top network security tools

information. Tcpdump provides source code, exposes interfaces, and is highly scalable, and is a useful tool for network maintenance and intruders. Tcpdump exist in the basic FreeBSD system, because it needs to set the network interface to promiscuous mode, ordinary users can not perform normally, but the user with root permission to execute it directly to obtain information on the

Now, most families have become a trend to access the Internet through the formation of wireless networks. Yet how many people know that there are so many cyber-security problems lurking behind this trend. In principle, wireless networks are more vulnerable to intrusion than wired networks, because the attacked computer and the attacking computer do not need the connection on the network cable device, he can

network name is connected to the network. Therefore, it is necessary to modify the default name. For more information, see password setting. 3. Client MAC address filtering Set that only clients with the specified MAC can connect to the access point. You can further check the connection.The above three methods are only the basic settings of XP Wireless Security.

. June 24, 2004, IEEE passed the 802. 11i based on the SIM card authentication and AES encryption method for wireless LAN provides security, making wireless LAN has a more extensive application space. Security mainly includes access control and encryption two parts. Access control guarantees that only authorized users can access sensitive data, and encryption guarantees that only the correct recipient can

the console, and then use the pipeline to redirect it to Netcat. Netcat can send it over the network. On the client side, download the compressed package through the Netcat pipeline and open the file. If you want to save the bandwidth transfer package, you can use bzip2 or another tool to compress it. Server $tar -cvf – dir_name| bzip2 -z | nc -l 1567 Compress with bzip2 Client $nc -n 172.31.100.7 1567 | bzip2 -d |tar -xvf - Use bzip2 for decompressi

security. Kernel Keys key Keyspace Keystroke Recorder (Key Recorder) tools used to steal others' user names and passwords LAN Server Local security Log * logs and records Logging Logon Logoff logout Logical port Logon Registration Logon script LFN long file name Logic bomb (logical bomb) is a program or code that can cause a system lock or failure. Mass browser

With the update of the internet, we are welcome to use the IPv6 network protocol. After we continue to praise the advantages of the IPv6 network protocol, we are also worried about some of its vulnerabilities and problems. The computer network protocol version 6 (IPv6) does not improve the Web security of enterprises.

or safety check. The access point can be configured to require the client to enter a password when accessing. Without a password, an intruder can connect to the internal network by enabling a wireless client to communicate with the access point. However, some access points require all clients to have the same access password. This is very dangerous. 2. Roaming attackers: Attackers do not need to be physically located inside corporate buildings, and

accurate network name rather than the network name that the XP system automatically provides. 2, the use of irregular network names, prohibit the use of the default name. If you do not broadcast, an attacker can still connect to the network by guessing the network name, s

Every organization that is considering deploying a VoIP Phone System has heard the same terrible warning: "routing voice calls over the data network will expose the call content to eavesdroppers ".Although in fact, any phone call is at risk of being eavesdropped to some extent, is the VoIP call system itself at a high risk? In this article, we will explore the ins and outs of VoIP eavesdropping.VoIP eavesdropping is possibleFirst, it is very important

a backup zone in another zone on the server. However, this backup method has a major drawback, that is, once the server's hard disk encounters a problem, data in all partitions will be lost, so that backup is not guaranteed. According to the theory that "don't put all the eggs in the same basket", we should use dedicated devices to save the precious data. Server B is used to save data of server A and files of server B at the same time. This cross-backup method is very popular for A period of ti

Log data can be a valuable information treasure or a valuable data quagmire. To protect and improve your network security, log data of various operating systems, applications, devices, and security products can help you discover and avoid disasters in advance, and find the root cause of the security event. Of course, t

this way, even if an illegal user knows the management password, the user cannot intrude into the account because the IP address is unauthorized. In my personal experience, the Intranet can control access permissions by dividing VLAN Virtual LAN, while the Internet needs to use the ACL Access Control List to precisely assign authorization. (5) 　Five sins: Management Culture The security defect of management culture is the most common problem in smal

. By labeling Web server security levels and availability security policies, network administrators will be able to easily deploy various software tools on different operating systems. 　　IIS Security Tips Microsoft's products have always been a target, so IIS servers are par

We are very interested in understanding network router settings. Before giving you a detailed description of how to set up a vro, let's first understand the security configurations and system tools related to it. 1. Security Configuration 1. firewall configuration. This interface controls the enabling of the overall fu

Inventory of six top WiFi wireless network search tools Source: huajun news Author: fenda compiled RSS copy link Printing Core tips:Windows's wireless network search tools are quite simple, and the WiFi network with intermittent disconnections is definitely not what we want.

Stay up, Baidu is not powerful enough, and many tools Baidu cannot come out; 1. Footprinting) Purpose: Takes the initiative to obtain information and intelligence, and determines the target domain name system, network address range, namespace, and key system settings, such as the gateway email server; Related Technologies: Source Query, Whois, whois web interface, Arin whois; Tool used for click farming:

If you do not pay attention to the security measures of the wireless network system, it is certain that serious security problems are caused. Therefore, to avoid network intrusion, how to set up a secure wireless network connection. If the wireless

addition to operating systems, as well as anti-virus software, firewalls, Web browsers, and wireless network client programs, these all require real-time upgrades to reduce attacks caused by their own defects. 7. Protect any sensitive information The personal information retained on the web page will become very useful for hacker attacks. Therefore, some encryption tools can be used if conditions permit. 8

How many technologies can be hidden in the security of wireless networks? So is hiding the SSID really effective for our use? The following article will explain it to us. Wireless network security has always been a hidden danger. Most home users think that hiding the SSID wireless network ID can greatly improve