Hello All, I m new to this mailing list and I don't know if somebody have faced such a problem and may have answerd to this question. I m using kernel 2.4.22 and iptables rpm 1.2.7a-2. I compiled a kernel to support the Network filtering successfully. But when i issued the following command iptables -A INPUT -s 127.0.0.1 -p icmp -j DROP i got the following error /lib/modules/2.4.22/kernel/net/ipv4/netfilter/ip_tables.o: unresolved symbol nf_register_sockopt_Rsmp_f5985dce /lib/modules/2.4.22/kernel/net/ipv4/netfilter/ip_tables.o: unresolved symbol nf_unregister_sockopt_Rsmp_a5c3249c /lib/modules/2.4.22/kernel/net/ipv4/netfilter/ip_tables.o: insmod /lib/modules/2.4.22/kernel/net/ipv4/netfilter/ip_tables.o failed /lib/modules/2.4.22/kernel/net/ipv4/netfilter/ip_tables.o: insmod ip_tables failed iptables v1.2.7a: can't initialize iptables table `filter': iptables who? (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded. what this error means?do i need to update the iptables or kernel? Any help or hint would be appreciated Thanks in advance Manisha __________________________________ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/