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How do I set up multiple mirrors for distributing updates on my network? (5.x)


  • Set up more than one update mirror to distribute updates across a large network

A new version has been released

Version 6 of ESET Remote Administrator (ERA) and ESET business products were released in North America December 11th, 2014, and globally February 25th, 2015. This article applies to version 5.x and earlier ESET business products. For information about what's new in the latest version and how to upgrade, see the following article:


The method covered in this article involves creating multiple update mirrors. The Mirror feature is used to create a local update server so that client workstations will download virus signature updates from a local Mirror server on the network instead of downloading them directly from ESET’s servers on the Internet. This method can help to save Internet bandwidth and to minimize network traffic, since only the mirror server connects to the Internet for updates rather than hundreds of client machines.

The other method, replication, is used in large networks where multiple ESET Remote Administrator Servers are installed (for example, in a company with several branches).





Instructions for an alternate method of distributing updates to client workstations over large networks, “Replication”, can be found here.


When performing the steps below, make sure that the appropriate port is open between locations or subnets. If your "lower mirrors" are in a different location or subnet, make sure that port 2221 is open between your "upper mirror" and "lower mirrors".

  1. Install ESET Remote Administrator on each machine that will be used as an update mirror. For step-by-step instructions, see the following Knowledgebase article: To configure a client workstation to serve as an update mirror, see the following Knowledgebase article:

  2. Configure desired client workstations to point to a given update mirror:
  3. Point each update mirror to a single ESET Remote Administrator Console:|
    1. In the ESET Remote Administrator Console, click Tools Server Options.
    2. Click the Updates tab.
    3. Select <User defined update server> from the Update server drop-down menu and enter in the address of the ESET Remote Administrator Server you'd like this Console to point at, in the following format:


      where servername is replaced by the name/IP address of the server you are pointing to.
    4. Click OK.
    5. Repeat steps 1-4 on each machine that you've configured to act as an update mirror.