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8.6

Homebrew Password Reset - Server Connection Fails?

Asked by e_sandrs in Windows 2003 Server, C Programming Language

Tags: Win2k3 SP2, PHP, Apache, C, Port Issue?

We have a web based password reset program that has stopped working for us. We think we have mostly tracked down the problem to the small C program running on one of the DC's (Win2k3 SP2) which is supposed to pass the change information between the web server and AD.

Here's what we know today. If we take the listener EXE and run it from the command line it works fine - it sits nicely running and remote webserver commands can be passed to it and seen executing. Of course, we want it to run as a service - so we used INSTSRV.EXE and SRVANY.EXE to set up a service to keep the listener running. Once we do that, it stops working.

If we stop the service and try rerunning the EXE that used to work from the command line it endlessly scrolls the "Failed to accept client connection" error reporting from the code listed below (full, semi-sanitized, code attached) and doesn't run remote commands anymore.

- We've tried running both the EXE and the service as various administrators and as Local Service with no effect.

- We tried turning off local Symantec Antivirus File Protection in case it was interpreting the activity as viral and eventually uninstalled Symantec - still broken.

This program was working for several years. The only changes we know of that could have caused it to stop is:

1) [March] Windows updates (applied several weeks before we know it stopped working).
2) Turning on a Domain Policy password age limit (currently off, and it still doesn't work).

I think this is some kind of case of Windows protecting itself - but I don't know what we can do to allow this desired application. Any ideas - brilliant or otherwise, will be gladly tested! As noted our web pages run using Apache/PHP and need to talk to our Win2k3 SP2 AD domain. Even if you have some significantly different method of handling these off-site password changes, we'll at least consider them.

That's enough for round 1 - ask for other details as needed, Thanks!

View the Solution FREE for 30 Days

         
             /* Run until cancelled */
    while(1){
      clientlen = sizeof(echoclient);
      /* Wait for client connection */
      if((clientsock = accept(serversock, (struct sockaddr *) &echoclient, &clientlen)) < 0){
        fprintf(stderr,"Failed to accept client connection\n");
        }

Attachments:

code.txt (3 KB) (File Type Details)

Full C program code - mostly stripped of server details

20091118-EE-VQP-93 - Hierarchy / EE_QW_3_20080625

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Homebrew Password Reset - Server Connection Fails?

Asked by e_sandrs in Windows 2003 Server, C Programming Language

Tags: Win2k3 SP2, PHP, Apache, C, Port Issue?

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