Etc/Sysconfig/Iptables-Config; Etc/Sysconfig/Irda - Red Hat ENTERPRISE LINUX 5 - DEPLOYMENT Deployment Manual

Chapter 28. The sysconfig Directory
Once this file exists, any firewall rules saved in it persists through a system reboot or a service restart.
For more information on ip6tables, refer to

28.1.16. /etc/sysconfig/iptables-config

The /etc/sysconfig/iptables-config file stores information used by the kernel to set up
packet filtering services at boot time or whenever the service is started.
Do not modify this file by hand unless you are familiar with constructing iptables rules. The
easiest way to add rules is to use the Security Level Configuration Tool (system-config-
securitylevel) application to create a firewall. These applications automatically edit this file at the
end of the process.
Rules can also be created manually using the /sbin/iptables command. Once created, add the
rule(s) to the /etc/sysconfig/iptables file by typing the following command:
/sbin/service iptables save
Once this file exists, any firewall rules saved in it persists through a system reboot or a service restart.
For more information on iptables, refer to

28.1.17. /etc/sysconfig/irda

The /etc/sysconfig/irda file controls how infrared devices on the system are configured at
startup.
The following values may be used:
• IRDA=<value>, where <value> is one of the following boolean values:
• yes — irattach runs and periodically checks to see if anything is trying to connect to the
infrared port, such as another notebook computer trying to make a network connection. For
infrared devices to work on the system, this line must be set to yes.
• no — irattach does not run, preventing infrared device communication.
• DEVICE=<value>, where <value> is the device (usually a serial port) that handles infrared
connections. A sample serial device entry could be /dev/ttyS2.
• DONGLE=<value>, where <value> specifies the type of dongle being used for infrared
communication. This setting exists for people who use serial dongles rather than real infrared ports.
A dongle is a device that is attached to a traditional serial port to communicate via infrared. This line
is commented out by default because notebooks with real infrared ports are far more common than
computers with add-on dongles. A sample dongle entry could be actisys+.
• DISCOVERY=<value>, where <value> is one of the following boolean values:
• yes — Starts irattach in discovery mode, meaning it actively checks for other infrared devices.
This must be turned on for the machine to actively look for an infrared connection (meaning the
peer that does not initiate the connection).
• no — Does not start irattach in discovery mode.
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Section 43.9, "IPTables".
Section 43.9, "IPTables".