안녕하세요.  Redhat 7.2 kernel 2.4.18 쓰고 있는데요.
 iptables를 사용 못하고 있어요.
 /lib/modules/2.4.18-17.7.x/kernel/net/ipv4/netfilter/ip_tables.o: init_module: Device or resource busy
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
      You may find more information in syslog or the output from dmesg
/lib/modules/2.4.18-17.7.x/kernel/net/ipv4/netfilter/ip_tables.o: insmod /lib/modules/2.4.18-17.7.x/kernel/net/ipv4/netf
ilter/ip_tables.o failed /lib/modules/2.4.18-17.7.x/kernel/net/ipv4/netfilter/ip_tables.o: insmod ip_tables failed
iptables v1.2.5: can't initialize iptables table `filter': iptables who? (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
 이런 오류만 뜨네요.
 초보라 그런지 뭐가 뭔지 모르겠어요.
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