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Linux firewall settings-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Modify the/etc/sysconfig/iptables file to modify the firewall configuration. If you want to open a port, add
-A RH-Firewall-1-INPUT-m state -- state NEW-m tcp-p tcp -- dport 1521-j ACCEPT
1521 indicates the port number to be opened, and then restart the Firewall Service in linux.
Command to stop/start the Firewall Service:
Service iptables stop -- stop
Service iptables start -- start
(The service command is located in/sbin)
Firewall Rules can be activated only when the iptables service is running. To manually start the service, run the following command:
/Sbin rvice iptables restart
To ensure that it is started during system boot, run the following command:
/Sbin/chkconfig -- level 345 iptables on
The ipchains service cannot run with the iptables service at the same time. To disable the ipchains service, run the following command:
/Sbin/chkconfig -- level 345 ipchains off
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