xSharez scanner
xSharez scanner is a multithreaded NetBIOS/SMB scanner designed for both network administrators and users interested in the network security issues. This software will help you to solve one of the most serious problems of all modern computer networks - unauthorized data access using NetBIOS/SMB... - Generate advanced HTML and CSV reports and analyze the network security level using this information. ... - Mount shared resources that are found by the program as network drives or simply browse them using Windows Explorer.
http://www.tools-for.net/download/xsharez3demo.exe - 1Mb - Download - Screenshot

NATural IP SOHO
If your network or internet connection uses any of these... * Shared IP address * Network Address Translation (NAT) * a Firewall of some kind ... then you have probably found that it causes problems with many kinds of Internet applications. You need to use programs like NetMeeting®, VOIP, file... NATural IP, on the other hand, allows you to run all your existing applications without reducing your network security or requiring individual IP addresses for each PC on your network. ... But that reduces your network security, which you probably wouldn't want to do.
http://www.naturalip.com/download/NATural-SOHO.exe - 372Kb - Download - Screenshot

Nsauditor Network Security Auditor
Nsauditor Network Security Auditor is a network security scanner that allows to audit and monitor remote network computers for possible vulnerabilities, checks your network for all potential methods that a hacker might use to attack it. Nsauditor is a complete networking utilities package that... The program also includes real-time network packet filtering and analyzing, remote network performance monitoring, network status monitoring, web proxy scanning, password auditing, intrusion detection system based on security events log analyzer, IP address lookup and more than 45 network tools...
http://www.nsauditor.com/downloads/nsauditor_setup.exe - 5Mb - Download - Screenshot

MPM MultiPlugMate
MPM MultiPlugMate is a program for the administration of network setting profiles. It is especially suitable for mobile computers that are frequently connected to different LAN / WLAN networks. MPM MultiPlugMate is not intended to define network settings. ... This generally enhances the security level, with the result that after plugging into a network you can immediately work and surf - without any second thoughts. ... MPM saves complete sets of network settings in profiles, which can be activated with a simple mouse click, if required.
http://www.multiplugmate.com/down/Mpm1inst.exe - 689Kb - Download - Screenshot

PC Security Explorer
PC Security Explorer highly improves your computer's security. You get powerful tool that monitors loaded programs and Internet traffic, and also cleans your computer up from security threats and make backup of your documents. Computer Contro" section provides four applications. ... Go to "Local Network" to find out who's accessing your data in local area. ... Internet Security section provides seven applications. ... You can scan your hard discs here looking for security threats. ... And last but not least "Password Reminder" unhashes for you forgotten password in other program.
http://www.softigo.com/products/trial/PCSE_Trial_Setup.exe - 823Kb - Download - Screenshot

Virtual Modem
There are many old data-centric applications that, for historical reasons, use direct modem connections to exchange data between Client and Server. Nowadays, local and global TCP/IP networks have made the direct modem connection obsolete. Here's why: When you use a direct modem connection, you... In a TCP/IP network, on the contrary, you can use the power of a VPN (Virtual Private Networking), SSH or any other secure tunnel to ensure privacy and security. ... This program creates virtual modems that use your local network or the Internet instead of a physical phone line.
http://www.virtual-modem.com/virtual-modem.zip - 737Kb - Download - Screenshot

Infiltrator Network Security Scanner
Infiltrator is a network security scanner that can quickly audit your network computers for possible vulnerabilities, exploits, and information enumerations. It comes with a built-in database of know vulnerabilities, that can be updated online and allows you to select the items to scan for or to... It can also audit password and security policies, perform HTTP/CGI server auditing, registry auditing In addition, Infiltrator also comes with 18 network utilities for footprinting, scanning, enumerating and gaining access to machines (ping sweep, whois lookups, email tracing, share scanning and...
http://www.infiltration-systems.com/Files/infiltrator.zip - 1Mb - Download - Screenshot

ProSecurity
ProSecurity is kernel-level security protection software based on behavior detection. By intercepting and protecting system behaviors such as application loading, cross-process operations, registry operations, network access, direct physical memory access, installation of Windows hooks or system... It features a kernel-based security protection solution which can intercept behaviors threatening host security, and implement some measures in reaction: allow, block or let the user to decide whether to allow this action, so as to block malware intrusions.
http://www.proactive-hips.com/download/pssetup.exe - 2Mb - Download - Screenshot

Complete Anonymous Internet
Complete Anonymous Internet is a utility to let you hide your IP address when browsing the web, sending email, posting to usenet news groups, downloading via FTP and all other internet (TCP/IP) related programs. Furthermore by redirecting the incoming TCP/IP traffic through a SOCKS proxy,... Instead all security software will be installed on SOCKS proxy only, where the incoming traffic will be scanned and only safe content will be sent to corporate network. ... ) on every single computer.
http://www.pcmesh.com/caitrial.exe - 2Mb - Download - Screenshot

1st Security Center Pro
1st Security Center is a powerful security utility that allows you to restrict access to Windows important resources. This easy-to-use utility helps you to keep your computer in order. It enables you to impose a variety of access restrictions to protect your privacy. ... 1st Security Center supports Internet Explorer security that enables you to customize many aspects of the Internet Explorer Web browser. ... The administrator password prevents anybody to run the program and change settings and uninstall the program.
http://www.1securitycenter.com/downloads/sc.zip - 1Mb - Download - Screenshot