
Network Sniffer is a powerful network analysis tool. It consists of a well-integrated set of functions that can resolve network problems. Network Sniffer can list all of the network packets in real-time from multi network card (Include Modem, ISDN, ADSL) and can also support capturing packets based on the applications (SOCKET, TDI etc). You can observe all traffic of the application that you are interested in. It is easy for you to learn and simple to use. Network Sniffer has plug-ins for different protocols such as ETHERNET, IP, TCP, UDP, PPPOE, HTTP, FTP, WINS, PPP, SMTP, POP3 and so on
Sniffer is a registered trademark of Network Associates, Inc. used on their network analyzing products.
Today, sniffer becomes a special name of network monitor and analyzer; it also usually stands for a means of collecting data and information. ISS defines sniffer as: Sniffer is a tool which utilizes network interfaces of computer to capture data packets which destination is other computers.
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What is a network sniffer used for?
Typical use of network sniffer is to analyze network traffic, so that underlying troubles in network can be found out. However, two directional usages of sniffer have coexisted since it was produced:
- Positive usage
Positive usage of sniffer is also its regular usage, which aim is to maintain network and system working normally.- Capturing packets;
- Recording and analyzing traffic;
- Decrypting packets and displaying in clear text;
- Converting data to readable format;
- Showing relevant information like IP, protocol, host or server name and so on.
Not all sniffing softwares have same functions; some sniffers can analyze hundreds of protocols whereas others can only deal with one or two. The most common protocols analyzed by sniffer are TCP/IP, IPX, DECNet.
Ordinarily, sniffer is used as an assistant of network management for its monitoring and analyzing features can help us to troubleshoot network, detect intrusion, control traffic or supervise network contents. But such features may also be utilized by hackers as a snooping tool to break into other computers.
- Negative usage
Negative usage of sniffer is well known as its harms to network security:- Catching password, which is the main reason for most illegal uses of sniffing tool;
- Capturing special and private information of transactions, like username, credit ID, account, and password;
- Recording email or instant message and resuming its content;
- Some Sniffers even can modify target computer's information and damage system;
- Disserving the security of network places or to gain higher level authority.
With more and more negative uses of sniffer, it is ridiculous that sniffer is becoming the biggest obstacle to network security at the same time is the most important tool to defense network attacks.
This is a collection of tools for sniffing networks. It includes:-
1. lan search pro
2. MAC Address Changer
3. net scan
4. net sniffer
5. Net Stumbler Installer 0_4_0
6. net worx
7. pinspector
8. SuperScan4
9. wireless mon














