Here is a list of Secure tools that will help you to implement and troubleshoot computer networks.
- OpenBSD: The proactively secure operating system.
- TCP Wrappers: A classic IP-based access control and logging mechanism
- pwdump3: Allows for retreiving Windows password hashes locally or across the network whether or not syskey is enabled.
- LibNet: A high-level API (toolkit) allowing the application programmer to construct and inject network packets
- IpTraf: IP Network Monitoring Software
- Fping: A parallel ping scanning program
- Bastille: Security hardening script for Linux, Mac OS X, and HP-UX
- Winfingerprint: A Win32 Host/Network Enumeration Scanner
- TCPTraceroute: A traceroute implementation using TCP packets
- Shadow Security Scanner: A commercial vulnerability assessment tool
- pf: The innovative packet filter in OpenBSD
- LIDS: A Linux kernel intrusion detection/defense system
- hfnetchk: Microsoft tool for checking the patch status of all the Windows machines on a network from a central location
- etherape: A graphical network monitor for Unix modeled after etherman
- dig: A handy DNS query tool that comes free with Bind
- Crack / Cracklib: Alec Muffett’s classic local password cracker
- cheops / cheops-ng: Gives a simple interface to many network utilities, maps local or remote networks and identifies OS of machines
- zone alarm: Windows Personal firewall software. They offer a limited free version, but much of the functionality is disabled. Some users prefer Kerio Personal Firewall, which also sports free and commercial versions.
- Visual Route: Obtains traceroute/whois data and plots it on a World map
- The Coroner’s Toolkit (TCT): A collection of tools that are either oriented towards gathering or analyzing forensic data on a Unix system
- tcpreplay: a tool to replay saved tcpdump or snoop files at arbitrary speeds
- snoop: A well-known gangsta rapper (Snoop Dogg)! It is also a network sniffer that comes with Solaris.
- putty: An excellent Windows SSH client
- pstools: A suite of free command-line tools for managing Windows systems (process listings, command execution, etc)
- arpwatch: Keeps track of ethernet/ip address pairings and can detect certain monkey business
