You should add the following string(s) in the rc.firewall: iptables -A FORWARD -d 1.2.3.4 -j REJECT where 1.2.3.4 should be replaced with the address of the adult server to be blocked. You should repeat this string for all the servers you need to block. Of course, if you have many servers to block, you can use shell's operators (such as 'for') around that string to automatically replace the address for each server. For example: for i in <list_of_servers> ; do iptables -A FORWARD -d $i -j REJECT done Alexey Fadyushin. Brainbench MVP for Linux. http://www.brainbench.com > Thanks you are helping me >I have installed RedHat 8.0 that is with two eth card and runing as proxy server > >i have added rulesin rc.firewall file and proxy is working > ># Masquerade > >iptables -t nat -A POSTROUTING -o $EX_ETH -j MASQUERADE > >iptables -A OUTPUT -s $LOCAL_NET -o $EX_ETH -j ACCEPT > ># Turn on IP forwarding > >echo 1 > /proc/sys/net/ipv4/ip_forward > >so how can i block all adult sites > Alexey Fadyushin <fab@xxxxxxxxxxxx> wrote: If you need to block the access to that sites locally (i.e. from the computer on which you run iptables, you can use the following command: iptables -A OUTPUT -d -j REJECT alternatively, yuo can add the following string to /etc/sysconfig/iptables (in the 'filter' table): -A OUTPUT -d -j REJECT If you want to block the access from another machine, for which your computer is acting as a router, you should change 'OUTPUT' to 'FORWARD' in the examples above. Alexey Fadyushin. Brainbench MVP for Linux. http://www.brainbench.com Nilesh wrote: > > Hello > > How do i block Adult XXX sites through iptables > > can any one help me > > Thanks > > > ---------------------------------------------------------------------- > Do you Yahoo!? > Yahoo! Photos - Get your photo on the big screen in Times Square -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list Do you Yahoo!? Yahoo! Photos - Get your photo on the big screen in Times Square -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list