Article title: open-source network analysis tool TCPTrafficAnalyzer. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Several notable analysis functions of TCP Traffic Analyzer include:
The number of TCP connections that have exceeded (or less than) a certain threshold.
-2500 shows packets that originate from UDP or TCP, and the port number is within the range of 2000 to 2500.Not IMCP shows all packets except ICMP. (ICMP is usually used by the Ping tool)SRC host 10.7.2.12 and not DST net 10.200.0.0/16 display a source IP address of 10.7.2.12, but the destination is not a 10.200.0.0/16 packet.(src host 10.4.1.12 or src net 10.6.0.0/16) and TCP DST Portrange 200-10000 and DST net 10.0.0.0/8 display source IP for 10.4.1
Introduction to the use and setting of the network security tool software BlackICE)BlackICE won the PC Magazine technical excellence award in year 99. Experts commented on it: "For home users without firewalls, BlackICE is an indispensable line of defense; for enterprise networks, an additional protection measure is provided. Instead of replacing the firewall, it blocks intruders attempting to pass through
Recently, the company's network is always slow.
When I was so upset, I came up with a small tool for online monitoring and latency testing.
In fact, both 360 and Jinshan have corresponding functions.
However, I am a code engineer. I am not used to the commercial atmosphere of 360, and Kingsoft is not angry.
Let's take a look at Kingsoft.
Pretty good.
Below is an example
Look, this MS is reall
Similar to top monitoring system activity, ntop is a tool used to monitor network usage in real time. Because ntop has the Web interface mode, it is easy to get started quickly in a short time, regardless of configuration or usage. Nbsp; this version partially overwrites the ntop processing engine, mainly used
Similar to top monitoring system activity, ntop is a tool
First, Network test tool IPERF1, installation package Apt-get-yinstalliperf2, parameter description-s,--server Runinservermode (start in server mode)-c,--clientThis article is from the "7928217" blog, please be sure to keep this source http://7938217.blog.51cto.com/7928217/1669463Disk and Network test tool (Iperf hdpa
netstat.SS Command Help# SS-HUSAGE:SS [Options] SS [Options] [FILTER]-H,--h elp This message-V,--version output version information-N,--numeric don ' t resolve service names-R,--resolve Resolve host names-A,--all Display all sockets-L,--listening display listening sockets nbsp;-O,--options show timer information-E,-- extended Show detailed socket information-M,--memory Show Socket Memory usage-p,--processes Show process using socket-I,--info Show Internal TCP information-S,--summary Show
Netstat-ant | grep EST | Wc-l235Real 0m12.970User 0m0.334sSYS 0m12.561sThe result is obviously SS statistics concurrent connection number efficiency Netstat, in SS can be done, you will also choose Netstat, still hesitate, see the following example, or jump to help page.Common SS Commands:Ss-l Show all ports that are open locallySS-PL Show each process specific open socketSs-t-A displays all TCP socketsSs-u-a displays all UDP Socektss-o state established ' (Dport =: SMTP or sport =: SMTP) '
Tag:android network wifiapn public class Networkhelper {private static String Log_tag = "Networkhelper";p ublic static uri uri = Uri.parse ("content://t Elephony/carriers ")/** * Determine if there is a network connection */public static Boolean isnetworkavailable (context context) {Connectivitymanager Connectivity = (Connectivitymanager) context.getsystemservice (Context.connectivity_service); if (connect
From yesterday morning, the company's network to Beijing went wrong.ItDepartment upgrade. In this way,CQ,Remote clientI think there is nothing to do at once, and it is true that the Code cannot be checked in, and the project cannot be compiled,CQThe status cannot be updated, so it suddenly becomes idle. Not used.
From this point of view, with the advancement of science and technology, the modern society is increasingly dependent on the
Android Network Connection Tool
Public class NetUtil {/*** check the current network */public static boolean checkNet (Context context) {// determine whether the current user's mobile phone uses WIFI to communicate boolean isWIFI = isWIFIConnection (context); // determine whether the current user's mobile phone uses APN to communicate boolean isAPNConnection (con
smokeping configuration file has been modified)[Email protected] smokeping]#/etc/init.d/smokeping restart Finally access the Smokeping monitoring page through the browser: http://192.168.1.120/smokeping this time the page may be garbled, because the Chinese font is not loaded, and then add a font for smokepingInstall fonts: yum-y Install Wqy-zenhei-fonts.noarchEdit graphs.pm:vim/usr/local/smokeping/lib/smokeping/graphs.pm# line 147th below inserts '--font title:20: ' Wenquanyi Zen Hei Mono ',A
manage which users can access the Ntopng through the settings menu on the right-hand side of the top (the one on the gear icon).Ntopng offers a wide range of timelines, from 5 minutes to 1 years. You just need to click on the timeline you want to display. The chart itself can be clicked, and you can click it to zoom in.Of course, Ntopng can do more than the above picture shows. You can also integrate location and e-map services. On Ntopng's own website, there are paid modules available for use,
Hydra is an open-source brute-force cracking tool of thc, a famous hacker organization. It has versions on multiple windows and linux platforms. It can quickly launch Dictionary Attacks on systems requiring network logon, including FTP, POP3, IMAP, Netbios, Telnet, HTTP Auth, ldap nntp, VNC, ICQ, Socks5, and PCNFS!
Download link: http://down.51cto.com/data/146319
> Go to the treasure chest of
Iptraf: A Practical TCP/UDP Network Monitoring Tool
Iptraf is an ncurses-Based ip lan monitor that generates statistics including TCP information, UDP count, ICMP and OSPF information, Ethernet load information, node status information, IP checksum and error, and so on.
The ncurses-based user interface saves you from the tedious command line switch.
Features
IP traffic monitor is used to display IP traffi
It is common to have multiple computers or friends who often use different computers. I believe many of my friends use USB flash drives to store some of their daily usage.
Program , Work
Composition Files and other documents so that they can work smoothly on every computer. But you have never encountered it. Sometimes you modify a document on a computer, forget to copy it back to the USB flash drive, and go to another computer to find that the document is not the latest. When such a situation
app. the reason that this is important for imageloader (the helper class that handles loading and caching images) is that the main function of the in-memory cache is to allow for flickerless rotation. using a Singleton pattern allows the bitmap cache to outlive the activity. if instead you create the imageloader in an activity, the imageloader wocould be recreated along with the activity every time the user rotates the device. this wocould cause flickering.
An example of LRU Cache
Volley provi
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.