network security protocols

Network virus number down over 50% network security still can't be underestimated Data show that in the first half of 2010, 4.22 million new viruses on the Internet, the same period last year decreased by 53.7%; The new horse-linked website (calculated as a URL) totals 26.66 million, down 90% from a year earlier. In the first half 596 million people were infecte

. ◆ Reliability of backup and replacement cannot be guaranteed: the replacement of key equipment (especially some key interface boards) generally affects the operation of services or equipment, and the success rate of replacement cannot be guaranteed at present, the switch may fail in an emergency. ◆ The reliability of the software cannot be guaranteed: there are some problems with the software versions and patch policies of some vendors, and too many software and patches bring about compatibili

secondsDisadvantagesCan't go wrong, or the problem will be very seriousBackup is unsuccessful and cannot be restored to a point in time3. Virtual Network Technology1.vlanIP-based Port-based technology for MAC addressesLimit broadcast to the scope of each virtual network, thus reduce the transmission of broadcast packets across the network, and improve the transm

有认证机构施加数字签名,只要看到公钥证书，我们就可以知道认证机构认证该公钥的确属于此人3.2.数字证书的内容4. 1）公钥5. 2）认证机构的数字签名6.3.证书的生成步骤7. 1）生成私钥 openssl genrsa -out private.pem 10248. 2）创建证书请求 openssl req -new -key private.pem -out rsacert.csr9. 3）生成证书并签名，有效期10年 openssl x509 -req -days 3650 -in rsacert.csr -signkey private.pem -out rsacert.crt10. 4）将 PEM 格式文件转换成 DER 格式 openssl x509 -outform der -in rsacert.crt -out rsacert.der11. 5）导出P12文件 openssl pkcs12 -export -out p.p12 -inkey private.pem -in rsacert.crt12.13.4.iOS开发中的注

A router is an important bridge between a LAN and an external network. It is an indispensable part of the network system and a leading edge in network security. However, vro maintenance is rarely valued. Imagine that if a vro does not guarantee its own security, the entire

Find a wireless network Finding a wireless network is the first step in an attack, where two common tools are recommended: 1, Network Stumbler a.k.a NetStumbler. This windows-based tool makes it very easy to find radio signals that are broadcast in a range, and to determine which signals or noise information can be used for site measurements. 2, Kismet. A ke

1.1 Scene Description 1.1.1 Learning Purposes By learning, you can independently complete all the common technologies involved in the entire enterprise network. 1.1.2 Learning Requirements Master: Configure the security management of network equipment. Master: Configure access control lists. Master: Configure secure routing

Most campus networks have become part of the Internet. The Internet is no longer free to use, making campus network security especially important. Here I will discuss the following issues: ○ Why is the Internet insecure? Network System Security Management Measures ○ Network

of the network, the flow of data, and the information transmitted over the network. If the information is transmitted over the network in clear text, then the network listener can be used to sniff and obtain the packet. Network sniffer device or

because its hardware and operating system for packet filtering and state checking, using a dedicated chip for IP address and port number of fast matching and design, If a firewall is required to assemble a packet of network-layer packets and extract the application layer data, then the complex pattern matching can not achieve satisfactory performance. In fact, most of the firewalls currently being used by users are only checked at the

application interfaces and protocols. It is well known that the lower-level structure provides a broad set of important services: socket and connection management, request and response processing, various security policies, caching and many more enforcement measures. Whenever you initialize an HTTP request or XMLHttpRequest, a persistent service push event or WebSocket session or open a WebRTC connection,

Users who use the broadband access network will encounter many problems, especially regarding security. Here we will introduce the solution to the security problem of the broadband access network, and share it with you here. In the past 10 years, broadband access networks have been booming around the world. More and mo

/nsg/template/___index.php","w");fwrite($fp,$index);fclose($fp);require_once("/usr/hddocs/nsg/head_index.php");require_once("/usr/hddocs/nsg/template/___index.php");} The file address written to is template/___index.php.Proof of vulnerability:The equipment of the network God Technology Code Area 网神POST /preview.php HTTP/1.1Host: **.**.**.**:8443User-Agent: Mozilla/5.0 (Windows NT 6.3; rv:39.0) Gecko/20100101 Firefox/39.0Accept: text/

1 Introduction With the enlargement of the scale of university running, the new (sub) campus spread to the wireless network construction and management put forward higher requirements. VPN technology can not only build a unified wireless network management platform, but also improve the security of wireless campus network