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VPN Connection in Ubuntu using VPNC
VPNC, alternate VPN client for Cisco servers. Installing VPNC:
1. Enter the following in the terminal to install VPNC on your computer:
sudo apt-get install vpnc resolvconf 2. Create a <filename>.conf file in /etc/vpnc/ . Enter following command to create myoffice.conf:
sudo gedit /etc/vpnc/myoffice.conf 3. Copy the following text to that myoffice.conf file:
IPSec gateway <server IP address>
IPSec ID <group name>
IPSec secret <group password>
Xauth username <username> You can get the values for <server IP address>, <group name> and <group password> by opening your Cisco VPN client .pcf file. For <group password>, the value is encrypted. What you have to do is, copy all the characters from the “enc_GroupPwd” value, go to this cisco vpnclient password decoder site, paste the characters and click “Decode”. It will give you the decrypted group password. Now, copy the decrypted password and replace it with the <group password> in your myoffice.conf. Replace your user name to <username>. Save the file and close. Running VPNC:
You can run VPNC simply by running this command:
sudo vpnc myoffice /etc/vpnc/myoffice.conf Enter your VPN password once connected. To disconnect:
sudo vpnc-disconnect Making it work with Firestarter:
You might have a problem accessing for company’s intranet if you have Firestarter installed. Instructions below will make it work. 1. Edit /etc/firestarter/user-pre . First, make the file writable:
sudo chmod 600 /etc/firestarter/user-pre 2. Edit the file:
sudo gedit /etc/firestarter/user-pre 3. Copy the following to the file:
iptables -A INPUT -j ACCEPT -s xxx.xxx.xx.xxx -p esp
iptables -A INPUT -j ACCEPT -s xxx.xxx.xx.xxx -p udp -m multiport --sports isakmp,10000
iptables -A INPUT -j ACCEPT -i tun+
iptables -A OUTPUT -j ACCEPT -d xxx.xxx.xx.xxx -p esp
iptables -A OUTPUT -j ACCEPT -d xxx.xxx.xx.xxx -p udp -m multiport --dports isakmp,10000
iptables -A OUTPUT -j ACCEPT -o tun+ Replace your VPN server’s IP address to the xxx.xxx.xx.xxx. 4. Save the file and close.
5. Change the user-pre file permission back to the way it was:
sudo chmod 440 /etc/firestarter/user-pre 6. Restart Firestarter:
sudo /etc/init.d/firestarter restart |
VPN Connection in Ubuntu using VPNC
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The copyright for this content entitled "VPN Connection in Ubuntu using VPNC" has been specified by the contributor as:
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This intel was contributed by nazham
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May, 2012
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