I just followed the instructions in 'Red Hat Linux 8 For Dummies' to setup a firewall. For some reason it doesn't work. The book uses an example for a modem, but I need to make it work for an Ethernet. There is only one NIC in the computer and the LAN going to the internet is connected to it. I tried it verbatim to the book and failed. One line has an error so I changed it. The changed line is marked with an asterisk. iptables --flush iptables --flush -t nat iptables -A INPUT -j DROP iptables -A OUTPUT -j DROP iptables -A OUTPUT -j ACCEPT -o lo iptables -A INPUT j ACCEPT -i lo * iptables -A INPUT -j ACCEPT -i lo iptables -A OUTPUT -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT When I turn off the firewall, I can access the internet, but with it on, I cannot access the internet. My status of iptables is: Chain INPUT (policy ACCEPT) Target prot opt source destination DROP all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED Chain FOREWARD (policy ACCEPT) Target prot opt source destination Chain INPUT (policy ACCEPT) Target prot opt source destination DROP all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere state NEW,RELATED,ESTABLISHED Chain RH-Lokkit-0-50-INPUT (0 references) Target prot opt source destination I have tried /etc/init.d/iptables start and I have no access to the internet, but when I do "stop" instead, I have full access so I am positive it is the firewall. Thanks for the help, Buck -- Psyche-list mailing list Psyche-list@redhat.com https://listman.redhat.com/mailman/listinfo/psyche-list
