Technical data
4. Packages
#! /bin/sh
dev='/dev/ttyS0' # COM1, for COM2: ttyS1
speed='38400' # speed
options='defaultroute crtscts' # options
myip='192.168.4.2' # IP address client
fli4lip='192.168.4.1' # IP address fli4l router
pppd $dev $speed $options $myip:$fli4lip &
In case of problems: man pppd
The fli4l router has to be used as the DNS server on the client if a connection to the
Internet is desired. Add two lines to /etc/resolv.conf on the client: the domain used and
the ethernet IP address of the fli4l router as name server.
Example:
search domain.de
nameserver 192.168.1.4
“domain.de” res. “192.168.1.4” have to be changed to your needs. Important: The IP
address has to be the one of fli4l’s ethernet card!
A so called null modem cable (Page 340) is used as the physical connection. See appendix
for package base for pin wirings.
A (german) Howto for connecting a Windows client with serial PPP can be found at:
http://www.fli4l.de/hilfe/howtos/basteleien/opt-ppp-howto/
4.17. PROXY - Several Proxy Servers
4.17.1. OPT_PRIVOXY - A HTTP-Proxy Not Only For Ad Filtering
The Privoxy homepage (http://www.privoxy.org/) qualifies it as a “Privacy Enhancing Proxy”.
As a side-effect it replaces ad banners and popups with empty pictures, prevents saving of
unwanted cookies (small files which make it possible for websites to track users) and so-called
web-bugs (1x1 pixel sized pictures that are also used to track user behavior).
Privoxy can be configured and deactivated via a web interface (as long as its running). This
web interface is found at http://config.privoxy.org/ or http://p.p/. This configuration does
not survive reboots. . .
Privoxy is an enhancement of Internet Junkbuster which has been contained in this package
till version 2.1.0 (http://www.junkbuster.com/). All filtering rules are defined in a central file
default.action. On fli4l it can be found in the directory /etc/privoxy. The main advantage
of this method is that new versions can be downloaded separately at
http://sourceforge.net/projects/ijbswa/files/. Each user of fli4l can keep the file up-to-
date in this way without the need for fli4l updates.
PRIVOXY_MENU Adds a privoxy entry to the httpd menu.
PRIVOXY_N Sets the number of privoxy instances that should be started.
187