iptables rules?

Hi, my firewall looks like: Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Ping from the firewall-box to box A will be answered. A ping from box A to the firewall reaches but will not be answered. What do I have to do ? Thanks a lot for help Joerg Mit schönen Grüßen von Yahoo! Mail - http://mail.yahoo.de