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, 9 Jun 2004 94.8K 3.5K 41
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Enhance netstat and packet filtering.

Sample Image - EnetstatX_img.jpg


This article represents an update to my previous one "Enhance netstat". What's new regarding EnetstatX? It has packet filtering capabilities, sniffing using raw sock (disabled from menu, but could be enabled and extended by developers) and pop-up taskbar notifier concerning incoming and outgoing connections.


What it does and base functionalities?

We have three base functionalities:

  • TCP connection manager
  • UDP connection manager
  • Packet filtering
  • Packet sniffing

How it does it?

  • TCP & UDP connection manager is using the following APIs:
             // Gets extended TCP Connection/UDP Listener Table //
             // ! Note -> imported function from iphlpapi.dll          //
            typedef DWORD (WINAPI *pAllocateAndGetTcpExTableFromStack)(
                 IN OUT PMIB_TCPTABLE_EX *pTcpTableEx, 
                 IN BOOL,
                 IN HANDLE,
                 IN DWORD, 
                 IN DWORD); 
            typedef DWORD (WINAPI *pAllocateAndGetUdpExTableFromStack) (
                 IN OUT PMIB_UDPTABLE_EX *pUdpTableEx , 
                 IN BOOL,
                 IN HANDLE,
                 IN DWORD, 
                 IN DWORD);
            class content: CTCPTable and CUDPClass
  • Packet filtering is using the following APIs (iphlpapi.lib):
             class content: CFilter
  • Packet sniffing is using raw socket capabilities:
             // Create a raw socket 
             socket(AF_INET, SOCK_RAW, IPPROTO_IP);
             // Set sock option
                  (const char *)&rcvtimeo,
             class content: CFilter

How to use it?

Hmmm ... Run it, and there will be no problem. The graphical interface is intuitive, I hope Wink | ;) .

Note: WinXP supported only.


In the final step, I would like to tell you guys that maybe there will be an update to this article regarding design part. I didn't have much time to do it, but if one of you are interested to cooperate or to continue this project, I can give you some ideas, and if necessary all my support. What more can be done? I was thinking that it could be nice to have a "passive OS fingerprinting" module that can detect the OS of connected computers. Another module can be to focus on "report and statistics" with compare capabilities and "what's new about my connection activities" ...




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Romania Romania
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Comments and Discussions

GeneralNo path /res in source Pin
NielsR15-Sep-04 5:22
memberNielsR15-Sep-04 5:22 
GeneralRe: No path /res in source Pin
y0da15-Sep-04 6:05
membery0da15-Sep-04 6:05 
Generalrunning EnestatX on Win2000 Pin
y0da13-Jun-04 22:30
membery0da13-Jun-04 22:30 
GeneralRe: running EnestatX on Win2000 Pin
TaknuMone14-Jun-04 3:21
memberTaknuMone14-Jun-04 3:21 
Hi y0da

great work, changes got the program to come up with some errors:

in: DWORD CTCPTable::GetTableEx(void)

File: i386\chkesp.c
line: 42

the value of esp was not properly saved across a function call. this is usually a result of a function declared with one calling convention with a function pointer declared with a different calling convention.

if you keep pressing the igonre, the application will come up, but

GeneralRe: running EnestatX on Win2000 Pin
feldman_joel14-Jun-04 11:19
memberfeldman_joel14-Jun-04 11:19 
GeneralRe: running EnestatX on Win2000 Pin
NielsR15-Sep-04 8:15
memberNielsR15-Sep-04 8:15 
GeneralRe: running EnestatX on Win2000 Pin
zcy_beijing30-Jun-05 19:12
memberzcy_beijing30-Jun-05 19:12 
GeneralRe: running EnestatX on Win2000 Pin
silencew5-Jul-05 9:09
membersilencew5-Jul-05 9:09 
GeneralGot it to compile on w2k but... Pin
TaknuMone12-Jun-04 16:29
memberTaknuMone12-Jun-04 16:29 
GeneralI'm waiting to give this a 5, but... Pin
prcarp10-Jun-04 11:47
memberprcarp10-Jun-04 11:47 

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