GM Dealer Infrastructure Guidelines (DIG)

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GM DEALERINFRASTRUCTUREGUIDELINES (DIG)Version 21.1The GM Dealer Infrastructure Guidelines have been designed to outline the dealershiptechnology needed to ensure seamless and reliable dealer data communications anddevelop customers for life through efficient and effective systems and solutions.GM DIG Version 21.1 January 2021

TABLE OF CONTENTS1.Overview and General Notes .2a.Overview .2b.General Notes .22.Dealer Infrastructure .2a.Endpoints .3i.Hardware .3ii.Software .7b.LAN/Wi-Fi .8i.Local Area Network (LAN) .9ii.Wi-Fi . 10c.Transport (Bandwidth) . 13d.Security . 14i.Gateway Security (Firewalls & Unified Threat Management - UTM) . 14ii.Desktop Security . 15iii.Data Security . 17iv.Techline Application Security and Firewall Exceptions . 19e.Disaster Recovery and Business Continuity . 22i.Overview . 22ii.Risk Analysis & Mitigation . 23For questions related to the GM Infrastructure Guidelines, contact GMDIT at 888.337.1010, Prompt 4. For specificService or Parts department PC questions related to Dealership Infrastructure Guidelines, contacthttp://DESdealerservices.com (1.800.GM.TOOLS) or Techline @ 800.828.6860 prompt Service.1 P a g eGM DIG Version 21.1

1. OVERVIEW AND GENERAL NOTESA. OVERVIEWGM has adopted these infrastructure guidelines for the dealership’s internal networkenvironment in accordance with Article 5.6 of the Dealer Sales and Service Agreement.These guidelines are designed to help ensure a seamless and reliable conduit for GM todealer data communications. These guidelines also outline dealership related systems,solutions and technology needed to assist with creating customers for life. GMDealerships, not General Motors LLC, are ultimately responsible for determining theirown network infrastructure, security, and network configuration.B. GENERAL NOTESThe infrastructure guidelines are organized as follows: Good – the minimum acceptable systems capability/components for conductingbusiness with GM Better – the systems infrastructure capability/components that will deliver betterperformance and security while seeking to maximize the lifecycle of the investment. Best – the systems infrastructure capability/components that will deliver bestperformance and security while seeking to maximize the lifecycle of the investment.NOTE: If you are looking to purchase new infrastructure, systems or solutions, pleaseadhere to the specifications outlined in the “Better or Best” sections.2. DEALER INFRASTRUCTUREA dealership’s network infrastructure consists of the Endpoint (hardware and software) resources usedto enable network connectivity, communication, operations, and management of the dealer’s local areanetwork (LAN). Network infrastructure provides the communication path and services between Dealers,service providers, GM, and end customers. Proper selection and implementation of networkinfrastructure are critical to ensuring network efficiency and compatibility with GM, DSP, and dealershipapplications/data.2 P a g eGM DIG Version 21.1

A. ENDPOINTSAny interface/device used to communicate with systems and solutions.I. HARDWAREDealership hardware is a physical device that serves the purpose of capturing dealer data (PCs,laptops, handheld devices), routing that data (routers, switches, firewalls), and providing that datawhen needed (servers, monitors, and peripherals).Selection of network hardware is a critical component of managing a dealership’s network. Whilenew hardware can be a considerable capital expenditure, it is important to understand that thereis also a considerable cost associated with old hardware as it can significantly hinder businessoperations because of speed or compatibility issues, for example.The following section details when to purchase new hardware, guidelines for purchasing, andrecommendations for purchasing desktops, laptops, and routing equipment.Consumer-Grade versus Enterprise-Grade: Most computer Manufacturer’s offer two differentgrades of computers: consumer-grade hardware intended for home and personal use, andenterprise-grade hardware intended for businesses. While the price of consumer-grade hardwaremay seem attractive for dealerships, oftentimes the total cost of ownership ends up being greaterdue to the limited functionality, higher failure rates, and more complex support.GM estimates the life cycle of a Desktop PC, Laptop or Tablet PC on average is three (3) years.SUPPORTEDEnterprise grade hardware (PCs andAccess Points)NOT SUPPORTEDConsumer grade hardware (PC and Access Points),Apple or Mac tablets & PCsNon-branded, built by hand or thin client PCIntel Core i3 / i5 / i7 processors 6thgeneration and aboveALL Intel Core i-series 5th generation and belowProcessors plus AMD, Celeron, Pentium and AtomprocessorsWindows 8.x, XP and Vista BusinessWindows 10 Professional, 64 bitWindows7 Professional, 32 and 64 bitAll Home Operating SystemsTablets running Android or Mac operating systemsJava Run Time Environment 32 bitAll 64 bit versions of Java3 P a g eGM DIG Version 21.1

1. DESKTOP PCGoodBetterIntel Core i3, i5, i7Intel Core i3, i5, i76th & 7th Gen8th Gen8GB16GB16GB**256 GB 500 GB 1TB CD / DVD DriveCD/DVD ComboCD/DVD ComboCD/DVD ComboUSB A 2.0 & 3.02 2 2 20” 1366 x 768 (HD)22” 1920 x 1080 (FHD)24” 1920 x 1080 (FHD)Wired: GigabitWired: Gigabit Wired: Gigabit Wireless: 802.11acWireless: 802.11acWireless: 802.11axWindows 10 Professional, 64 bitWindows 10 Professional, 64 bit3 Year on site3 Year on siteProcessorSystem memory(RAM)Hard Disk Drive(HDD or SSD)DisplayNetwork AdapterOperating SystemWarrantyBest (& Servers)Intel Core i5, i79th Gen* & aboveServer: Intel Dual Core Xeon or betterPC: Windows 10 Professional, 64 bitServer 2012: Std. & Ent. editions3 Year on site* Note: 8th Generation or above have model numbers of 8000 or greater (example: Intel Core i5-8500).** Note: For Service Technicians who perform Infotainment programming the 256GB drive size is not sufficient for largecalibration files. Select from the Better or Best category.When using for EPC (Electronic Parts Catalog): The Free Disk Space requirements above should be referenced when determining if currently owned hardware cansupport local EPC installation. If the web version of the EPC is used, there is a very minimal amount of free diskspace required.US & CanadaHoldenMexicoInternationalSouth AmericaBrasil350 GB200 GB250 GB600 GB250 GB175 GBTo ensure proper function of the GM EPC, internet content filters should be updated to allow *.epclink.com.Note: Hardware that doesn’t meet the “Better” specifications may not be supported by Snap-on upon contractrenewal.Note: Use of any remote connection services, including but not limited to RDP (Windows Terminal Services), VNC,Teamviewer, ShowMyPC, Chrome Remote Desktop, etc. is not authorized or supported for GM EPC users. This alsoincludes running the application on server operating systems in Cloud hosting configurations. The EPC applicationruns on a single physical machine with one concurrent user.4 P a g eGM DIG Version 21.1

For the Techline Service Technician applications (Techline Connect, TIS2Web, GDS2, MDI Manager, MDI / MDI 2, Tech2Win,Data Bus Diagnostics Tool and Service Information): Requires Local Windows Administrative access for software installation and updates to Windows registryRefer to section 2.d.iv and 2.d.v for a list of recommended firewall and security exceptions plus an alternative tofull admin rightsRecommend one (1) laptop for each technician performing service programming and vehicle diagnostics,otherwise, one for every two techniciansRecommends one (1) Multiple Diagnostic Tool (MDI 2) for every Techline PCRecommends one (1) battery maintainer for every two (2) Multiple Diagnostic Interface (MDI) tools in useRecommends use of Tripp-Lite Keyspan USB to Serial adapter (Model: USA - 19HS) for computers without serialports5 P a g eGM DIG Version 21.1

2. LAPTOP & TABLET PC’SGoodBetterBestIntel Core i5, i7ProcessorSystem memory(RAM)Hard Disk Drive(HDD or SSD)CD / DVD Drive(optional/external)USB A 2.0 & 3.0DisplayNetwork AdapterOperating SystemWarrantyIntel Core i3, i5, i7Intel Core i3, i5, i79th Gen* & above6th & 7th Gen8th GenServer: Intel Dual core Xeon orbetter8GB16GB16GB **256 GB 500 GB 750 GB CD/DVD ComboCD/DVD ComboCD/DVD Combo2 2 2 13” 1366 x 768 (HD)15” 1920 x 1080 (FHD)15 ” 1920 x 1080 (FHD)Wired: GigabitWired: Gigabit Wireless: 802.11acWireless: 802.11acWindows 10 Professional, 64 bitWindows 10 Professional, 64 bitWindows 10 Professional, 64 bit3 Year on site3 Year on site3 Year on siteWired: Gigabit Wireless: 802.11ax* Note: 8th Generation or above have model numbers of 8000 or greater (example: Intel Core i5-8269U).** Note: For Service Technicians who perform Infotainment programming the 256GB drive size is not sufficient forlarge calibration files. Select from the Better or Best category.The area of usage should be considered when purchasing laptop or tablet PC. If device will be used in the servicedepartment, a rugged case design should be considered.For the Techline Service Technician applications (Techline Connect, TIS2Web, GDS2, MDI Manager, MDI / MDI 2, Tech2Win,Data Bus Diagnostics Tool and Service Information): Requires Local Windows Administrative access for software installation and updates to Windows registryRefer to section 2.d.iv and 2.d.v for a list of recommended firewall and security exceptions plus an alternative tofull admin rightsRecommends one (1) laptop for each technician performing vehicle diagnostics, otherwise, one for every twotechniciansRecommends one (1) Multiple Diagnostic Tool (MDI 2) for every Techline PCRecommends one (1) battery maintainer for every two (2) Multiple Diagnostic Interface (MDI) tools in useRecommends use of Tripp-Lite Keyspan USB to serial adapter (Model: USA – 19HS) for computers without serialports6 P a g eGM DIG Version 21.1

3. TABLETS & MOBILE DEVICESTablets are handheld devices designed for mobility and accessibility. Tablets don’t have the same functionality as adesktop or laptop machine. Because of this, it is highly recommended that dealerships do not replace desktop orlaptop PCs with tablets, but rather augment with tablets when application and function call for greater mobilityand accessibility.Some GM applications are specifically developed to run on certain tablet devices, such as iPads. When theseapplications are deployed, GM will communicate for which devices those applications are intended to be used.Based on the evolving technology in the mobile space, the compatibility of certain programs may be limited tospecific tablets and/or mobile device operating system version.II. SOFTWARESoftware is the program or operating