Micro-firewall compiled into the kernel

I found an example of some firewall code using the netfilter hooks on
the web, the URL is www.geocities.com/victorhugo83/micro_firewall.c.
This code is supposed to be compilied into a kernel module. However,
I can't get it to compile on my system.

When I issue the "cc -c micro_firewall.c" command, I get:

In file included from /usr/include/linux/highmem.h:5,
from /usr/include/linux/skbuff.h:26,
from micro_firewall.c:13
/usr/include/asm/pgalloc.h:6:24 asm/fixmap.h: No such file or
directory

I am using kernel version 2.4.20-20.7 with the kernel source
installed. Any assistance would be greatly appreciated.

Russell Markus
(E-Mail Removed)

(E-Mail Removed) (Russell Markus) wrote:

>I found an example of some firewall code using the netfilter hooks on
>the web, the URL is www.geocities.com/victorhugo83/micro_firewall.c.
>This code is supposed to be compilied into a kernel module. However,
>I can't get it to compile on my system.
>
>When I issue the "cc -c micro_firewall.c" command, I get:
>
>In file included from /usr/include/linux/highmem.h:5,
> from /usr/include/linux/skbuff.h:26,
> from micro_firewall.c:13
>/usr/include/asm/pgalloc.h:6:24 asm/fixmap.h: No such file or
>directory
>
>I am using kernel version 2.4.20-20.7 with the kernel source
>installed. Any assistance would be greatly appreciated.
>
>Russell Markus
>(E-Mail Removed)


What does this offer over the normally builtin "iptables" packet
filter? Maybe I'm not clear on the difference between a "firewall"
and "iptables".

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