Unable to install vpnclient-linux-3.7.3.A-k9.tar.gz
I'm trying to install a VPN client without much luck. I want to use my Linux box to VPN and Remote Desktop into my work box. Since I'm new, I'm not sure what is missing, if anything. I've pasted the short install dump from my terminal below: (if it's not obvious to anyone, could it just be incompatibility between software and OS?)
[root@localhost vpnclient]# ./vpn_install
Cisco Systems VPN Client Version 3.7.3 (A) Linux Installer
Copyright (C) 1998-2001 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
Directory where binaries will be installed [/usr/local/bin]
Automatically start the VPN service at boot time [yes]
In order to build the VPN kernel module, you must have the
kernel headers for the version of the kernel you are running.
For RedHat 6.x users these files are installed in /usr/src/linux by default
For RedHat 7.x users these files are installed in /usr/src/linux-2.4 by default
For Suse 7.3 users these files are installed in /usr/src/linux-2.4.10.SuSE by default
Directory containing linux kernel source code  /usr/src/redhat/SOURCES
* Binaries will be installed in "/usr/local/bin".
* Modules will be installed in "/lib/modules/2.4.22-1.2115.nptl/CiscoVPN".
* The VPN service will be started AUTOMATICALLY at boot time.
* Kernel source from "/usr/src/redhat/SOURCES" will be used to build the module.
Is the above correct [y]
./driver_build.sh: line 44: cc: command not found
./driver_build.sh: line 45: cc: command not found
./driver_build.sh: line 46: cc: command not found
./driver_build.sh: line 47: cc: command not found
./driver_build.sh: line 48: ld: command not found
Failed to make module "cisco_ipsec".