Kubuntu 8.04 64bit essential apps install guide

3. CiscoSystemsVPNClient 64bit

Especially for securing business communication a lot of enterprises (like mine) are using the cisco vpn client. Because it suppresses every network communication except the vpn connection. The opensoucre alternative vpnc allows other network traffic by other devices even if your connect to your vpn. So it’s saver to use the cisco vpn client.
Get cisco vpn client 64bit here: http://tuxx-home.at/vpn/Linux/vpnclient-linux-x86_64-4.8.01.0640-k9.tar.gz.
1. Untar the VPN Client
$ tar -xzvf vpnclient-linux-4.8.01.0640-k9.tar.gz

2. Download the patch #1
$ wget http://projects.tuxx-home.at/ciscovpn/patches/vpnclient-linux-2.6.24-final.diff

3. Download the patch #2
$ wget http://projects.tuxx-home.at/ciscovpn/patches/cisco_skbuff_offset.patch

4. Change to the vpnclient diretory
$ cd vpnclient

5. Apply the patch #1
$ patch <../vpnclient-linux-2.6.24-final.diff
patching file GenDefs.h
patching file interceptor.c

6. Apply the patch #2
$ patch <../cisco_skbuff_offset.patch
patching file frag.c
patching file interceptor.c
Hunk #1 succeeded at 646 (offset 16 lines).
Hunk #2 succeeded at 685 (offset 16 lines).
Hunk #3 succeeded at 807 (offset 16 lines).
patching file linuxcniapi.c
patching file linuxkernelapi.c

7. Open your “Makefile” and rename the CFLAGS line to EXTRA_CFLAGS

8. Now the patches have been applied and you can safely install the client
$./vpn_install

9. Maybe you already have profiles from an old cisco vpn client installation. So just copy them into:”/etc/CiscoSystemsVPNClient/Profiles/” .

10. To get you vpn connections working you also have to import the root certificate for your vpn using cisco_cert_mgr.
$ ./cisco_cert_mgr -R -op import -f /path/to/your/rootcert

11. Now everything should work fine and you can connect to one of your vpn profiles.
$ ./vpnclient connect your_profile

12. To startup your vpn connection easier you can use a shell script like this:

#!/bin/sh
# restart to reinitialize the client
sudo /etc/init.d/vpnclient_init restart
# connect to your profile
sudo vpnclient connect your_profile

The script has to be executed as root! That’s it for the cisco_vpn_client.

Needs to be reinstalled after kernel-upgrade

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