port protocol

--dport 8080-j ACCEPT★ The number 8080 stands for open 8080 ports, can also be changed to other ports ★③ Restart the firewall================================================================Save settings for the firewallSerivce iptables SaveView Iptables rules and numbersIPTABLES-NL--line-numberTurn off all input FORWARD (forwards) output for all portsIptables-p INPUT DROPIptables-p FORWARD DROPIptables-p OUTPUT DROPOpen only 22 portsIptables-a input-p TCP--dport 22-j ACCEPTIptables-a output-p TC

The difference between the UDP protocol and the TCP protocol is no longer analyzed, mainly to analyze how these two protocols are used in Java communication programming.First introduces TCP, which provides good support for the Tcp,java language. To establish TCP communication, you need to build the server first andTo the server's IP and port number.Socket class u

OverviewBoth TCP and UDP use the same network-layer IP, but unlike UDP, TCP is a connection-oriented, reliable byte-stream protocol. Therefore, both parties must establish a TCP connection before transmitting the data. TCP realizes the transmission of reliability through the mechanism of verification, serial number, acknowledgment response, retransmission mechanism, Connection management and window control.TCP provides reliability in the following way

[Rt1] IP route-static 4.4.4.4 32 1.1.1.2 [Rt2] IP route-static 3.3.3.3 32 2.2.2.2 650) This. width = 650; "src =" http://home.51cto.com/thumb.php? W = 120 H = 100 t = F url = http://s3.51cto.com/wyfs02/M00/4D/36/wKiom1RNzSWj50mlAAFmrdFsOes484.jpg "width =" 120 "Height =" 43 "alt =" wkiom1rnzswj50mlaafmrdfsoes484.jpg "/> Summary: The link protocol supported by the S port is P

AJP13 is the directional package protocol. For performance reasons, the binary format is used to transmit readability text. The Web server is connected through a TCP connection and a servlet container. To reduce the cost of process generation sockets, the Web server and the servlet container try to maintain a persistent TCP connection and reuse a connection for multiple request/reply loops. Once a connection is assigned to a specific request, it is no

Opening remarks: I personally think that the entire SAS protocol family is large, and there are many concepts that are hard to understand. I can only study the actual code at work while reading the protocol in detail. In this way, we can better understand the SAS protocol. It is the best way to understand the protocol

The web point-to-point program transmits data, is the HTTP protocol or TCP/IP protocol TCP/IP protocol and HTTP protocol what is the difference, two Web program point-to-point transmission data, you will choose that one. Today on the Internet to see such an interview topic, triggered a series of search data, review

) Execute the following command to register the Oracle client's Oracle OLE driver, such as the native directory as followsregsvr32 E:\app32\Administrator\product\11.2.0\dbhome_1\BIN\OraOLEDB11.dllThis completes the registration,Note:Since this involves only powerdesigner connecting Oracle for reverse engineering, the operation on Plsql is not within the scope of processing.Question three:Complete the above two issues, re-execute PowerDesigner reverse engineering, connect to remote Oracle, contin

Brief introductionHypertext Transfer Protocol (hypertext Transfer Protocol, referred to as HTTP) is the application layer protocol. HTTP is a request/response protocol that sends a request to the server after a client has established a connection with the server, and responds to the request after the server has receive

Markup Language HTML is used to extract display documents1.1 HTTP Operation Process1.2 Users click on a page of Firefox browser to trigger the event browser analysis link to the URL of the page to the DNS request resolution URL for the IP address domain Name System resolves the IP address of the browser and the server to establish a TCP connection (server-side port is 80) The browser issued a get file command The server responds to the GET request an

Enable port in CentOS7 and enable port in CentOS7Enable Port:Firewall-cmd -- zone = public -- add-port = 80/tcp -- permanentCommand description:-- Zone # Scope-- Add-port = 80/tcp # add a port in the format of port/communication

Session 1 STPThe STP (Spanning tree Protocol) is the acronym for the Spanning Tree protocol. This protocol can be used to establish a tree topology in the network, eliminate the loop in the network, and can realize path redundancy through certain methods, but it is not certain that path redundancy can be realized. Spanning tree

The UDP protocol is also an unreliable transport protocol compared to TCP. So what is the occasion to use the UDP protocol:1. Efficient and reliable environment2. Because the UDP overhead is small (1) does not need three handshake 2) the transmission process does not need to confirm 3), it is appropriate to communicate in a light-weight environment, such as TFTP,

decoupling, in fact, the imitation is still the traditional type of short-link reverse proxy architecture: Nginx/apache +java/php/python/ruby.The client establishes a connection, and the server side needs to use at least two file handles, with one more layer of paths in the middle. Elegant solutions that can be viewed from the Socket.io. A set of server-side programs, while providing several protocols for terminal selection. In fact, an MQTT broker middleware server can bind multiple ports, a 1

The difference between the WAN port and the LAN port on the router is that most homes use ADSL telephone lines to access the Internet, and there are usually several computers in the home. So how can we make several computers access the Internet at the same time? This requires a Broadband Router. In general, there are several network cable ports on the Broadband Router. Some of these network cable ports are

, allowing the caller to confirm that the media can be received. The message body is as follows sip/2.0 OK via:sip/2.0/udp lab.high-voltage.org:5060;branch=z9hg4bkfw19b ; received=100.101.102.103 To:g. Marconi; tag=a53e42 From:nikola Tesla; tag=76341 Call-id: [emailprotected] cseq:1 INVITE Contact: CONTENT-TYPE:APPLICATION/SDP content-length:155 = from the above SDP message body We can draw the following information= Terminal IP address:200.201.202.203= Media Format:audio=

Now the general family Internet use ADSL telephone line more online, and the home generally have several computers, so how to make a few computers at the same time Internet. This is to use the broadband router, in general, there are several cable sockets on the broadband router, these network cable sockets on some labeled WAN, and some network port labeled LAN, in the end what is the meaning of it. And what difference does it have. Please look down. F

"Redirectport= "8443" debug= "0"Protocol= "ajp/1.3"/>The first connector listens on port 8080 and is responsible for establishing an HTTP connection. This connector is used when accessing a web App for a tomcat server through a browser.The second connector listens on port 8009 and is responsible for establishing connections to other HTTP servers. When you integra

controlled port. 3. SPAN port type Source Port -- SPAN Source port, also known as monitored Port, that is, the controlled port of the monitored Port) The controlled

　　This article is mainly for the access to SVN two protocols to illustrate one is the SVN itself service protocol, one is to run HTTP through Apache Access SVN Protocol SVN protocol access format similar to the followingSvn://192.168.1.34/repos/cottonThe SVN protocol has a certain disadvantage is that only through the