@echo off

rem reset winsock:
netsh winsock reset
rem reset ip/dhcp:
netsh int ip reset
rem reset tcp params:
netsh int tcp reset

rem Get the status of these tcp => netsh int tcp show global
netsh interface tcp set global rss=enabled chimney=automatic netdma=disabled dca=disabled autotuninglevel=normal
netsh interface tcp set global congestionprovider=none ecncapability=disabled timestamps=disabled

netsh interface tcp set heuristics enabled
netsh interface tcp set heuristics wsh=enabled

rem  Large Scale Offload (LSO) is buggy on a lot of NIC's. You can disable it with these commands
netsh interface tcp set global chimney=disabled

rem Other ip releated settings => netsh int ip show global
netsh interface ip set global neighborcachelimit=4096
netsh interface ip set global defaultcurhoplimit=64
netsh interface ip set global taskoffload=enabled mediasenseeventlog=disabled

rem [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters]
rem "AllowUnqualifiedQuery"=dword:00000001              # allow DNS query without domain name
rem "DefaultTTL"=dword:00000040                         # 64 hops
rem "DisableMediaSenseEventLog"=dword:00000001          # no entry in eventlog of cable (dis-)connect
rem "DisableRss"=dword:00000000                         # disable Receiver Side Scaling tcp windows
rem "DisableTaskOffload"=dword:00000000                 # disable task offloading to nic
rem "DisableTcpChimneyOffload"=dword:00000000           # disable chimney offload
rem "DnsOutstandingQueriesCount"=dword:000003e8         #
rem "DnsQueryTimeouts"=REG_MULTI_SZ:"1 1 2 2 4 0"       # don't wat too long for DNS server response
rem "EnableAddrMaskReply"=dword:00000000                # dont reply to subnet pings
rem "EnableBcastArpReply"=dword:00000000                # dont reply to arp broadcast requests
rem "EnableConnectionRateLimiting"=dword:00000000       # bypass the limitation on half open tcp
rem "EnableDca"=dword:00000000                          # enable Direct Cache Access from nic to cpu
rem "EnableHeuristics"=dword:00000001                   # let windows tcp find optimum, works with Chimney offload
rem "EnableIPAutoConfigurationLimits"=dword:00000000    # no auto ip from microsoft
rem "EnableTCPA"=dword:00000000                         # enable Net DMA
rem "EnableWsd"=dword:00000000                          # enable Windows Scaling Diagnostics, choppy flash video if enable!!!
rem "IPEnableRouter"=dword:00000000                     # don't discover routers
rem "QualifyingDestinationThreshold"=dword:ffffffff     # QOS no threshold
rem "StrictTimeWaitSeqCheck"=dword:00000001             # does activate TcpTimedWaitDelay (only from win8+?)
rem "SynAttackProtect"=dword:00000001                   # protect against syn flood (DOS) attacks
rem "Tcp1323Opts"=dword:00000001                        # windows scaling (1) and timestamps (2)
rem "TCPMaxDataRetransmissions"=dword:00000002          # limit the max nr of data retransmissions
rem "TcpTimedWaitDelay"=dword:0000001e                  # wait 30 secs before closing inactive connection (StrictTimeWaitSeqCheck 1)

reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v AllowUnqualifiedQuery /d 1 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v DisableMediaSenseEventLog /d 1 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v DisableRss /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v DisableTaskOffload /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v DisableTcpChimneyOffload /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v DnsOutstandingQueriesCount /d 1000 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v DnsQueryTimeouts /d "1 1 2 2 4 0" /t REG_MULTI_SZ  /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableAddrMaskReply /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableBcastArpReply /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableConnectionRateLimiting /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableDca /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableHeuristics /d 1 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableIPAutoConfigurationLimits /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableTCPA /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v EnableWsd /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v IPEnableRouter /d 0 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v QualifyingDestinationThreshold /d "0xffffffff" /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v StrictTimeWaitSeqCheck /d 1 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v SynAttackProtect /d 1 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v Tcp1323Opts /d 1 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v TCPMaxDataRetransmissions /d 2 /t REG_DWORD /f
reg add HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters /v TcpTimedWaitDelay /d "0x0000001e" /t REG_DWORD /f


rem [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters\Interfaces\<UID>]
rem "TcpAckFrequency"=dword:00000001                    # def 2 outstanding ACKS. Use 5 for 100Mbit, 13 for 1Gbit network connection (1 beats timeouts Outlook)
rem "TcpDelAckTicks"=dword:00000000                     # Disable Nagling

rem [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\NDIS\Parameters]
rem "RssBaseCpu"=dword:00000001                         #
rem "MaxNumRssCpus"=dword:00000002                      # (4)  (2=server, 1=workstation) Receive Side Scaling to one CPU (all cores)

rem [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters]
rem "FastCopyReceiveThreshold"=dword:000005dc           # UDP streaming threshold 1500 bytes/s
rem "FastSendDatagramThreshold"=dword:000005dc          # UDP streaming threshold 1500 bytes/s

rem Other settings affecting copying files with explorer over tcpip:

reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v CopyBufferSize /d 65536 /t REG_DWORD /f

rem [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
rem "CopyBufferSize"=dword:00010000                     # x2000-x100000 else x40000 (64 KB)

reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\System /v CopyFileBufferedSynchronousIo /d 1 /t REG_DWORD /f
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\System /v CopyFileChunkSize /d "0x00004000" /t REG_DWORD /f
reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\System /v CopyFileOverlappedCount /d "0x10" /t REG_DWORD /f

rem [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System]
rem "CopyFileBufferedSynchronousIo"=dword:00000001      # do it synchronous
rem "CopyFileChunkSize"=dword:00004000                  # copy 16KB blocks
rem "CopyFileOverlappedCount"=dword:00000010            #  ?, 16 (0x10) works best