Networking Utilities

Here you will find all kinds of tools and utilities to help in managing and maintaining a Network.  Many of them you will find to be indespensible and of course, all of them are Free.

 

WireShark   [download page]   [Home Page]

wireshark screen shot

Wireshark is the world's foremost network protocol analyzer, and is the de facto (and often de jure) standard across many industries and educational institutions.

Wireshark development thrives thanks to the contributions of networking experts across the globe. It is the continuation of a project that started in 1998.

Features

Wireshark has a rich feature set which includes the following:

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12 Ratings (Avg 2.83)

MyDyndns   [download page]   [Home Page]

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Client for dyndns.org. Supports Windows 95 & XP. Stays in the background and periodically sends your dynamic ip to dyndns.org

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10 Ratings (Avg 2.7)

NetBIOS Enumerator   [download page]   [Home Page]

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This application was suggested to show how to use remote network support and how to deal with some other interesting web technics like SMB. I hope the programmers who want to know this and the users who want to try out this, I could help.

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Nmap   [download page]   [Home Page]

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Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. 

Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. 

It was designed to rapidly scan large networks, but works fine against single hosts. Nmap runs on all major computer operating systems, and both console and graphical versions are available.

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OCS Inventory NG   [download page]   [Home Page]

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Open Computer and Software Inventory Next Generation is an application designed to help a network or system administrator keep track of the computers configuration and software that are installed on the network.

OCS Inventory is also able to detect all active devices on your network, such as switch, router, network printer and unattended devices. For each one, it stores MAC and IP addresses and allows you to classify them.

When running Administration console under Linux, if nmap and nmblookup are available, you will also be able to scan an IP or a sub network for detailled informations about uninventoried hosts.

Last, but not least, OCS Inventory NG includes package deployment feature on client computers. From the central management server, you can upload packages (software setup, commands or only files to store on client computers) which will be downloaded through HTTP/HTTPS and launched by agent on client computer.

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More Titles

Analyzer - is a fully configurable Network Analyzer for Win32. It includes several functionalities that are needed by network management operator. Analyzer is based on WinPcap and it is able to capture packets on most Win32 platforms (and link-layer technologies).

daSniff - is an open source customizable sniffer for win32 systems. It helps you to log your LAN traffic by specifying packet rules as filters.

DeeEnEs - This program is for those people who have an account at one of the website that provide dynamically updateable DNS entries for people who don't have a fixed IP address but still would like to have a host name where they can be reached.

Dynksys Dynamic IP Updater - is a Java-based application that will determine your network's external IP address and update it to a dynamic host name service such as dhs.org or DynDNS.org.

Ethereal Network Analyzer - is used by network professionals around the world for troubleshooting, analysis, software and protocol development, and education.

Hardscan - is a local netstat replacement that scans for open ports the hard way: by binding to each of them and attempting to handshake with itself. It is meant to be useful in a situation where you may have been rooted, rendering the output of netstat and other security tools untrustworthy.

Knocker - Knocker is a simple and easy to use TCP security port scanner written in C to analyze hosts and all of the different services started on them. It is available for Linux, FreeBSD, HP-UX, and Windows9x/2000/NT and it is licensed under the GNU General Public License GPL.

mturoute - is a small (~50k) executable that uses ICMP pings of various sizes in order to determine the MTU values on the path between itself and the target system.

NetBios Scan - is a tool that scan ip ranges and search host with share resources.

ngrep - strives to provide most of GNU grep's common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular or hexadecimal expressions to match against data payloads of packets. It currently recognizes IPv4/6, TCP, UDP, ICMPv4/6, IGMP and Raw across Ethernet, PPP, SLIP, FDDI, Token Ring and null interfaces, and understands BPF filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.

OpenRSM - A Lightweight, Open Source tool for Asset Management, Software Deployment, Remote Control and Network Monitoring, supporting all major desktop systems.

OpenVPN - is a full-featured open source SSL VPN solution that accommodates a wide range of configurations, including remote access, site-to-site VPNs, Wi-Fi security, and enterprise-scale remote access solutions with load balancing, failover, and fine-grained access-controls. Starting with the fundamental premise that complexity is the enemy of security, OpenVPN offers a cost-effective, lightweight alternative to other VPN technologies that is well-targeted for the SME and enterprise markets.

Packetyzer - provides a Windows user interface for the well known Ethereal packet capture and dissection library. Ethereal is used by network professionals around the world for troubleshooting, analysis, software and protocol development, and education.

Scapy - is a powerful interactive packet manipulation program. It is able to forge or decode packets of a wide number of protocols, send them on the wire, capture them, match requests and replies, and much more. It can easily handle most classical tasks like scanning, tracerouting, probing, unit tests, attacks or network discovery.

Show Traffic - monitors network traffic on the chosen network interface and displays it continuously. It could be used for locating suspicious network traffic or to evaluate current utilization of the network interface.

tcping - is a small console application that operates similarly to 'ping', however it works over a tcp port. Not a terribly interesting concept, but I had trouble finding a windows utility to do this that I was happy with.

tsb - This is a python program that acts as a go-between between a telnet port and a serial port. In effect, this adds serial port connectivity to programs such as PuTTY, which lack it. As a secondary function, it could be used to share a serial port over the internet, if you needed such a feature.

WinDump - is the Windows version of tcpdump, the command line network analyzer for UNIX. WinDump is fully compatible with tcpdump and can be used to watch, diagnose and save to disk network traffic according to various complex rules. It can run under Windows 95, 98, ME, NT, 2000, XP, 2003 and Vista. [ no longer supported ]

 

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