

   # Set the default gateway to be used by
   # the PC clients

   option routers 192.168.1.1;
   # Don't forward DHCP requests from this
   # NIC interface to any other NIC
   # interfaces

   option ip-forwarding off;

   # Set the broadcast address and subnet mask
   # to be used by the DHCP clients

  option broadcast-address 192.168.1.255;
  option subnet-mask 255.255.255.0;

   # Set the NTP server to be used by the
   # DHCP clients

  option ntp-servers 192.168.1.1;

   # Set the DNS server to be used by the
   # DHCP clients

  option domain-name-servers 192.168.1.1;

   # If you specify a WINS server for your Windows clients,
   # you need to include the following option in the dhcpd.conf file:

  option netbios-name-servers 192.168.1.1;

   # You can also assign specific IP addresses based on the clients'
   # ethernet MAC address as follows (Host's name is "laser-printer":

  #host laser-printer {
   #   hardware ethernet 08:00:2b:4c:59:23;
   #  fixed-address 192.168.1.222;
   #}
}
#
# List an unused interface here
#
#subnet 192.168.2.0 netmask 255.255.255.0 {
#}

Exec. Restart dhcpd service

service dhcpd restart
On Webserver & Client

Exec. Renew IP

dhclient -r
dhclient

IPTABLES

NAT

On FW

Execute:

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

/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/sbin/iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT
/sbin/iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT