Found inside Page 218To find definitions for all the various Registry keys, you can use the Registry Tools utility in the Windows Server 2008 Resource Kit and access To create and enable a roaming profile for a specific user, follow these steps: 1. There program is available in our downloads section. Found insideUsing Advanced Sharing Settings to Share a Folder Outside Your File Library The following steps show you how to share files from outside your library with To enable administrative shares, you have to make this registry change. Found inside Page 189Enabling Roaming Profiles is actually very easy. First you create a network file share to store the roaming user profiles and permissions, as documented at http:// technet.microsoft.com/en-us/library/cc757013(v=WS.10).aspx. Default: enabled Recommended: enabled (provided you have 2 or more processor cores and a NIC that can handle RSS), Get-NetOffloadGlobalSetting (view global setting) Get-NetAdapterRss -Name * (use cmdlet to view RSS capable Network Adapters) netsh int tcp show global, Enable-NetAdapterRss -Name * (use this to enable RSS for all adapters that support it) Disable-NetAdapterRss -Name * (use this to disables RSS for all adapters)Set-NetOffloadGlobalSetting -ReceiveSideScaling Enabled (alternate global command for all adapters). See this nice attempt to set MTU using PowerShell at Serverfault. First look at Nexland Pro 400 ADSL with Wireless, Bits, Bytes and Bandwidth Reference Guide, Ethernet auto-sensing and auto-negotiation, How to set a Wireless Router as an Access Point, The TCP Window, Latency, and the Bandwidth Delay product, How To Crack WEP and WPA Wireless Networks, How to Stop Denial of Service (DoS) Attacks, IRDP Security Vulnerability in Windows 9x. To implement this tweak and disable Nagle's algorithm, modify the following registry keys. In Windows 8 (and 2012 Server): Automatic, Internet, Datacenter, Compat In Windows 8.1 (also Windows 10, Windows 2012 Server R2): Automatic, Internet, InternetCustom, Datacenter, DataCenterCustom, Compat. Adding the reg entries fixes the problem. Found inside Page 149BandwidthLevel does not appear the Registry until you enable the Bandwidth Throttler . Warning To add or modify a Registry value entry , use administrative tools such as Control Panel or System Policy Editor whenever possible . Under this {NIC-id} key, create a new DWORD value:TcpAckFrequency=1 (DWORD value, not present by default interpreted as 2, 1=disable, 2=default, specifies number of outstanding ACKs before ignoring delayed ACK timer). Chimney Offload does not work together with NetDMA (mute point with Windows 8/8.1 as NetDMA is not supported). Jan 13, 2016 at 09:44 UTC This book will help you face the complexity of real world hardware and software systems and the unpredictability of user behavior, so you can get to the heart of the problem and set it right. It's been tested on Windows 10 Home as well. However, under heavy network load it may be necessary to adjust these two registry settings to increase port availability and decrease the time to wait before reclaiming unused ports. Save file with .reg extension, for example: "enable-ctcp.reg" 3. Alternatively, you can specify only a single network adapter and/or protocol by using command-line switches. Direct Cache Access (DCA) allows a capable I/O device, such as a network controller, to deliver data directly into a CPU cache. If you ever change ip addresses, you are setting yourself up for a fall. This feature is still being rolled out. You can still "hack" Windows 8 to change to CTCP in netsh by doing the following: 1. Well explore this topic under the methods outlined below in this section: if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-thewindowsclub_com-medrectangle-4-0')};Lets take a look at the description of the step-by-step process in relation to each of the methods. From one, I can connect to the c$ administrative share, but trying to connect from the other to the first computer's c$ share fails. Apply all settings and close gpedit. These allow access to the root disks remotely. Some of the settings we've tested are the same/similar parameters as with previous Windows versions that we have confirmed to work with Windows 8/8.1 as well, although they may have different default values. On another note, im looking into getting it to work for several machines without having to manually do it on each machine. A lot of discussion online of this comes from group policies, though i don't think that would be the cause, as group polices are not really used by one server, however this may be some basic policy that's there by default. InfoWorld - Nov 13, 1995 - Page 114 You can also just copy all the text to the appropriate registry hive directly. recommended: 16384 to 65534 decimal as necessary) - maximum number of ports to use. See:MSDN ms737757 Technet MaxUserPort. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfileSystemResponsiveness=10 (DWORD, default is 20 denoting 20% of CPU reserved, recommended: decimal 10, or 0 for pure gaming/multimedia performance). The only downside is that it can possibly cause some bufferbloat in large BDP networks (like the Internet) with unmanaged queues, such as ADSL and LTE. This setting defines the grouping of network packets in general, to limit the number of receive interrupt and reduce the amount of required processing. If your login script is not running from the Sysvol / Netlogon directory, then you are able to change the settings for multiple computers and remove it after a certain ammount of time. It also ensures that its behavior does not impact other TCP connections negatively. The SG TCP Optimizer is a standalone application that does not require installation, you can just save it to the desktop, right-click -> choose "Run as administrator", and apply the "optimal" settings, or customize them to your liking. Found inside Page 125Practice 10 : In the Recovery Console , type help to see a list of commands . Type the name of each command followed by Practice 11 : Restore the registry from a recent backup stored in the % systemroot % \ Repair \ Regback folder . We recommend using the PowerShell for changes. Where "network interface name" is your specific network adapter name as obtained above (also viewable under Network adapters), and mtu=#### is the desired MTU value. Notes Some templates/settings, as well as changing the default NetTransportFilter are no longer editable in client Windows versions (Windows 8, 8.1), only Server variants (Server 2008, Server 2012/2012 R2). Nagle's algorithm is designed to allow several small packets to be combined together into a single, larger packet for more efficient transmissions. You should always refer to netlogon and sysvol as \\domain\sysvol and \\domain\netlogon these are domain services. Windows Group Policy Troubleshooting: A Best Practice Guide In the same location, add a new DWORD value:TCPNoDelay=1 (DWORD value, not present by default, 0 to enable Nagle's algorithm, 1 to disable). TheWindowsClub covers Windows 11, Windows 10 tips, tutorials, how-to's, features, freeware. Windows Server 2008 For Dummies - Page 218 Hardening Windows Systems - Page 351 Open notepad and copy this code into it: 2. can you tell me where to go to disable that chimmeny offload in my registry of windows 10 and what would the dword value be? Because of the issues mentioned above, we recommend disabling LSO at both the Network Adapter properties, and at the OS level with the setting below. Receive Segment Coalescing (RCS) is able to collect packets that are received during the same interrupt cycle and put them together so that they can be more efficiently delivered to the network stack. To set using Powershell cmdlets (only available in server variants): Set-NetTCPSetting -SettingName InternetCustom -InitialCongestionWindow 10, netsh int tcp set supplemental template=custom icw=10, (works for Server 2008 R2 with hotfix KB2472264). To change using PowerShell cmdlet (does not work in some older Windows builds): Set-NetTCPSetting -SettingName InternetCustom -CongestionProvider CTCP, ("InternetCustom" template is for Windows 8.1 and 10, "Custom" for Windows 8, "Internet" for newer Windows builds since "Creators Update". Microsoft Windows Vista Unleashed - Page 300 This worked, simply going into the local group policy editor solved it, but as Darren has pointed out, it will work manually but it will be a problem for a whole network of pc's. The receive-side scaling setting enables parallelized processing of received packets on multiple processors, while avoiding packet reordering. Found inside Page 83Registry Tuning Articles and Information for System Security Article Reference Description Q101063, 3, Q245517 Disable administrative shares 1, 2, 3 Disable the OS/2 subsystem 1, 2, 3 Disable the POSIX subsystem Note: 1 Windows NT HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPER1_0SERVER\explorer.exe=10 (DWORD, default: 4, recommended: 8, valid range: 2-128)FEATURE_MAXCONNECTIONSPERSERVER\explorer.exe=10 (DWORD, default: 2, recommended: 8, valid range: 2-128), In addition to explorer.exe, you can also add a 32bit DWORD "iexplore.exe" (according to MSDN), and set it to the same corresponding value as "explorer.exe"FEATURE_MAXCONNECTIONSPER1_0SERVER\iexplore.exe=10 (DWORD, not present by default, recommended: 8, valid range: 2-128)FEATURE_MAXCONNECTIONSPERSERVER\iexplore.exe=10 (DWORD, not present by default, recommended: 8, valid range: 2-128), For more information, see our Web Browser Tweaks article. Notes:Needs Checksum Offload to be enabled. There are two related registry settings: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory ManagementLargeSystemCache=1 (DWORD, default value: 0, recommended value: 1 for LAN file transfers, 0 for gaming) A value of zero establishes a cache of ~8 MB, a value of 1 allows the cache to expand up to the amount of physical memory minus 4 MB, as necessary. To disable using PowerShell cmdlets for a single adapter: Disable-NetAdapterRsc -Name * (use to disable RSC for all adapters) Enable-NetAdapterRsc -Name * (use to enables RSC for all adapters that support it)Set-NetOffloadGlobalSetting -ReceiveSegmentCoalescing Disabled (alternate syntax for globally changing all adapters). The issue: Adminstrative shares are default shares of all the disk drives on a Windows computer. In network adapters using Network Driver Interface Specification (NDIS) versions 6.3 and later, packet coalescing is used to group both random and multicast traffic for efficiency. With earlier Windows versions, we used the netsh command in elevated command prompt to tweak most of the TCP/IP settings. The PowerShell Enable-NEtAdapterChecksumOffload cmdlet enables checksum offloads on the network adapter. We recommend reducing the reserved CPU for background processes from the default of 20%. Microsoft Encyclopedia of Networking - Page 119 But making changes to the Windows using gpedit is easier because of the simpler interface presented by the GUI. More detailed information about all available options is provided in the TCP Optimizer documentation, answers to frequently asked questions are available in the Optimizer FAQ, and personalized help is available through our forums. (ISC)2 SSCP Systems Security Certified Practitioner Official To avoid those errors, you need to change the way Windows allocates memory for network services and file sharing. If you are not experience the symptoms regarding group policies, then I would not implement whatDarren has suggested, as the link he posted it may well have been solved by MS between September and now via updates.
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