I am running the latest version of ERA (version 6.5.31.0)
Following MartinK suggestions I changed a line in the file
/var/opt/eset/RemoteAdministrator/Server/Scripts/UnixWindowsNetworkRemoteInstall.sh
Specifically the line
LANG= mount -t cifs -o "${mount_domain_option}username=$ERA_RD_WN_USERNAME" "$remote_cifs_share" "$local_cifs_mount"
becomes
LANG= mount -t cifs -o "${mount_domain_option}username=$ERA_RD_WN_USERNAME,vers=2.0" "$remote_cifs_share" "$local_cifs_mount"
After that i run the command
/sbin/restorecon -F -R -v /var/opt/eset/RemoteAdministrator/Server
and I tried to deploy the agent to one of the Windows 7 machines.
This workaround worked for me and I wish that a change will be made to the ERA webconsole interface, so that a user can tell that a windows computer has SMB version 2, before the agent can be installed remotely.
Thank you very much for the help.