http://www.linuxquestions.org/questions/blog.php?u=81180 LinuxQuestions.org offers a free Linux forum where Linux newbies can ask questions and Linux experts can offer advice. Topics include security, installation, networking and much more. en Tue, 24 Nov 2009 04:56:46 GMT vBulletin 60 http://e1h7.simplecdn.net/lqcdn/images/questions/images/misc/rss.jpg http://www.linuxquestions.org/questions/blog.php?u=81180 http://www.linuxquestions.org/questions/blog.php?b=289 Sat, 22 Apr 2006 13:06:15 GMT If trying remote dial-in is not enough..I will also have to enable Horde...on my debian box..wish me luck and a good linmodem...Well I will keep you... If trying remote dial-in is not enough..I will also have to enable Horde...on my debian box..wish me luck and a good linmodem...Well I will keep you folks updated about the progress ]]> ALInux http://www.linuxquestions.org/questions/blog.php?b=289 http://www.linuxquestions.org/questions/blog.php?b=183 Sun, 12 Feb 2006 13:42:04 GMT To do this...... I had to create a vpn server on the windows 2003 server...and edit user accounts in the active directory to allow vpn access... To do this......
I had to create a vpn server on the windows 2003 server...and edit user accounts in the active directory to allow vpn access through the dial-in tab...and add the dial up vpn connection on the laptops of the target vpn users.

But most important I had to edit my firewall to allow vpn traffic to pass through it...vpn is neither tcp nor udp it is pptp....I will post the firewall script when I get back to work
]]> ALInux http://www.linuxquestions.org/questions/blog.php?b=183 http://www.linuxquestions.org/questions/blog.php?b=182 Sun, 12 Feb 2006 13:38:55 GMT Hi this is a script for backing up the internet connection on a debian server...still buggy and testing it and not finished but someone might use... Hi this is a script for backing up the internet connection on a debian server...still buggy and testing it and not finished but someone might use it..

Assumptions:
1-pppoe always on connection "should be used as long as up"
2-cable limited backup connection
3-pppoe can not ping external IPs "ISP settings :S" so to test the connection either download a small file or resolve a hostname
4-If pppoe fails 3 times in a row switch to cable...when pppoe up again switch to it
5-pppoe and cable have different firewall setups ....these setups are stored in different firewall scripts which are executed depending on the active connection...


#!/bin/bash


wise="eth2" # wisebox connectedhere
rabbit="true" #assume rabbit is a up as a start condition
count=0 #initialise count to 0

#since the wise box connection is obsolete stop all traffic on it
iptables -I INPUT -i $wise -j DROP
iptables -I FORWARD -i $wise -j DROP
#iptables -I OUTPUT -i $wise -j DROP

#create a while loop to test for rabbit overall conditions

while [ $rabbit = "true" ]; do

#clear variable values each time
eth0="" # rabbit connected here
ppp0="" # pppoe link
conn="" # pppoe connectivity
conn2="" #second test of pppoe connectivity

#Test for eth0 link

eth0=`/sbin/ifconfig -a | grep "eth0"`
#note that in the if statement you have to enclose the variable in double quotes because the line repeated by $eth0 contains whitespaces
if [ -n "$eth0" ];then # -n tests to see if the argument is non empty
echo "eth0 is up"
else
echo "eth0 is down"
echo -e " `date` NOCCBOX says eth0 is down" >> /var/log/syslog
rabbit="false"
fi

#Test for pppoe link

ppp0=`/sbin/ifconfig -a | grep "ppp0"`
if [ -n "$ppp0" ]; then # -n tests to see if the argument is non empty
echo "ppp0 is up"
else
echo "ppp0 is down"
echo -e " `date` NOCCBOX says ppp0 is down" >> /var/log/syslog
rabbit="false"
fi

#Test for pppoe connectivity

conn=`ping -c 1 -W 3 www.nocclb.com | grep "65.75.128.46"`
if [ -n "$conn" ]; then # -n tests to see if the argument is non empty
echo "conn is up"
count=0 #reset counter
else
conn2=`ping -c 1 -W 3 www.google.com | grep "66.102.9"` #dont insert the last octet since google has multiple IP which differ according to last octet
if [ -n "$conn2" ]; then
echo "conn is up in second test"
count=0 #reset counter
else
echo "conn is down"
echo -e " `date` NOCCBOX says conn is down" >> /var/log/syslog
#Increment count by 1
count=$((count + 1))
if[ $((count = 3)) ]; then #after three consecutive fails set rabbit false
rabbit="false"
fi


sleep 60 #sleep for one minute before retrying

done #end of while loop

#now that rabbit failed the connection should switch to the wisebox cable connection
echo -e " `date` switching to wisebox connection" >> /var/log/syslog

#clear the routing table

#fetch dns info and default gw
dhclient $wise

#call the wisebox firewall script
#sh nocc.cable.wise.sh

while [ $rabbit = "false" ]; do


eth0=`/sbin/ifconfig -a | grep "eth0"`
if [ -n "$eth0" ];then # -n tests to see if the argument is non empty
echo "eth0 is up while in wisebox"
#If eth0 up test for pppoe link
ppp0=`/sbin/ifconfig -a | grep "ppp0"`
if [ -n "$ppp0" ]; then # -n tests to see if the argument is non empty
echo "ppp0 is up while in wisebox"
#Test for pppoe connectivity since both ppp0 and eth0 are up
#get the ip address of the gateway of the pppoe connection
gateway=`ifconfig ppp0 | grep "inet addr:" | awk -F : '{print$2}'| awk '{print$1}'`
#get the ip address of the pppoe for wget
ppp0_address=`ifconfig ppp0 | grep "inet addr:" | awk -F : '{print$2}' | awk '{print$1}'`
#add entry into routing table to allow to ping through pppo if it is up to check for connectivity
route add $gateway dev ppp0
#flush dns cache
service named stop
service named start
ifconfig eth2 down #stop wise.....testing here only might be totally wrong
#conn=`ping -I ppp0 -c 1 -W 3 www.nocclb.com | grep "65.75.128.46"`
#check if a file can be downloaded by binding the address of ppp0 to the download command
ppp0_test=`wget --bind-address=$ppp0_address http://bihnet.linux.tucows.com/files/snes9express-1.26-2.src.rpm`
if [ -n "$conn" ]; then # -n tests to see if the argument is non empty
echo "conn is up"
else
conn2=`ping -c1 -W 3 www.google.com | grep "66.102.9"` #dont insert the last octet since google has multiple IP which differ according to last octet
if [ -n "$conn2" ]; then
echo "conn is up "
echo -e " `date` conn is up" >> /var/log/syslog
rabbit="true"
fi
fi

sleep 60

done

#Now that rabbit evaluated true......the routing table has to be reset again and the dns reset and pppoe firewall script has to be executed
#after that the script calls it self again and executes..this guarantees that the script will always be running

#fetch dns info and default gw
dhclient eth0

#reset routing table

#call firewall script
# sh firwall.pppoe.script.sh

#call this script
chmod u+x fail.sh
sh fail.sh
]]> ALInux http://www.linuxquestions.org/questions/blog.php?b=182 http://www.linuxquestions.org/questions/blog.php?b=181 Sun, 12 Feb 2006 13:33:18 GMT Since Ive got my new job........I have been in this permanent dilemna of determining the position of the config files in debian ...they are almost... Since Ive got my new job........I have been in this permanent dilemna of determining the position of the config files in debian ...they are almost all in dirs different from my FC distro......but since debian was doing such a stable and wonderfull job...and apt-get rocks......I switched to debian sarge....Awesome debian really awesome........ ]]> ALInux http://www.linuxquestions.org/questions/blog.php?b=181 http://www.linuxquestions.org/questions/blog.php?b=180 Sun, 12 Feb 2006 13:33:00 GMT Since Ive got my new job........I have been in this permanent dilemna of determining the position of the config files in debian ...they are almost... Since Ive got my new job........I have been in this permanent dilemna of determining the position of the config files in debian ...they are almost all in dirs different from my FC distro......but since debian was doing such a stable and wonderfull job...and apt-get rocks......I switched to debian sarge....Awesome Things this debian... ]]> ALInux http://www.linuxquestions.org/questions/blog.php?b=180 http://www.linuxquestions.org/questions/blog.php?b=45 Thu, 15 Dec 2005 10:46:58 GMT I was starting to like slack.......but slapt-get did not do the job for me.....I needed something like urpmi or yum....anyhow....Iam back on FC4 now.. I was starting to like slack.......but slapt-get did not do the job for me.....I needed something like urpmi or yum....anyhow....Iam back on FC4 now.. ]]> ALInux http://www.linuxquestions.org/questions/blog.php?b=45