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Fast(?) Internet - ADSL/Cable Modems
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Fast(?) Internet - ADSL/Cable Modems
- Fast Internet, today, includes a lot of hype, and 2 major types of
connections: cable modems and ADSL.
- In each case, we first install an Ethernet card on our system, and place
some device at our house, that connects our tiny home LAN to the network
of the communications provider. Lately, Bezeq has been using
providing (or selling) ADSL modems that connect to the computer
via USB, or even internal (PCI) ADSL modems.
Cable Modems
- A cable modem is more like a small gateway, that connects to an Ethernet
LAN on one side, and to the cable t.v. data socket on the other side.
- These devices provide the same bandwidth for both upload and
download, as opposed to ADSL modems, which are Asymetric - they
have small upload bandwidth and large download bandwidth.
- For more information on how to connect using cables, please see
the Cables-DHCP-pptp-HOWTO.
ADSL
- ADSL (Asymmetric Digital Subscriber Line) connections are done using ADSL
modems, over regular phone lines.
- ADSL modems supply a bandwidth of 1.5M bps (or sometimes more) in the down
direction, and 64K bps (or sometimes more) in the up direction. The exact
speed changes with the distance between the end-user and Bezeq's local
communications exchange.
- The actual Internet service is provided by Israeli ISPs, not by Bezeq,
which dictates a very strange setup.
- In order to have the connection working, there is a need to first install
an Ethernet controller in the computer, and connect it to the
ADSL modem, or install a USB (or PCI) ADSL modem.
- Software-wise, there is a need to run a PPP connection over the LAN, to
Bezeq's network, and run it over a PPTP (Point-to-Point Tunneling
Protocol) connection. This means - not trivial!
- The latest version of the Bezeq-ADSL-Howto with detailed
instructions on how to set up ADSL can be found at
ADSL howto on
Muli's homepage
- Some ADSL modems work with PPPoE, not pptp. Doron Shikmoni has
written a HOWTO on using PPPoE with
ADSL.
- For hebrew instructions on how to install ADSL and a
not-too-reliable script to automate some of the steps, see here.
- Lately Bezeq started to use USB ADSL modems and internal (PCI)
ADSL modems. We do not have concrete data which modems are
supported under Linux and which aren't, and recommed getting an
external ADSL modem, all of which are known to work.
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