Tag：tcp/ip
-
Realize Windows Remote Desktop Ubuntu 18.04 connection in public network environment without public IP, efficient remote office!
Article Catalog I. Remote Desktop Ubuntu on the same LAN 1. Updating the software repository 2. Installation of support packages 3. Installation of the XFCE4 desktop environment 4. Installation of XRDP 5. Environmental settings 5.1 XFCE Desktop Configuration 5.2 In the configuration file, add the XFCE session 6 Restarting services 7. Viewing IP addresses 8. […]
-
Building a Web site on a Raspberry Pi [no public IP needed].
catalogs 1. Overview 2. Install Raspberry Pi OS with Raspberry Pi Imager 3. Setting up the Apache Web server 3.1 Testing the web site 3.2 Installing a static sample site 3.3 Publishing web sites to the public network 3.4 Installing Cpolar 3.5cpolar for token authentication 3.6 Generate cpolar random domain URLs 3.7 Generating cpolar second-level […]
-
Data Link Layer Protocol – Ethernet Protocol
Article Catalog The link layer solves the problemEthernet protocolUnderstanding EthernetEthernet frame formatRecognizing MAC AddressesCompare and contrast understanding of MAC addresses and IP addressesGetting to know MTUImpact of MUT on IP protocolsImpact of MTU on the UDP protocolImpact of MTU on the TCP protocolThe process of transferring data across a network ARP protocolRole of the ARP […]
-
Unable to save ip settings, prompted to check one or more settings and try again.
Some users upgraded their computers to Win11 system, they want to set ip, but they found that they can’t save ip settings please check one or more settings and retry, how do we solve it? Pure Home – win7 pure version system_win7 ghost pure version cure 1, “win + R” shortcut key to open the […]
-
Network Layer Protocol – IP Protocol
Article Catalog IP protocolbasic conceptIP protocol formatSegmentation and AssemblysegmentationSpecial IP addressLimitations on the number of IP addressesPrivate IP address and public IP addressrouting (in computer networks)Routing Table Generation Algorithm IP protocol IP protocol is known as the “Internet Protocol”, IP protocol is the network layer protocol in the TCP/IP system. basic concept Problems solved at […]
-
[Transport Layer] TCP — three handshakes, four waves.
timeout retransmission mechanismConnection Management MechanismhandshakeFour waves.sliding windowcongestion controldelayed responsebring a message to sb.byte stream orientedSticky bag problemTCP anomalyTCP SummaryBased on TCP application layer protocolUnderstanding the second argument to listen timeout retransmission mechanism After host A sends data to B, the data may not reach host B because of network congestion or other reasons;If host A […]
-
TCP Streaming Socket Programming
Article Catalog preamble Comparison of TCP and UDP features TcpEchoServer server-side implementation 1. Create the ServerSocket class to realize the communication between the two sides to establish a connection. 2. Check out the established connection to enable communication between the two parties 3. Server-side business logic realization Close resource Overall server-side code TcpEchoClient Client Implementation […]
-
[Computer Networks] Transport Layer Protocol – TCP
Article Catalog 1. Congestion controlslow startSliding window final sizeWhy is an exponential increase scheme used to design the rate of increase of the corresponding congestion window? 2. Delayed response3. Sticky packages4. TCP exceptions (interview questions)process terminationrebootNetwork cable disconnection 5. Fully connected queues 1. Congestion control All hosts and devices throughout the network adhere to the […]
-
How to proxy MySQL connection with Nginx and limit accessible IPs?
1. Preface Our production environments are basically deployed on cloud servers, such as application servers, MySQL servers and so on. If the MySQL server is directly exposed to the public network, there is a great risk, and the ports of the MySQL server are not open to the public in order to ensure data security. […]
-
[No Public IP Intranet Penetration] Offsite Remote Access to Local SQL Server Database
catalogs 1. Preface 2. Local Installation and Setup of SQL Server 2.1 SQL Server Download 2.2 SQL Server Local Connection Testing 2.3 Cpolar Intranet Penetration Download and Installation 2.3 Cpolar Intranet Penetration Registration 3. Local Web Publishing 3.1 Cpolar Cloud Setup 3.2 Cpolar Local Settings 4. Public network access test 5. Conclusion 1. Preface The […]