????????linux???????????System->Administration->Firewall and SELinux?￡????Firewall??Disable?????????飬???????????Enable??
?????????????Щ????
????1)      ???????Ч??
????????? chkconfig iptables on
???????? chkconfig iptables off
????2)      ?????Ч????????Ч??
????????? service iptables start
???????? service iptables stop
?????????
????/etc/init.d/iptables status ??????????????????????????
????/etc/rc.d/init.d/iptables stop ???????
?????????
????????′????????????????????????/etc/sysconfig/iptables??
?????????????á?
??????
????????????????setup???????????ν??棬???Firewall configuration????????????棬???Security Level?Disabled?????檔??????ɡ?