Posts Tagged ‘Wireless network’

How to Capture Wireless Network Traffic

June 9th, 2014 No comments

As an innovative and high quality network analysis solution, Capsa network analyzer is not only designed to monitor and analyze wired network traffic, but also for wireless LAN traffic, including 802.11 a/b/g/n networks.

The Enterprise Edition of Capsa network analyzer provides you the capability of wireless network capturing and encrypted wireless data decoding. No matter which encryption type an AP uses, all WEP, WPA and even the hardest WPA2 wireless traffic can be decrypted with the pre-specified security key. Additionally you do not have to figure out the encryption type of an AP, Capsa identifies and matches the encryption type of keys automatically.

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We all know that users have to connect to an AP (Access Point) in order to access wireless network; users must have a wireless network adapter in order to access a wireless AP. Therefore, to capture wireless traffic, we use Capsa to monitor a wireless network adapter.

Please follow steps below to monitor and capture the traffic of wireless network.

1. On the Start Page, choose a wireless network adapter. Once a wireless network adapter is enabled, Capsa automatically detects and displays all available APs.

2. Choose an AP that you want to monitor, and if the AP is encrypted, enter the password for it. Once an encrypted AP is enabled, a dialog box pops up to let you enter the key. If the dialog box doesn’t pop up, just double-click the AP to open the box.

3. Click Start to start monitoring; or if you want to set up alarms, capture filters, packet auto-saving, choose a proper network profile and a proper analysis profile and then click Start to start monitoring

  • Once a wireless network adapter is used for capturing packets, it cannot be used for accessing the network anymore.
  • If you enter the wrong key for an AP, the analysis project will run as well but it will not decode any packets.
  • One analysis project can monitor multiple APs at a time, but the APs must be at the same channel.

 To decode and analyze wireless traffic, you are recommended to:

  • Make sure the password for monitored AP is correct.
  • Be close enough to the wireless router (signal source) to thereby capture all packets.
  • Monitor the AP before other hosts access the network to thereby capture EAPOL handshake packets.

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Capsa Network Analyzer Free Edition 7.7 – review by SoftPlanet

March 4th, 2014 No comments


Capsa Network Analyzer Free Edition 7.7 Video Review


Today we use the Internet on a regular basis and in order to have a better experience while browsing we need a stable network.Capsa Network Analyzer Free Edition will provide it to you, because it constantly monitors your network, analyzes it and helps you prevent troubleshooting. The only limitation of the program is that you can start one project at a time. If you want more you have to buy the Enterprise version, which costs USD 995 for a one year license and maintenance. If you want to increase the time limit with one more year you have to buy it for additional USD 245. But if you don’t need the app for commercial usage you can use it for free without limitations.


Several working modes
Analyzes networks
Monitors traffic
Shows statistics

Capsa Network Analyzer Free Edition lets you use several modes that are specialized for different tasks. With them you can make a full analysis of your network or you can choose to start theTraffic Monitor. Also, you can make a profile that is aimed at HTTP Analysis, Email Analysis, DNS Analysis, FTP Analysis and IM Analysis.


The interface of Capsa Network Analyzer Free Edition seems simple at first, but when you start any of the modes you see that it actually has a lot of sides to it. When you double-click on any of the profiles the app offers a lot of setup options that are used for the analysis. If you want to start the monitoring or the analysis you can click on the Start button and you will see that the app has a lot of instruments, which leads to a bit of a complicated interface. But after you spend some time with it you will see that all the monitoring and analysis utilities are easily used and you don’t have to be a specialist in order to use them.

Basic Operations

When you start the Full Analysis option of Capsa Network Analyzer Free Edition it opens a window for you that is comprised of different panes which show the most important functions of the program. With them you can monitor the traffic in bytes, the protocols, the IP conversations and perform many more analyses and monitoring functions. There are a lot of other instruments that you will find useful after you get used to them.


Capsa Network Analyzer Free Edition is a nice application not only because it is free, but also because with it you will be able to monitor all the aspects of your network. It offers a nice visualization for a vast number of utilities, so even though they are a lot you will still be able to use them without any problems.

Many utilities
Nice visualizations
Completely free version
None really

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Learn more from Colasoft official website.

Colasoft Capsa 7.4 Now Support 802.11 a/b/n/g Wireless Networks

March 16th, 2011 No comments

We are very pleased to announce that Colasoft Capsa network analyzer has been upgraded to version 7.4, with great new features and enhanced interface and user experience.

Colasoft Capsa 7.4 is now capable of monitoring, troubleshooting and analyzing 802.11 a/b/g/n wireless networks, which make Capsa not only an Ethernet network analyzer, but a packet sniffer for both wired and wireless networks. Besides that, Capsa interface and user experience has been highly enhanced, too. We have made many changes and improvements like optimize start page layout, network profile settings, and so on.

Key Features of Colasoft Capsa 7.4:

Enterprise-class capabilities including NOC level visibility
Network Monitoring and Application Performance Monitoring
24*7 Continuous Network Traffic Capturing
Expert Analytics in Real-time and Post-capture
Extended Security Analysis
Traffic Statistics & Bandwidth Utilization
In-depth Packet Decoding and Ability to Drill Down for Network & Security Forensics

Colasoft Capsa 7.4 now has full different editions to meet different demands: enterprise edition, professional edition, WiFi edition and free edition. Free trails are all available at

Using Capsa for WiFi to Secure Your Wireless Network

December 30th, 2010 3 comments

By ZhaoRui Meng — CCIE Security

Wireless technology is one of the most fast-growing network technologies. It has been spreading rapidly around the company, campus, public area etc. Unfortunately, many implementations are being done without attention to issues of security and authentication. As a result, many wireless networks are set up so that anyone with mobile equipment can access, even from outside the building. Anyone with the proper equipment can also spy on traffic. The problem with WLAN users is that very few understand how their data is sent through the air, much less comprehend the associated risks.

Recently a study discovered that 40 – 50% of the wireless users aren’t implementing any form of protection. Some wireless networks are encrypted with WEP key, which is significantly less secure than WPA. To prove my point, I randomly scanned wireless networks around my office building and found out 7 WLANs were encrypted by WEP keys, one network unencrypted among 15 SSID received. It takes no more than 10 minutes to crack a WEP password by BT3. WPA has helped to increase the security available to wireless network. But a good dictionary may brute forcing a WPA password when the pre-defined key is weak.

Due to the broadcasting nature of radio propagation at typical Wi-Fi frequencies, anyone on the street or in the neighborhood will have chance to access to it. A whole subculture has sprung up of people going around, scanning for open wireless nodes, and publicizing them to people who want free wireless access. Capsa for WiFi helps network administrators manage access control by monitoring access IP addresses and security. Capsa for WiFi can detect all access IP addresses as well as peer hosts activities, to monitor network activities and identify network penetration and scanning anomalies. More specifically, any wireless engineers can use Capsa for WiFi to lock down network intruders, monitor clients’ online activities, and spot malware like worms, ARP attacks, Trojan horses etc. To deploy Capsa for WiFi is as simple as to connect your Caspa for WiFi equipped station with a common wireless card to your AP and enable traffic capturing on the fly. You can realize wireless network management without setting up port mirroring.