> > Flushing firewall rules: [ OK ] > Setting chains to policy ACCEPT: filter nat [ OK ] > Unloading iptables modules: [FAILED] > Applying iptables firewall rules: [ OK ] > Loading additional iptables modules: nf_conntrack_netbios_n[ OK ] > > so if i try to ping to (any public ip) from client PC after > enabling iptables i get request time out, but i can browse websites > without any problem, and if i disable iptables i can get reply from > the (public ip) to which i am pinging and browsing also works. also > checked DNS resolution it works perfectly as browsing works. > > so i would like to know what is the reason of stopping ping > after enabling iptables and why i am getting Unloading iptables > modules FAILED. > Hi Yogesh, You need to allow icmp traffic so that you can ping the outside hosts. $IPTABLES -A INPUT -p icmp --icmp-type echo-request -s 192.168.1.0/24 -d 0/0 -j ACCEPT $IPTABLES -A INPUT -p icmp --icmp-type echo-reply -s 192.168.0.0/24 -d 0/0 -j ACCEPT. Better will be if you set the limit on the icmp-request/reply per second to avoid dos attacks. For unloading iptables modules error you need to check whether any message/errors appears in the /var/log/messages . Regards Ankush
