IPSec install on FC4 - may require kernel configuration ?
 

I have FC4 with kernel version 2.6.11**, and trying to install ipsec-tools version 0.6*. I am following an instruction for ipsec-tools version 0.5, and kernel version 2.5*

However, the instruction saying to reconfigure the kernel, and turn the IPSec features on. But I am not sure how to configure the kernel, and how to turn on this feature ? Do I need to reinstall keernel?...can any body help me out there please?

what are these instructions? what do they say? to install ipsec-tools, for example, just do "yum install ipsec-tools"

This is an IPSec Howto, I have the hard copy (author Ralf Spenneberg, dtd 2003-08-18). The instruction says about linux OS (noy any particular distribution) , that said installation requires atleast a Linux Kerner version 2.5.47 or 2.6. When configuraing the kernel, it is important, to turn on the following features on :
Networking support (NET) [Y/n/?] y
PF_KEY sockets (NET_KEY) [Y/y/n/?] y
etc.
etc.

Cryptographic API [Y/n/?] y
HMAC support (CRYPTO) [Y/n/?] y
etc.
etc.

After kernel configuration, it ask to download ipsec-tools from http://ipsec-tools.sourceforge.net/
and do the following..
./configure --with-kernel-header=/lib/modules/2.6.X/build/include
make
make install

And then we would expect all the IPSec files in the system , like /sbin/setkey, /lib/libipsec.so etc. etc.

Two major questions (2nd one is more important):
1. Here at FC4 "yum" just works well,but do you think the kernel configuration is taken care of by this yum ?
2. what should we do for CentOS 4.2 (found by cat /etc/redhat-release), krenel version 2.6.9* ? Can you please help me on this , too. Because - I would actually do the IPSec install on RedHat Linux, at FC4 I am only testing it.

Many thanks for your help.