A Line Dropped By A Ghost

Welcome to another quick walkthru by me… be very scared. Anyway, this time around I will show you how to install and get working a Pent@value PCI satellite card in Debian Linux.

Notes about this guide

This guide is not the be all and end all on how to get this hardware to work. It is how I got it to work after hours of hitting my head on the keyboard (I have an “e” key stuck where my left eye was..) and some haressment of knowledgable friends.

Thanks and Credits

Lauchlin Wilkinson at Internet Tasmania for helping me all the way from Thailand.

Software Required

• Debian Linux (Woody) with Kernel 2.2 or 2.4 (recommened), 2.6 won’t work with this guide.
• Pen@value linux tarball which comes on the installation CD
• Access to the internet to grab the needed packages from the apt-get system
• You will need to check some of the package names with version numbers to make sure they are the correct ones in the repositary. Do this using:
  apt-cache search

Installation

1. Install the PCI card and boot the machine
2. Best to install all the needed software from apt-get before moving on
3. run apt-get to install the foloowing packages (you need to root for this):
   apt-get install libglib1.2-dev libgtk1.2-dev automake binutils bzip2 fileutils make gcc-2.95 libncurses5-dev

You will need to get the header and source files for you kernel version.
apt-get install kernel-headers-2.4.18-386 kernel-source-2.4.18

4. Link your kernel libraries:
   ln -s /usr/src/kernel-headers2.4.18-386 /usr/src/linux
5. Copy and untar the pent@value linux tarball off the cd to your home directory
6. Go into the directory it makes and run the configure file
   ./configure
7. Go into the driver directory that is created and edit MakeFile
   vim MakeFile
8. Change the line that look like this: CFLAGS = -march=i486 -DCPU=486 -D__SMP___ -DMODVERSIONS etc
   Add -I /usr/src/linux/include before the \ at the end of the line
9. Save and quit and go back a directory and make the install:
   make
   and then
   make install
10. If all went well you will now have a pentaval driver which you can now assign a network interface:
    ifconfig pentaval0 192.168.1.1
11. You need to add two modules into you configuration so they exist after next boot. Edit /etc/modules and add:
    pentaval
scanval

    In that order.
12. You also need to add an interface for next boot. Edit /etc/network/interfaces and add:
    
auto pentaval0
iface pentaval0 inet static
address 192.168.1.1
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255

13. Next return to where you untared the original install files and copy the satellite tuning file into etc.
    cp pentaval-2.1.7/etc/pentaval.conf /etc/
14. Edit the pentaval.conf file in etc and change the values to your providers settings
15. Next is the big test.. lets see if you have satellite lock. Go back to your original install directory and then go into apps/text/ and run:
    pentaval -a (try to get lock)
    pentaval -s (status)
    pentaval -d (unlock)
16. Lastly you need to create a script to allow asymetric routing which is normally not allowed with a standard install. Create a file in /etc/rc.boot/pentaval and make it executable then add:
    
#!/bin/sh
#
# turn off ip spoofing on the sat card
echo "0" > /proc/sys/net/ipv4/conf/pentaval0/rp_filter


    BE WARNED: This is actually allowing any packet to come into this network device not to be dropped before getting into the tcp stack for processing. This is a security problem, so don’t do it on your ethernet card or anything. The reason we change this is because normally packets are dropped if a request wasn’t originally send from the same interface recieving it. This is a problem since this is a one way satellite card. Your outgoing requests will be done by a modem or some other device.

17. Lastly is to test it on the network, dail up you provider using your modem or isdn modem and give it a go. Use the pentaval app to check the status and packets received.

Any questions and comment feel free to to drop me a line, but be warned I ain’t no expert.

This entry was posted on Monday, March 21st, 2005 at 11:22 pm and is filed under Linux. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.