sniffer : Java Glossary

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The CurrCon Java Applet displays prices on this web page converted with today’s exchange rates into your local international currency, e.g. Euros, US dollars, Canadian dollars, British Pounds, Indian Rupees… CurrCon requires an up-to-date browser and Java version 1.8, preferably 1.8.0_131. If you can’t see the prices in your local currency, Troubleshoot. Use Firefox for best results.

sniffer

Sometimes called a packet sniffer or protocol sniffer. A tool for watching the data flowing in and out of your computer over the Internet. Sometimes the tool will be specialised just to watch HTML (Hypertext Markup Language) traffic.

Wireshark, formerly known as Ethereal, (free). Very easy to use. It watches everything going on via your Ethernet connection. You can fairly easily trigger a capture to a file. The problem is overwhelm. By default it captures all traffic on your Ethernet card. It is not much use for https. Unfortunately, websites are rapidly flipping to https. It displays gzipped packets without unzipping them first, which is not much use. To solve problems you have to convince the server to use http:uncompressed.
Distinct Network Monitor (also a packet sniffing library for C# C++ VB)
Effetech Etherdetect
Effetech HttpDetect
JPCap: a Java library that lets you capture packets.
NetTool (free).
TCPView (free) for Windows.
OWASP Webscarab gets between your browser and your server (and reports on the HTTP (Hypertext Transfer Protocol) conversations going back and forth). It can also deal with SSL (Secure Sockets Layer). This is a higher level, more convenient, interface than the Ethereal IP (Internet Protocol) packet level, but less general.

CGI
EchoServer
Ethernet
HTTP
LAN
screen scraping
SSL
TCP/IP
Telnet
TLS
Wireshark

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