My Notepad

The instruction for cisco vpn client installtion under linux is available here:
http://security.sc.edu/tools/vpn/instruct/vpnclient_linux.html

However, you will get error if you are using 2.6.14 Kernel linux, what I experienced is
like this :
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[root@goblin vpnclient]# ./vpn_install
Cisco Systems VPN Client Version 4.6.00 (0045) Linux Installer
Copyright (C) 1998-2004 Cisco Systems, Inc. All Rights Reserved.

By installing this product you agree that you have read the
license.txt file (The VPN Client license) and will comply with
its terms.


Directory where binaries will be installed [/usr/local/bin]/usr/local/vpn_cisco/bin

Directory "/usr/local/vpn_cisco/bin" doesn't exist. Create ? [y]y

Automatically start the VPN service at boot time [yes]yes

In order to build the VPN kernel module, you must have the
kernel headers for the version of the kernel you are running.


Directory containing linux kernel source code [/lib/modules/2.6.14-1.1653_FC4/build]

* Binaries will be installed in "/usr/local/vpn_cisco/bin".
* Modules will be installed in "/lib/modules/2.6.14-1.1653_FC4/CiscoVPN".
* The VPN service will be started AUTOMATICALLY at boot time.
* Kernel source from "/lib/modules/2.6.14-1.1653_FC4/build" will be used to build the module.

Is the above correct [y]y

Create directory "/usr/local/vpn_cisco/bin".
Making module
make -C /lib/modules/2.6.14-1.1653_FC4/build SUBDIRS=/home/synew/download/vpnclient modules
make[1]: Entering directory `/usr/src/kernels/2.6.14-1.1653_FC4-i686'
CC [M] /home/synew/download/vpnclient/linuxcniapi.o
/home/synew/download/vpnclient/linuxcniapi.c: In function ‘CniInjectReceive’:
/home/synew/download/vpnclient/linuxcniapi.c:315: error: ‘struct sk_buff’ has no member named ‘stamp’
/home/synew/download/vpnclient/linuxcniapi.c: In function ‘CniInjectSend’:
/home/synew/download/vpnclient/linuxcniapi.c:452: error: ‘struct sk_buff’ has no member named ‘stamp’
make[2]: *** [/home/synew/download/vpnclient/linuxcniapi.o] Error 1
make[1]: *** [_module_/home/synew/download/vpnclient] Error 2
make[1]: Leaving directory `/usr/src/kernels/2.6.14-1.1653_FC4-i686'
make: *** [default] Error 2
Failed to make module "cisco_ipsec.ko".
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The reason for this is beacuse some changes between 2.6.13 and 2.6.14, to work around, we need a patch for vpnclient code:
(Details available at: http://www.daimi.au.dk/~u981101/vpn_client_fc4/)
1) download
vpnclient-linux-4.7.00.0640-k9_kernel-2.6.14-1.1637_FC4.patch from the link above.

2) Make sure put the patch file under src directry of vpnclient.
[root@goblin vpnclient]#cd /home/synew/download/vpnclient/
[root@goblin vpnclient]# patch <>
patching file linuxcniapi.c
Hunk #1 succeeded at 299 with fuzz 2 (offset 23 lines).
Hunk #3 succeeded at 414 (offset 20 lines).

3)make clean
4)./vpn_install