. ERA client/server architecture
Technically, ESET Remote Administrator consists of two separate components: ERA Server ERAS and ERA Console
ERAC. You can run an unlimited number of ERA Servers and clients on your network as there are no limitations in
the license agreement for their use. The only limitation is the total number of clients your installation of ERA can
administer see section .. , “License keys”.
. ERA Server ERAS
The server component of ERA runs as a service under the following Microsoft Windows NTbased operating
systems: NT, , XP, and Vista. The main task of this service is to collect information from clients and to
send various requests to them. These requests, including configuration tasks, remote installation requests, etc., are
created through the ERA Console ERAC.
ERAS is a meeting point between ERAC and client computers a place where all information is processed,
maintained or modified before being transferred to clients or to ERAC.
.. Requirements
ERAS requires a Microsoft Windows NTbased operating system NT, , XP, , Vista. The Microsoft
Windows Server Edition is not necessary for ERAS to work. A computer with ERAS should be always online and
accessible via computer network by:
• Clients(usuallyworkstations)
• PCwithERAConsole
• OtherinstancesofERAS(ifreplicated)
The chart below lists the possible network communications used when ERAS is installed. The process era.exe listens
on TCP ports , , and . Other communications occur using native operating system processes for
example “NetBIOS over TCP/IP”.
Protocol Port Description
TCP ERAS listening
Communication between clients
and ERAS
TCP ERAS listening
Communication between ERAC and
ERAS
TCP ERAS listening
By default, this port oers
update packages using the Mirror
feature integrated in ERAS HTTP
communication
If using all features of the program, the following network ports need to be open:
Protocol Port Description
TCP ERAS listening
Communication between the agent
einstaller.exe and ERAS during
remote install
TCP ERAS listening ERAS replication
TCP
target port from the point of
view of ERAS
Copying of the agent einstaller.
exe from ERAS to a client using the
share admin during push install
UDP
target port from the point of
view of ERAS
“Name resolving” during remote
install
UDP
target port from the point of
view of ERAS
“Browsing“ during remote install
TCP
target port from the point of
view of ERAS
Direct access to shared resources
using TCP/IP during remote install
an alternative to TCP
The minimum hardware configuration for the deployment of ERAS is also the minimum recommended
configuration for the Microsoft Windows operating system used on the machine.
(20 paginas)
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