protocol number

Reference: RFC 3768 1. Preface VRRP (Virtual Router redundancy Protocol) protocol is used to implement router redundancy protocol, the latest protocol is defined in RFC3768, the original definition RFC2338 was abolished, the new protocol is

? ? After the previous study, the use of tcpdump believe should be mastered, today we come to learn about tcpdump output content of learning and understanding. Let's take the first example to illustrate the following:IP Protocol Packet

Linux Basic Network Command listOrganize the list of common network commands under Linux for quick access.Connectivity ofPing : Sends an ICMP echo message (a packet) to the host. This may continue to be sent until you press CONTROL-C. Ping means

PHP/* * * PHP options and information that affect PHP behavior * assert_options-set/Get various flags for assertions assert-Check if an assertion is Falsecli_get_process_title-returns t The He current process titlecli_set_process_title-sets the

In history, multicasting has become more fashionable. IP multicast means that a sender sends data to multiple recipients, but only one copy of the data is required. Multicast is very useful for streaming media, so let's take a look at its working

Start the interface and assign an IP Address: routerrouterenablerouter # router # configureterminalrouter (config) # router (config) # interfaceTypePortrouter (config-if) # noshutdownrouter (config-if) # ipaddressIP-AddressSubnet-Maskrouter

It is very useful to know some basic configuration statements about Cisco routers. The configuration can ensure the security and performance of our networks. Here we mainly analyze the basic configuration statements of Cisco routers. Cisco router

Linux Network overview-general Linux technology-Linux technology and application information. For more information, see the following section. I started to pay attention to my blog and thought it was not good enough. But to get started, upload it

Vropat PAT sets the virtual server option to allow Internet users to access services on your LAN. This feature is useful for providing online services such as FTP, Web, or game servers. For each virtual server, you define a public port on the router

Vro/vswitch flow debugging commandNetflow VerificationShow ip flow interfaceShow ip flow exportShow ip cache flowShow ip cache verbose flowClear ip flow statsDebug ip flow exportWww.2cto.comShow ip cache flowRouter # show ip cache flowPercentage of

With the depletion of IPv4 addresses, IPv6 is necessary for application. However, most networks around the world are still using IPv4, so the transition from IPv6 to IPv4 must be gradual, which is a relatively slow process, in this case, we need to

This article lists the basic configurations and common configuration commands of Cisco routers in detail for actual operation problems. I believe this article will help you. Start the interface and assign an IP Address:Router>Router> enableRouter

Firewall Technology In ancient times, people often build a brick wall between apartments. Once a fire occurs, it can prevent the fire from spreading. Extend to another apartment. Naturally, such a wall is named "firewall ". Now, if a network

1. What is status detection?Each network connection includes the following information: Source Address, Destination Address, source port, and destination port, called socket pairs, protocol type, connection status (TCP protocol), and timeout time.

Bkjia.com exclusive Article]I. Scope of network traffic management Over the past decade, the Internet has become an increasingly important demand. According to statistics, the Internet has become the most important information infrastructure in

With the rapid development of computer network technology, network security issues have become increasingly prominent in the face of various users. According to the data obtained by the author, nearly 20% of users on the Internet have suffered from

Original address: http://www.cnblogs.com/mylove103104/p/4600779.htmlOne, what is cross-domainLet's review the composition of the domain name address:http://www. Google:8080/script/jquery.js/HTTP (Protocol number)www (sub-domain)Google (primary

checkdnsrr-DNS traffic checks for the specified host (domain name) or IP addresscloselog-Turn off System log linksdefine_syslog_variables-Initialize all syslog-related variablesDNS_CHECK_RECORD-CHECKDNSRR aliasesDNS_GET_MX-GETMXRR

Ips bypass posture0x00 background Previously, wooyun often saw some bypass methods, such as the Anti-injection function of the bypass web program using the features of mysql, and the direct construction of bypass anti-injection regular expressions.

Source: China Security Information Network With the rapid development of computer network technology, network security issues have become increasingly prominent in the face of various users. According to the data obtained by the author, nearly 20%