Sharing "things" between Ubuntu Studio 11.10 and...

Ralf Mardorf ralf.mardorf at alice-dsl.net
Sat Feb 18 17:59:20 UTC 2012


On Wed, 2012-02-15 at 12:13 -0700, Gustin Johnson wrote:
> You need to set up your Ubuntu box as a router, do a google search for
> linux masquerade router

Should I add some IP thingy to ...

# cat /home/spinymouse/adhoc
#! /bin/sh
# sh ./adhoc
# https://help.ubuntu.com/community/WifiDocs/Adhoc

device=wlan0
sudo service network-manager stop
sudo ip link set $device down
sudo iwconfig $device mode ad-hoc
sudo iwconfig $device channel 4
sudo iwconfig $device essid 'oz'
sudo iwconfig $device key 1324354657
# sudo dhclient $device
sudo ip addr add 169.254.34.2/16 dev $device
exit 0

... ?

I already tried 2 howtos, but they soon stopped when I should run
something in /etc/init.d that doesn't exist [1]

Regards,
Ralf

### FIRST TRIAL ########################################################

http://ubuntuforums.org/showthread.php?t=111972

# synaptic
Install: dhcp3-server
        
# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1e:8c:80:2a:eb  
          inet6 addr: fe80::21e:8cff:fe80:2aeb/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:47187 errors:0 dropped:0 overruns:0 frame:0
          TX packets:38532 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:46745545 (46.7 MB)  TX bytes:5440817 (5.4 MB)
          Interrupt:43 Base address:0x8000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1296 (1.2 KB)  TX bytes:1296 (1.2 KB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:85.182.19.232  P-t-P:213.191.89.25
          Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:46205 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37514 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:45670049 (45.6 MB)  TX bytes:4579201 (4.5 MB)

wlan0     Link encap:Ethernet  HWaddr 00:0a:eb:22:ef:b3  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

# gedit /etc/dhcp/dhcpd.conf
# cat /etc/dhcp/dhcpd.conf
#
# Sample configuration file for ISC dhcpd for Debian
#
# Attention: If /etc/ltsp/dhcpd.conf exists, that will be used as
# configuration file instead of this file.
#
#

# The ddns-updates-style parameter controls whether or not the server
will
# attempt to do a DNS update when a lease is confirmed. We default to
the
# behavior of the version 2 packages ('none', since DHCP v2 didn't
# have support for DDNS.)
ddns-update-style ad-hoc;

# option definitions common to all supported networks...
option domain-name "oz.com";
option domain-name-servers 192.168.1.1, 192.168.2.1;

default-lease-time 600;
max-lease-time 7200;

# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
#authoritative;

# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
log-facility local7;

# No service will be given on this subnet, but declaring it helps the 
# DHCP server to understand the network topology.

#subnet 10.152.187.0 netmask 255.255.255.0 {
#}

# This is a very basic subnet declaration.

#subnet 10.254.239.0 netmask 255.255.255.224 {
#  range 10.254.239.10 10.254.239.20;
#  option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
#}

# This declaration allows BOOTP clients to get dynamic addresses,
# which we don't really recommend.

#subnet 10.254.239.32 netmask 255.255.255.224 {
#  range dynamic-bootp 10.254.239.40 10.254.239.60;
#  option broadcast-address 10.254.239.31;
#  option routers rtr-239-32-1.example.org;
#}

# A slightly different configuration for an internal subnet.
#subnet 10.5.5.0 netmask 255.255.255.224 {
#  range 10.5.5.26 10.5.5.30;
#  option domain-name-servers ns1.internal.example.org;
#  option domain-name "internal.example.org";
#  option routers 10.5.5.1;
#  option broadcast-address 10.5.5.31;
#  default-lease-time 600;
#  max-lease-time 7200;
#}

# Hosts which require special configuration options can be listed in
# host statements.   If no address is specified, the address will be
# allocated dynamically (if possible), but the host-specific information
# will still come from the host declaration.

#host passacaglia {
#  hardware ethernet 0:0:c0:5d:bd:95;
#  filename "vmunix.passacaglia";
#  server-name "toccata.fugue.com";
#}

# Fixed IP addresses can also be specified for hosts.   These addresses
# should not also be listed as being available for dynamic assignment.
# Hosts for which fixed IP addresses have been specified can boot using
# BOOTP or DHCP.   Hosts for which no fixed address is specified can
only
# be booted with DHCP, unless there is an address range on the subnet
# to which a BOOTP client is connected which has the dynamic-bootp flag
# set.
#host fantasia {
#  hardware ethernet 08:00:07:26:c0:a5;
#  fixed-address fantasia.fugue.com;
#}

# You can declare a class of clients and then do address allocation
# based on that.   The example below shows a case where all clients
# in a certain class get addresses on the 10.17.224/24 subnet, and all
# other clients get addresses on the 10.0.29/24 subnet.

#class "foo" {
#  match if substring (option vendor-class-identifier, 0, 4) = "SUNW";
#}

#shared-network 224-29 {
#  subnet 10.17.224.0 netmask 255.255.255.0 {
#    option routers rtr-224.example.org;
#  }
#  subnet 10.0.29.0 netmask 255.255.255.0 {
#    option routers rtr-29.example.org;
#  }
#  pool {
#    allow members of "foo";
#    range 10.17.224.10 10.17.224.250;
#  }
#  pool {
#    deny members of "foo";
#    range 10.0.29.10 10.0.29.230;
#  }
#}

# eth0 subnet configuration
subnet 192.168.1.0 netmask 255.255.255.0 {
  range 192.168.1.2 192.168.1.99;
  option routers 192.168.1.1;
  option broadcast-address 192.168.1.255;
}

# eth1 subnet configuration
subnet 192.168.2.0 netmask 255.255.255.0 {
  range 192.168.2.2 192.168.2.99;
  option routers 192.168.2.1;
  option broadcast-address 192.168.2.255;
}

# gedit /etc/default/isc-dhcp-server
# cat /etc/default/isc-dhcp-server
# Defaults for dhcp initscript
# sourced by /etc/init.d/dhcp
# installed at /etc/default/isc-dhcp-server by the maintainer scripts

#
# This is a POSIX shell fragment
#

# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
#	Separate multiple interfaces with spaces, e.g. "eth0 eth1".
#INTERFACES="wlan0"
#or
INTERFACES="eth0 wlan0"

### Screwed up
What should I restart in /etc/init.d?
########################################################################
### SECOND TRIAL #######################################################

http://www.cyberciti.biz/tips/linux-as-router-for-dsl-t1-line-etc.html

# gedit /etc/sysctl.conf
# cat /etc/sysctl.conf
#
# /etc/sysctl.conf - Configuration file for setting system variables
# See /etc/sysctl.d/ for additional system variables
# See sysctl.conf (5) for information.
#

#kernel.domainname = example.com

# Uncomment the following to stop low-level messages on console
#kernel.printk = 3 4 1 3

##############################################################3
# Functions previously found in netbase
#

# Uncomment the next two lines to enable Spoof protection (reverse-path
filter)
# Turn on Source Address Verification in all interfaces to
# prevent some spoofing attacks
#net.ipv4.conf.default.rp_filter=1
#net.ipv4.conf.all.rp_filter=1

# Uncomment the next line to enable TCP/IP SYN cookies
# See http://lwn.net/Articles/277146/
# Note: This may impact IPv6 TCP sessions too
#net.ipv4.tcp_syncookies=1

# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1

# Uncomment the next line to enable packet forwarding for IPv6
#  Enabling this option disables Stateless Address Autoconfiguration
#  based on Router Advertisements for this host
#net.ipv6.conf.all.forwarding=1


###################################################################
# Additional settings - these settings can improve the network
# security of the host and prevent against some network attacks
# including spoofing attacks and man in the middle attacks through
# redirection. Some network environments, however, require that these
# settings are disabled so review and enable them as needed.
#
# Do not accept ICMP redirects (prevent MITM attacks)
#net.ipv4.conf.all.accept_redirects = 0
#net.ipv6.conf.all.accept_redirects = 0
# _or_
# Accept ICMP redirects only for gateways listed in our default
# gateway list (enabled by default)
# net.ipv4.conf.all.secure_redirects = 1
#
# Do not send ICMP redirects (we are not a router)
#net.ipv4.conf.all.send_redirects = 0
#
# Do not accept IP source route packets (we are not a router)
#net.ipv4.conf.all.accept_source_route = 0
#net.ipv6.conf.all.accept_source_route = 0
#
# Log Martian Packets
#net.ipv4.conf.all.log_martians = 1
#

### Screwed up
What should I restart in /etc/init.d?
########################################################################




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