set up firewall to allow only one ip address

iptables -F
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT ACCEPT
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -L -v
iptables -A INPUT -s 111.111.111.111 -j ACCEPT # change the IP address as appropriate
iptables-save
rcSuSEfirewall2 restart

do not forget to start firewall automatically

iphone tunnel suite 2.7 does not work any more with iPhoen firmware 3.0

take i-funbox which is very good: http://www.i-funbox.com/

get information about devices

To get information about devices attached to a computer run the command:

blkid

tethering

Follow this steps and you can connect your laptop to the
internet through your iphone

http://help.benm.at/help.php

convert flv to mpg

ffmpeg -i test.flv -ar 22050 -ab 56 -r 25 -f flv -b 400 -qmin 3 -qmax 6 -s 320x240 test.mpg

convert AVI to DVD format

1) -> (mencoder -o out.avi -noidx -oac copy -ovc copy ccmovie.avi)
-> ffmpeg -i out.avi -y -target ntsc-dvd -sameq -aspect 16:9 out.mpg
-> dvdauthor --title -o dvd -f out.mpg
-> dvdauthor -o dvd -T
-> mkisofs -dvd-video -o dvd.iso dvd/
-> growisofs -dvd-compat -dvd-video -speed=4 -Z /dev/dvd dvd/*

OR

2) devede

show MAC address

To see the MAC address of a host in the network do the following:
a) ping host
b) arp -a or arp -a host