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148 lines
4.8 KiB
Plaintext
148 lines
4.8 KiB
Plaintext
Internet connection sharing in Netsukuku HOWTO
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This document describes how to configure a Netsukuku node to share its
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Internet connection and how to configure another node that will use the shared
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connection.
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--
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* Internet Gateway Search
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* Prerequisites
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* How to share your Internet connection
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* How to connect to the Internet using a shared connection
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* Some nice feature you want to know
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--
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**
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*** Internet Gateway Search
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**
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If the nodes are in restricted mode (compatibility with the Internet), they
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can share their Internet connection. This can be easily done, in fact, if a
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node X, connected to the Internet, activates the masquerading, it is possible
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for the other nodes to connect by setting as the default gateway their rnode
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which lead to the node X.
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This can be automated by Netsukuku itself.
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The node which is sharing its connection will tell to the Netsukuku daemon to
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masquerade its connection and to set a specific flag in the QSPN packets.
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The other nodes in restricted mode will automatically know their nearest
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Netsukuku Internet gateway and set it in their default route.
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For more information read http://lab.dyne.org/Ntk_IGS .
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**
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*** Prerequisites
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**
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The IGS code of Netsukuku depends on the IPIP tunnel code of the kernel, so if
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you are using Linux be sure to have the `CONFIG_NET_IPIP' option set as a
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module or built-in.
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**
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*** How to share your Internet connection
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**
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First of all modify the /etc/netsukuku/netsukuku.conf file.
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Set `internet_connection' to 1.
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Set the `internet_gateway' option to the IP of the gateway you use to reach
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the Internet and specify the network interface too, for example:
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"internet_gateway = 192.168.1.1:eth0". This option is necessary only if you
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don't have the default route set when you run NetsukukuD (i.e. you haven't
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connected yet), otherwise, leave it commented.
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You have also to set your upload and download bandwidth in
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`internet_upload_rate' and `internet_download_rate'. It is expressed in Kb/s,
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so if you have a line which maximum can do: 640 Kb/s in dwload and 30 Kb/s in
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upload, set them to 640 and 30.
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`internet_ping_hosts' is a list of Internet hosts which will be pinged to
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verify if the connection is alive, you can use the default hosts.
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Finally, If you want to share your Internet connection among other Netsukuku
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nodes, set `share_internet' to 1.
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Ah, and you can set `shape_internet' to 1 if you want to shape your outgoing
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Internet traffic.
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---- netsukuku.conf snip ----
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internet_connection = 1
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internet_gateway = 192.168.1.1:eth0
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internet_download_rate = 640
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internet_upload_rate = 30
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internet_ping_hosts = google.com:cisco.com:sourceforge.net:dyne.org
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share_internet = 1
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shape_internet = 1
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---- snip end ----
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Now you are ready to launch the Netsukuku daemon. You have just to append the -I
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option in the command line. For example:
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# ntkd -i wlan0 -r -I
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**
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*** How to connect to the Internet using a shared connection
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**
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Just start the daemon in restricted mode, f.e:
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# ntkd -i wlan0 -r
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If you have an Internet connection and you don't want to share it, you have to
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set the correct options in netsukuku.conf:
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---- netsukuku.conf snip ----
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internet_connection = 1
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internet_gateway = 192.168.1.1:eth0
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internet_download_rate = 640
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internet_upload_rate = 30
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internet_ping_hosts = google.com:cisco.com:sourceforge.net:dyne.org
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share_internet = 0
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---- snip end ----
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If you don't, your Internet connection default route will be overwritten with
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that of another node.
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**
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*** Some nice feature you want to know
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**
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NetsukukuD supports a routing method called "multi inet gateway", this means
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that your node can connect to the Internet using, at the same time, multiple
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node which share their connection.
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If there are 5 nodes which share their 640Kb/s connections, you can have 5
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parallel downloads at 640Kb/s. Isn't it juicy?
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There's more: if you decide to share your Internet connection, you will always
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use the Internet connections shared by the other nodes, in this way you donate
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your bandwidth but, at the same time, you receive donations from other users.
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The other nice feature is the traffic shaping of your Internet connection (it
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doesn't matter if you're sharing it or not).
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If you decide to enable the relative option (shape_internet=1), NetsukukuD
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will execute the /etc/netsukuku/tc_shaper.sh script.
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This script shapes your Internet connection, this means that the traffic
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generated from your private LAN (192.168.x.x) and the low delay traffic (i.e.
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DNS, ssh...) are prioritised.
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The benefits are:
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* Even if you share your Internet connection to other Netsukuku nodes, your
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traffic will have the maximum priority, therefore you won't notices any
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slowdown
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* Even if you are downloading a big file, your lowdelay traffic will have the
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priority, therefor your ssh connections won't slow a bit
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PS: for more information read: http://lab.dyne.org/Ntk_IGS
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That's all,
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enjoy ^_^
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