Users Guide

Setup and Administration 45
Configuring Your System to Send Traps to a Management Station
Server Administrator generates SNMP traps in response to changes in the status of sensors and other
monitored parameters. One or more trap destinations must be configured on the system running Server
Administrator for SNMP traps to be sent to a management station.
To configure your system running Server Administrator to send traps to a management station, edit the
/etc/snmp/snmpd.conf SNMP agent configuration file and perform the following steps:
1
Add the following line to the file:
trapsink IP_address community_name
where IP_address is the IP address of the management station and community_name is the
SNMP community name
2 To enable SNMP configuration changes, restart the SNMP agent by typing:
service snmpd restart
Firewall Configuration on Systems Running Supported Red Hat Enterprise Linux Operating Systems
If you enable firewall security when installing Red Hat Enterprise Linux, the SNMP port on all external
network interfaces is closed by default. To enable SNMP management applications such as IT Assistant
to discover and retrieve information from Server Administrator, the SNMP port on at least one external
network interface must be open. If Server Administrator detects that the SNMP port is not open in the
firewall for any external network interface, Server Administrator displays a warning message and logs a
message to the system log. See "Ports" for additional information.
You can open the SNMP port by disabling the firewall, opening an entire external network interface in
the firewall, or opening the SNMP port for at least one external network interface in the firewall. You can
perform this action before or after Server Administrator is started.
To open the SNMP port using one of the previously described methods, perform the following steps:
1
At the Red Hat Enterprise Linux command prompt, type setup and press <Enter> to start the Text
Mode Setup Utility.
NOTE: This command is available only if you have performed a default installation of the operating system.
The Choose a Tool menu opens.
2 Select Firewall Configuration using the down arrow and press <Enter>.
The
Firewall Configuration screen opens.