Compiling the Kernel Without Losing my Old Configuration...

From: PremChandraKumar.N (pckumar_n@yahoo.com)
Date: 01/30/02 

Date: Wed, 30 Jan 2002 12:01:19 +0530
From: "PremChandraKumar.N" <pckumar_n@yahoo.com>
To: "security-discuss@linuxsecurity.com" <security-discuss@linuxsecurity.com>

Hi All,

I had configured RedHat Linux 7.1 as internet Gateway Server. When i try
to add the module ip_nat_ftp. It gives the following error

Using /lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_conntrack_expect_related_Ree85aab5
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_nat_expect_register_R22ca4f64
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_nat_helper_register_Rd999d6f2
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_nat_expect_unregister_R5ca5c902
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_nat_cheat_check_R1e4e73a8
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_nat_setup_info_Rd1af8d2b
/lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_nat_ftp.o: unresolved
symbol ip_nat_helper_unregister_Rdadfe31d

I know that i have to compile the kernel , by enabling Network Packet
Filtering, etc.

Can anybody tell me, how to compile the Kernel with new Options without
Losing my old Configuration.( ie. Both New and Old Configuration should
work).

Regards
Prem

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