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Remote GUI not working

February 19, 2019, 11:35 am
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My ISP is century link with a C1000a modem/router. I used the TCP optimizer hopefully to improve Steam's CSGO gaming. I tried to login into the modem this morning but I could not because the password was incorrect. It was never changed so I called century link and they could not correct and said remote GUI was not working. I checked some windows settings and it is enabled. I reset the optimizer back to windows default but I still can not log in to my modem. I could log in before the optimizer but this was the first time afterwards.
Could the optimizer possibly change anything related? Any other thoughts? Thanks
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Where is the tcp optimizer log file located?

February 25, 2019, 8:44 am
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The documentation does not seem to say...i dont see the log file in the same location as tcp optimizer either...
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Tweaks not setting

March 29, 2019, 3:33 am
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i set the app to "optimal" apply changes..reboot.. open up the app.. and it shows no change.:confused:
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TCP Analyzer & TCP Optimizer BEFORE tweaks from DavidBReed

April 2, 2019, 9:48 am
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« SpeedGuide.net TCP Analyzer Results »
Tested on: 2019.04.02 12:40
IP address: 173.127.xxx.xxx
Client OS/browser: Windows 10 (Chrome 73.0.3683.86)

TCP options string: 020405660103030801010402
MSS: 1382
MTU: 1422
TCP Window: 66304 (not multiple of MSS)
RWIN Scaling: 8 bits (2^8=256)
Unscaled RWIN : 259
Recommended RWINs: 63572, 127144, 254288, 508576, 1017152
BDP limit (200ms): 2652kbps (332KBytes/s)
BDP limit (500ms): 1061kbps (133KBytes/s)
MTU Discovery: ON
TTL: 114
Timestamps: OFF
SACKs: ON
IP ToS: 00100000 (32)
Precedence: 001 (priority)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DSCP (DiffServ): CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

AutoTuningLevelLocal=normal
ScalingHeuristics=disabled
CongestionProvider=ctcp
ReceiveSegmentCoalescing=enabled
ReceiveSideScaling=enabled
Large Send Offload=enabled
Checksum Offload=enabled
MaxConnectionsPer1_0Server=4
MaxConnectionsPer1_0Server=-1
MaxConnectionsPerServer=2
MaxConnectionsPerServer=-1
LocalPriority=499
HostsPriority=500
DnsPriority=2000
NetbtPriority=2001
NonBestEffortLimit=-2
Do not use NLA=1
NetworkThrottlingIndex=-1
SystemResponsiveness=10
Size=2
LargeSystemCache=1
MaxUserPort=-1
TcpTimedWaitDelay=-1
TCPNoDelay=0
DefaultTTL=-1
EcnCapability=disabled
Chimney=disabled
Timestamps=disabled
MaxSynRetransmissions=2
NonSackRttResiliency=disabled
InitialRto(ms)=
MinRto(ms)=
[Ethernet]
MTU=1500
MTU=1500
TcpAckFrequency=-1
TcpDelAckTicks=-1
TCPNoDelay=-1
[Wi-Fi 2]
MTU=0
MTU=0
TcpAckFrequency=-1
TcpDelAckTicks=-1
TCPNoDelay=-1
[Wi-Fi 3]
MTU=1500
MTU=1500
TcpAckFrequency=1
TcpDelAckTicks=0
TCPNoDelay=0
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Windows 10 April 2, 2019—KB4490481 (OS Build 17763.404)

April 4, 2019, 6:29 pm
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This update has indicated that it has:

* Addressed an issue that causes Windows to reuse an expired Dynamic Host Configuration Protocol (DHCP) lease if the lease expired while the OS was shutdown.

If this has not been addressed, is executing the following command would do the trick:

ipconfig /release
ipconfig /renew
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need Help please

April 6, 2019, 12:27 am
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Hello
I have a 10 GB internet connexion (fiber) in Switzerland. With speedtest.net, I have about 1200 mbps download speed
I have win 10 pro, Intel x540-t2 nic with last drivers and run Tcp optimizer with optimal option. I'm wired, with cat7 cable (cat 6a is the same speed)

Somebody may help me to increase the download speed ?

Here is the TCP analyzer report with auto-tuning in normal mode and after in experimental mode. The value of Unscaled RWIN is amazing not ?

Client OS/browser: Windows 10 (Chrome 73.0.3683.86)

TCP options string: 020405b40103030801010402
MSS: 1460
MTU: 1500
TCP Window: 262656 (not multiple of MSS)
RWIN Scaling: 8 bits (2^8=256)
Unscaled RWIN : 1026
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 10506kbps (1313KBytes/s)
BDP limit (500ms): 4202kbps (525KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 11000000 (192)
Precedence: 110 (Internetwork Control)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DSCP (DiffServ): CS6 110000 (48) - class 6 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

and with auto-tuning in experimental mode

Client OS/browser: Windows 10 (Chrome 73.0.3683.86)

TCP options string: 020405b40103030e01010402
MSS: 1460
MTU: 1500
TCP Window: 262144 (not multiple of MSS)
RWIN Scaling: 14 bits (2^14=16384)
Unscaled RWIN : 16
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 10486kbps (1311KBytes/s)
BDP limit (500ms): 4194kbps (524KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 11000000 (192)
Precedence: 110 (Internetwork Control)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DSCP (DiffServ): CS6 110000 (48) - class 6 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

Best regards
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VPN: Imac vs PC

April 13, 2019, 2:52 am
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Hi Philip:

This case has baffled me for more than 12 months. I have an Imac with the latest OS and a PC with Windows 10 Pro. My ISP offers the ff Fibr Speed:
5, 15, 25 and 50 Mbps. I have subscribed to the latter, 50Mbps.

When I'm connected to VPN using my Imac, I get speeds up to my subscription, 50Mbps. However, when using my PC my speed sometimes goes to the other fiber plan. I get 5, 15 or 25 Mbps from time to time. What I do right now is to disconnect then connect to other VPN servers until such time I get the right speed.

This problem doesn't happen to my Imac. I really need to pick your brain on this. It's driving me crazy. I followed the tips and tweaks that you have offered

Mark
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Best Settings for low Latency(FPS Games)

April 22, 2019, 1:47 am
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Hello

I have the problem, that i get bad hit registration on cs go.
I have all Settings set up, as the gaming tweak says.
The only settings i am not sure is, if i should enable ecn capability and which buffer sice should i put in the nic.

Shoul i enable Priority and Vlan in the NIC Settings because on my asus router i have an custom script that usese qos with fq_codel and also limit bandaith on 95% for perfect bufferbloat.

Do you know any other "gaming" tweaks for low latency and good hit registration?
I sometimes stream and for me it feels that it is getting much worse with it.

My Setup:

I7 6700k
16gb 3000 mhz ddr4 corsair
Gtx980 asus strix
asus pro gaming z170

Router AC-RT5300
And moden, the default gigabyte modem from my
Internet provider(singel user modus)
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TcpWindowSize is limited

May 2, 2019, 12:33 pm
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(Sorry for my bad English)
Hello!

My TcpWindowSize in registry is 496400.
I downloaded a WireShark to make sure that all okey.
And i noticed that my TcpWindowSize is 262144
Help me, what`s wrong?:confused:
Windows 10, WindowsScalingOption=256
P.S And TcpAnalyzer say the same
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Why not set autotuninglevel=experimental

May 23, 2019, 9:25 am
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Hello as I understand autotuninglevel is limits the max. TcpWindowSize
But why not set autotuninglevel=experimental?
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Poor Speeds from NZ to US in Windows

May 25, 2019, 3:16 am
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Hey guys,

I have a tricky issue and I need the help of your networking expertise!


Problem:
I am located in New Zealand and get virtually full line speed to the US (west coast) when running Linux.

However, with all the same hardware etc, I get relatively poor speeds under Windows 10.

I have seen reports on the net about others with similar issues, but I have yet to see anyone come up with a working solution.


Details:

Advertised Speed:
930/550Mbps (DS/US) Fibre connection

Performance (iPerf3, 10 threads):
LAN - 930/930Mbps
Auckland (2ms) - 930/530Mbps
Sydney (25ms) - 900/500Mbps
Los Angeles (125ms) - 450/150Mbps (900/500Mbps under Linux)

Current Settings:
Client OS/browser: Windows 10 (Firefox 66.0)

TCP options string: 020405b40103030801010402
MSS: 1460
MTU: 1500
TCP Window: 262656 (not multiple of MSS)
RWIN Scaling: 8 bits (2^8=256)
Unscaled RWIN : 1026
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 10506kbps (1313KBytes/s)
BDP limit (500ms): 4202kbps (525KBytes/s)
MTU Discovery: ON
TTL: 52
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)


Router / Firewall:
Sophos SG 135 (UTM v9.602-3)

OS:
Windows 10 Pro v1809

LAN connection:
1Gbit wired

Additional Testing / Diagnosis:
- Tested with different PCs (also Windows 10) - no change
- Updated network card drivers - no change
- Tested to different iPerf3 servers - no change
- CPU utilization is nominal on all test PCs
- Checked / changed anything which looked relevant on the tweaks page (https://www.speedguide.net/articles/...ip-tweaks-5077)
- I have fully eliminated all local LAN network equipment & cabling, including the router / firewall.


Questions:
- Is there any way to monitor the current TCP Window size in real time as it scales?


Any input / ideas / hail Marys gratefully accepted!
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WSH in Windows 10?

May 28, 2019, 6:24 am
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Hi!
I recently noticed in gpedit.msc in TCP parameters a parameter that which was named "Set the state of Windows heuristics" (something like that, I just have Russian parameter translate)
And when i disabled it, in Tcpip\Parameters in registry appeared new parameter, called "EnableWsd".
When i use netsh to disable wsh, this parameter didn`t appear
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Windows 10 1903

May 30, 2019, 5:14 am
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I just made a clean install of Windows 10 1903.

I noticed now that my network adapter has a new entry "bridge driver". What does thing do?
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Can I change the parameters that`s only for reading?

May 30, 2019, 8:23 am
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Hi!
I know that in Windows 10 Home/Pro i can`t change some parameters in [netsh] tcp supplemental or [powershell] Get-NetTCPSetting
Can I change the parameters that`s only for reading?
I want to change the icw, DelayedAckTimeout(It`s TcpAckDelTcisk, isn`t it?), DelayedAckFrequency(it`s TcpAckFrequency, isn`t it?)
I remember that you said something about this here - https://www.speedguide.net/articles/...es-to-tcp-6266
But i didn`t understand
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registry settings

June 3, 2019, 4:24 am
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Sorry for my English

what registry settings are suitable for normal gaming response

« SpeedGuide.net TCP Analyzer Results »
Tested on: 2019.06.03 07:19
IP address: 62.182.xxx.xx
Client OS/browser: Windows 7 (Chrome 74.0.3729.169)

TCP options string: 020405ac0103030801010402
MSS: 1452
MTU: 1492
TCP Window: 66560 (not multiple of MSS)
RWIN Scaling: 8 bits (2^8=256)
Unscaled RWIN : 260
Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
BDP limit (200ms): 2662kbps (333KBytes/s)
BDP limit (500ms): 1065kbps (133KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
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TcpWindowSize and TcpAckFrequency

June 5, 2019, 4:57 am
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Hi!
I recently think about TcpWindowSize and TcpAckFrequency
TcpAckFrequency value determines Ack sending frequency
By default, tcp send ack every two packets
But how does it work with TcpWindowSize?
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TCP optimiser causing issues with PIA VPN

July 6, 2019, 11:17 pm
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Hi,
Every time I use optimal settings my PIA vpn constantly hangs on connecting. Any reason on what could cause this?
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NSI Keys

July 16, 2019, 7:13 pm
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I recently saw some tweaks for windows 10 using the following keys and a lot more

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nsi\{eb004a00-9b1a-11d4-9123-0050047759bc}\7]

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nsi\{eb004a00-9b1a-11d4-9123-0050047759bc}\6]

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nsi\{eb004a03-9b1a-11d4-9123-0050047759bc}\1]

Does anyone know the function of any of them?
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DefaultTTL And UDP

July 18, 2019, 9:13 pm
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I have identified a command to change UDP ports (same as maxuserport) is this recommended? netsh int ipv4 set dynamicport udp start=1025 num=64511


about DefaultTTL why the value 64 is more recommended than the maximum (255)
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How to optimize optical fiber network with TCP Optmiizer for Counter Strike 1.6

August 15, 2019, 8:46 am
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This is my speedtest.net results:
Ping 6
Download 58mbps
Upload 28mbps
Windows 10
[netsh]
This is me exported TCP Optmizer settings. I don't change anything with tcp optmizer yet
AutoTuningLevelLocal=3
ScalingHeuristics=2
CongestionProvider=5
ReceiveSegmentCoalescing=1
ReceiveSideScaling=1
Large Send Offload=1
Checksum Offload=1
EcnCapability=2
Chimney=2
Timestamps=2
MaxSynRetransmissions=3
NonSackRttResiliency=2
InitialRto(ms)=1000
MinRto(ms)=300
[SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPER1_0SERVER]
explorer.exe=4
iexplore.exe=-1
[SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPERSERVER]
explorer.exe=2
iexplore.exe=-1
[SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider]
LocalPriority=499
HostsPriority=500
DnsPriority=2000
NetbtPriority=2001
[SOFTWARE\Policies\Microsoft\Windows\Psched]
NonBestEffortLimit=50
[System\CurrentControlSet\Services\Tcpip\QoS]
Do not use NLA=-2
Do not use NLA_SEL=0
[SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile]
NetworkThrottlingIndex=10
NetworkThrottlingIndex_SEL=10
SystemResponsiveness=20
SystemResponsiveness_SEL=20
[SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters]
Size=-1
Size_SEL=0
[SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
LargeSystemCache=0
LargeSystemCache_SEL=0
[SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
MaxUserPort=-1
TcpTimedWaitDelay=-1
DefaultTTL=64
[SOFTWARE\Microsoft\MSMQ\Parameters]
TCPNoDelay=-2
TCPNoDelay_SEL=0
[Ethernet]
MTU=1492
[SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{9B69ED7D-366A-4D37-B59D-AE848E665647}]
TcpAckFrequency=-1
TcpAckFrequency_SEL=0
TcpDelAckTicks=-1
TcpDelAckTicks_SEL=0
TCPNoDelay=-1
TCPNoDelay_SEL=0
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