Packet Analysis Aha, finally it is time to start using our newly obtained Jedi skills! (wheee!!) This section will focus on peaking into the packets to extract the information (which is what we wanted to begin with). First off we must arm ourselves! Go ahead and get all the relevent RFC's. Lets start off with RFC 791 (IP) RFC 768 (UDP) RFC 826 (ARP) RFC 792 (ICMPv4) and of course RFC 7...

Writing a Basic Packet capture Engine Hi :-), this section consists of a discussion on how to write a simple packet capture engine. The goal is to demonstrate methods of capturing and filtering multiple packets to aid in packet analysis. All the juicy info on disecting IP packets and forging new ones are reserved for later sections.. Yes I can see your dissapointment, but you must admit that a ...

Intro: Well here it is, the beginning of my packet capture tutorial a la libpcap. Inevitably the questions will arise.. "what the hell is packet capture?!" or "Who is libpcap!?" ... so I guess I'll start off by answering these questions... Getting Started Well there is an awful lot to cover.. so lets just get familiar with libpcap. Like I stated before, all the code in this section is assuming...

and I cannot active chinese input using 'ctrl + space'! help

Hello Sir, I am new here and new on hp-ux,maybe so low level, but I have to.....;-( do you know how to capture the graphic on unix system?what kind of tool would be good to capture? Thanks in advance. Jingbin

Linux的高手应该也懂windows 的网络环境吧？ 在xp里建立一个拨号连接，截包工具就会识别出有一个 adapter for generic dialup and VPN capture 的适配器（我们称为A）。 然后拨号，拨号成功后又会再产生一个pppoe的连接（我们称为B）。 另外，还有最熟悉的“本地连接”（我们称为C）。 抓了拨号过程的包，我发现： 从适配器A截来的包，就比 B 的多了最开始的“拨号动作的包”，而 C 的每个包又都比 A、B 的多了pppoe 和 ppp 两层...

vpn

我在wireshark中看到它 今天，编写用winpcap获得接口的程序也得到了它

vpn

Synopsis: The data warehouse system always needs to be refreshed by extracting the change data from the source databases. There are a number of strategies and methods often used to achieve this summarized as below: 1. Table (File) Differencing Full Scan 2. Value-change selection base on Timestamp 3. Base on DBMS Log 4. Base on Trigger Mechanism 5. Base on Replication Technology All of these method...

官方手册里在这部分中举了一个例子： Example 7-1. capturing template content {* we don't want to print a table row unless content is displayed *} {capture name=banner} {include file='get_banner.tpl'} {/capture} {if $smarty.capture.banner ne ''}

在沒有高級的 cisco 時,該如何做 netflow 流量統計呢? fprobe 會是你的好選擇... 安裝路徑在 /usr/ports/net-mgmt/fprobe/ 不需要用什麼特殊參數... 裝完之後，假設你接 switch mirror port 的網卡是 bge0 則 /usr/local/sbin/fprobe -i bge0 127.0.0.1:9991 可以丟給本機 127.0.0.1 也可以丟到遠端的主機去.. 這樣就會產生 netflow 的資料了.. 再利用 flow-capture 來接收資料 /usr/local/bin/flow-capture -z 6 -n 143 -e 8928 ...