Seconfig XP

Seconfig XP is a straightforward and portable piece of kit that provides a few configuration options concerning the operating system. For example, you can stop the OS from using TCP/IP as a transport protocol for NetBIOS, SMB and RPC.
Since installation is not an issue, you can simply drop the executable file anywhere on the hard disk, and run it immediately.
Alternatively, you may store Seconfig XP on a USB flash drive or similar storage unit, in order to run it on any computer seamlessly.
What's more important is that Windows Registry does not get entry updates, and files are not left behind on the hard drive after program removal.
The interface of the application is represented by a regular window with an uncomplicated layout. The "what you see is what you get" principle certainly applies to Seconfig XP, as there are no other options available, besides the ones shown in the primary window.
It is possible to restrict Microsoft networks (e.g. disable SMB or RPC over TCP/IP), configure services settings (e.g. disable Remote Registry and Messenger), as well as customize TCP/IP preferences (e.g. drop all incoming IP source-routed packets, disable ICMP redirect and IRDP - all interfaces). You can view the current status and restore all options to their default values.
Seconfig XP is very light on the system resources, as it uses a minimum amount of CPU and system memory. It has a good response time and immediately applies changes to the OS, without hanging, crashing or popping up error dialogs. However, Seconfig XP has not been updated for a very long time.