Specify if Security Agents identify the
server computer by its fully qualified domain name (FQDN), host (domain) name or IP
address.
Communication between the server computer and Security Agents is dependent
on the specified IP address. Changing the IP address results in Security Agents not being
able to communicate with the Trend Micro Apex One
server. The only way to restore communication is to redeploy all the Security Agents. The same
situation applies if the server computer is identified by a host name that changes.
In most networks, the server computer’s IP address is more likely to change
than its host name, thus it is usually preferable to identify the server computer
by a host
name.
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TipFor administrators using the IP address instead of the host name, Trend Micro does not recommend changing
the IP address (obtained from the DHCP server) after the installation.
Administrators can avoid further communication issues with Security Agents by setting the IP address configuration to
Static (on the DHCP server) using the same IP address information obtained from the
DHCP server.
Another way to preserve the IP address configuration is to reserve the IP address
for the Trend Micro Apex One server only.
This forces the DHCP server to assign Trend Micro Apex One the same IP address even when DHCP-enabled.
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When using static IP addresses, identify the server by its IP address.
In addition, if the server computer has multiple network interface cards (NICs), consider
using
one of the IP addresses instead of the host name to ensure successful agent-server
communication.