Every On Center Software Classic product requires communication via the Internet to activate licenses. Clients must configure their networks appropriately or activation will fail. Communication is initiated from the client software (OST, QB, ELM, etc.) to the Internet resource via the TCP protocol. Our software solutions never initiate communications from the Internet resource into the clients internal network.
It is not possible to license Classic products without an Internet connection or through proxies.
The services provided by these Internet resources include:
- Local Software License Activation and Validation
- Networked Software License Activation and Validation
- Product Support Information (Software Updates)
- Quick Bid e-Quotes, Supplier Lists, Partner databases and assemblies
- On-Screen Takeoff Project Express
Access to these Internet resources may require you to modify your network (including software and hardware) firewall. Our solutions are build for enterprise systems by only requiring outbound TCP access (the firewall handles the incoming response). This minimizes security risks and should meet most IT security requirements.
Some organization employ several layers of firewalls that can potentially block communication to or from a workstation or the server on which Enterprise License Server is installed, preventing licensing or features to work. The list below is not all-inclusive but should give you an idea of where to check for firewalls that could be causing issues:
- Windows Server OS Firewall
- Windows Client Desktop Firewall
- Virtual Server OS Firewall
- 3rd Party Firewall/Filters Applications local to the Server
- 3rd Party Firewall/Filters Applications local to the Client
- Any Physical Hardware based Network Appliances/VPN/DMZ or Network Filters that can permit/refuse traffic or add latency to the connection
You must ensure that your company's are configured to allow the TCP traffic as described in this FAQ. For assistance with configuring your firewalls and network appliances, please contact the vendor of your particular firewall product. On Center Software is unable to assist with installing or configuring products we do not manufacture or sell.
On Center does not provide specific instructions on how to set up or modify firewalls because there is a multitude of firewall solutions on the market and each is set up differently. On Center provides the following information so that clients can configure their own firewall solutions or to forward to a qualified IT professional for implementation.
The tables below include all the firewall configuration information required to run On Center Software solutions.
Do not configure firewalls to a specific IP address, use the DNS Name only.
Using a Local activation code (a Stand-alone license)
When licensing the software using a stand-alone, individual activation code on the "Local" tab, the following configuration is required.
DNS Name |
Port Number |
Purpose |
titan.oncenter.com |
8888 * |
Activating License Code
You must enable "port forwarding" for "TCP" in your router(s) for Port 8888. * |
eve.oncenter.com |
80 |
Validating License Fulfillment |
as1.oncenter.com |
80 |
Checking for Updates |
www.oncenter.com |
80 |
Support, Feature Requests, User Guides |
equotes.oncenter.com |
80 |
Sending eQuotes (receipt is handled through e-mail) |
projectexpress.oncenter.com |
443 |
Sending/Receiving projects through Project Express |
*example of an router configuration entry showing port forwarding for Port 8888:

On Center cannot give you specific instructions for adding an entry to your router because each router's configuration process is different. This gives you an idea of what you need to enter.
Exceptions
The following executables must be added as exceptions to local and network firewalls:
On-Screen Takeoff® and Digital Production Control™
ost.exe (installed to C:\Program Files (or Program Files (x86) on 64 bit machines)\On-Screen Takeoff 3\
fnplicensingservice.exe (installed to: C:\Program Files (or Program Files (x86) on 64 bit machines)\Common Files\Macrovision Shared\FLEXnet Publisher\)
Quick Bid®
quickbid.exe (installed to C:\Program Files (or Program Files (x86) on 64 bit machines)\Quick Bid 4\
fnplicensingservice.exe (installed to: C:\Program Files (or Program Files (x86) on 64 bit machines)\Common Files\Macrovision Shared\FLEXnet Publisher\)
Using a Network license (floating or borrowed)
When licensing the software (On-Screen Takeoff, Digital Production Control, or Quick Bid) to Enterprise License Manager, the following configuration is required.
DNS Name |
Port Number |
Purpose |
eve.oncenter.com |
80 |
Validating network license to OCS Licensing Servers (each use) |
as1.oncenter.com |
80 |
Checking for Updates |
www.oncenter.com |
80 |
Support, Feature Requests, User Guides |
equotes.oncenter.com |
80 |
Sending eQuotes (receipt is handled through e-mail) |
projectexpress.oncenter.com |
443 |
Sending/Receiving projects through Project Express |
Exceptions
The following executables must be added as exceptions to local and network firewalls:
On-Screen Takeoff® and Digital Production Control™
ost.exe (installed to C:\Program Files (or Program Files (x86) on 64 bit machines)\On-Screen Takeoff 3\
fnplicensingservice.exe (installed to: C:\Program Files (or Program Files (x86) on 64 bit machines)\Common Files\Macrovision Shared\FLEXnet Publisher\)
Quick Bid®
quickbid.exe (installed to C:\Program Files (or Program Files (x86) on 64 bit machines)\Quick Bid 4\
fnplicensingservice.exe (installed to: C:\Program Files (or Program Files (x86) on 64 bit machines)\Common Files\Macrovision Shared\FLEXnet Publisher\)
Activating Enterprise License Manager for Classic Products
To activate network licenses in the Enterprise License Manager activation utility, the following configuration is required:
DNS Name |
Port Number |
apollo.oncenter.com |
80 |
Exceptions
The following executables must be excepted (omit the " (x86)" on 32 bit servers):
- "C:\Program Files (x86)\FlexNet Publisher License Server Manager\lmadmin.exe" (inbound and outbound, all ports)
- C:\Program Files (x86)\On Center Software\Enterprise License Manager\oncenter.exe (vendor daemon - inbound and outbound, all ports)
- C:\Program Files (x86)\On Center Software\Enterprise License Manager\oncenter\ocslmtrans.exe (transport utility)
- C:\Program Files (x86)\On Center Software\Enterprise License Manager\oncenter\ServerActivationUtility.exe (the process that sends activation codes to On Center for validation/activation)
When using ELM-Virtual Server Edition, you must also configure any host/guest firewalls to allow communication between the host and guest servers over the port on which LMBind is running - see the ELM-Virtual Server Edition User Guide for details.