不好意思..大大
我查了MS的TechNet中
他的結果在TTL不是使用16bit的唷
是8bit的
最小值是1
長度也是1而已
(查詢原文如下:
TCP Default TTL
Code
37
Top Of Page
Length
Fixed, 1 octet.
Top Of Page
Value
An unsigned 8-bit integer specifying a Time-To-Live (TTL) value (in seconds). The minimum TTL value is 1 .
Top Of Page
Description
Specifies the default TTL the client uses when sending TCP segments.
Top Of Page
Structure
Code
Length
TTL
37
1
TTL value in seconds
==================================)
而且
Regedit 並不是在TCPIP這裡
是在底下的
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
^^^^^^^^
所以..這可能要問問大大有沒有要check一下.因為才不會有改和沒改都一樣.(正確會大大造福大家,才不會有OS不穩的問題產生)
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另外在於GlobalMaxTcpWindowSize
也是格式有問題
Data type
Range
Default value
REG_DWORD
0x0–0x3FFFFFFF ( bytes )
(See description.)
Description
Determines the largest TCP receive window that the system offers. The receive window is the number of bytes a sender can transmit without receiving an acknowledgment. This entry takes precedence over TCP's negotiated maximum receive window size.
TCP uses a receive window that is four times the size of the maximum TCP segment size (MSS) negotiated during connection setup, up to a maximum size of 64 KB. TCP for Windows 2000 also supports windows scaling, as detailed in RFC 1323, TCP Extensions for High Performance. Scaling enables TCP to provide a receive window of up to 1 GB.
For Ethernet networks, the default value of this entry is 0x4470 (17,520, or 12 segments of 1,460 bytes each). For other networks, the default value is 0xFFFF (65,535), unless 0xFFFF is larger than each of the following:
Four times the maximum TCP data size on the network.
0x2000 (8,192), rounded up to an even multiple of the network TCP data size.
所以..請大大check 一下 |
