UPDATE: A new client for linux (4.8.02.0030) is out. You no longer need the patch for 2.6.24+ kernel (vpnclient-linux-2.6.24-final.diff). However a patch for 64 bit systems is still required and the CFLAGS variable in Makefile must be changed to EXTRA_CFLAGS.
I assume that you have the latest version 4.8.01.0640 and the required packages for compiling.
If you install the original Cisco VPN client on Hardy you will receive the following error:
make -C /lib/modules/2.6.24-16-generic/build SUBDIRS=/home/lamnk/src/vpn/vpnclient modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.24-16-generic’
scripts/Makefile.build:46: *** CFLAGS was changed in “/home/lamnk/src/vpn/vpnclient/Makefile”. Fix it to use EXTRA_CFLAGS. Stop.
make[1]: *** [_module_/home/lamnk/src/vpn/vpnclient] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-2.6.24-16-generic’
make: *** [default] Error 2
As those lines point out, you need to edit the Makefile file in the vpnclient folder and change CFLAGS to EXTRA_CFLAGS: Change the following line in Makefile
CFLAGS += -mcmodel=kernel -mno-red-zone
to
EXTRA_CFLAGS += -mcmodel=kernel -mno-red-zone
then apply the 2 patches for kernel 2.6.24 and for 64 bit:
vpnclient_folder$ wget lamnk.com/vpnclient-linux-2.6.24-final.diff
vpnclient_folder$ wget lamnk.com/cisco_skbuff_offset.patch
vpnclient_folder$ patch < ./vpnclient-linux-2.6.24-final.diff
vpnclient_folder$ patch < ./cisco_skbuff_offset.patch
vpnclient_folder$ ./vpn_install
If your system is 32 bit then you only need to patch the vpnclient-linux-2.6.24-final.diff file.
The patch for 64 bit system is from Stephen Frost and the patch for kernel 2.6.24 is from Alexander Griesser. Seriously Cisco should pay those guys some money … If these patches help you then please consider donate them.
Comments 2
Thank you for this. The installation for me worked fine with your patches. However, when I try to run the vpnclient, I get this message:
sudo vpnclient connect LinuxUsers
Cisco Systems VPN Client Version 4.8.01 (0640)
Copyright (C) 1998-2007 Cisco Systems, Inc. All Rights Reserved.
Client Type(s): Linux
Running on: Linux 2.6.24-16-generic #1 SMP Thu Apr 10 12:47:45 UTC 2008 x86_64
Config file directory: /etc/opt/cisco-vpnclient
Initializing the VPN connection.
Secure VPN Connection terminated locally by the Client
Reason: Failed to establish a VPN connection.
There are no new notification messages at this time.
Do you have any idea of what I am doing wrong?
Posted 21 May 2008 at 12:06 am ¶Thank you!
It worked now. My problem was the wireless connection. Vpn worked fine with your patches, after I fixed the wireless.
Posted 21 May 2008 at 9:49 pm ¶Thank you!
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