Kernel options

[bsd hack]

Hi,
    I am working with the Kernel config file to optimize it and also to improve the overall security of the system!
 
I have the following quetions:
(1) There are a few options that are not available in the default kernel... like the IPFIREWALL options(and the like)... I basically need to know all possible options I can add to the kernel config file! 
(2) I guess these options can be used to set the kernel variables accessible through the sysctl command. So can I create my own options so that I can set a few kernel variables as and when I build the custom kernel?
(3) and also my aim includes optimizing the kernel... so by enabling only the options I need to I should get a get optimization... is there anything else that can be done?
(4) My aim is to improve local and network security. I guess enabling IPFIREWALL helps with the network security part.... are there any special options for local security?
 
Thank you.
 
HKR

		
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