Hi, I am a newbie in iptable installation. While I was installing iptable 1.2.11, what's KERNEL_DIR? Is it the kernel directory that used to store the newly compiled kernel or kernel source code used to compile iptable? I also have following questions. I compiled iptable by following as instructed in INSTALLfile: 1. make KERNEL_DIR="/boot" 2. make install KERNEL_DIR="/boot" But when I execute "iptables -A POSTROUTING -t NAT -o eth0 -j MASQUERADE" " ./iptables -A POSTROUTING -t NAT -o eth0 -j MASQUERADE iptables: target `MASQUERADE' v1.2.10 (I'm v1.2.11)." Looks like I am totally lost here. Can someone shed some light here? Thanks, Wesley