Users Guide

Setup and Administration 39
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.
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 appears.
2 Select Firewall Configuration using the down arrow and press <Enter>.
The
Firewall Configuration screen appears.