Directory Title Description Grammar format Parameter Description Error condition Notes Bottom layer implementation Example Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Implemented in c language Conclusion Shell command column: Linux Shell command full analysis Description The telnet command is a protocol and tool for logging in remotely to […]
Tag: telnet
How to use telnet, curl, nmap, masscan for information collection
Telnet, curl, nmap, masscan usage parameter information and advantages and disadvantages telnet command format Common parameters of telnet curl command format curl common parameters Interpretation of common parameters of nmap Simple usage of masscan masscan detailed parameters Advantages and disadvantages of telnet, curl, nmap, masscan Advantages and disadvantages of telnet Advantages and disadvantages of curl […]
HCIA-DHCP, FTP, Telnet
Directory DHCP: Advantages of DHCP: How DHCP works DHCP configuration DHCP global address pool case: FTP Introduction to FTP FTP basic configuration Telnet Application Scenarios of Telnet Telnet device configuration Telnet configuration example DHCP: Solve the problem of traditional manual IP configuration, and realize the dynamic allocation of IP addresses. DHCP adopts the C/S mode, […]
Application layer protocols: Telnet and SSH
Article directory 1. Telnet and SSH 1. Telnet protocol 1.1. Definition: 1.2. Working process: 1.3, Telnet’s C/S mode interaction process 1.4, Telnet modify the default port number view port Little knowledge: netstat command usage Linux modifies the default port of ftp, telnet, ssh) 1. Edit the ssh configuration file: 2. Edit the telnet configuration file […]
From 0 to 1: Use Raspberry Pi to build a “simple” Web server 1. Elf process 2. WebServer 3. Debian10 script booting self-starting 4. Local mp4, png and other tests 5. Telnet test 6. Webbench stress test
Table of Contents For the source code, please click on the avatar and then access the resources to download (1) Wizard process 1. fork() creates a child process — the parent process terminates 2. The child process setsid() creates a session — there is no control terminal — small civilian = group leader + president […]
Questions about security scanning vulnerability repair (configure yum source–install telnet–install openssl–install openssh–modify port 22)
Process: configure yum source – install telnet – install openssl – install openssh – modify port 22 (see the specific situation) – close and uninstall telnet 1. Host configuration yum source #Local yum source configuration cd /etc/yum.repos.d/ mkdir baks mv *.repo baks/ vi local.repo #Add the following local yum source [base] name=CentOS-$releasever-Base-local failovermethod=priority baseurl=http://172.168.1.199:18686/software/yum/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever […]
Changing the company’s core router case configuration—1.console initial configuration-2.user configuration-3.telnet login configuration-4.NAT port mapping configuration-5.intranet server configuration-6.link aggregation configuration-7.DHCP and DNS configuration
1. Scene Because the company’s core router is old and its operation is unstable, to replace the old router, the following functions must be implemented on the router. 1. Simulate the initial configuration of the console of the new machine; 2. User configuration; 3. Simulate login configuration via telnet; 4. Interface IP address configuration; 5. […]
Python-Paramiko/Telnet/Serial
Python-Paramiko/Telnet/Serial One: Paramiko 1 Introduction 2 SSHClient class method example 3 SFTPClient class definition method: example Two: Telnet definition: Function introduction Three: serial definition example Link Four: One: Paramiko 1 Introduction Paramiko is a pure Python library based on the SSH2 protocol; Provides client and server functionality; It can realize SSH2 remote secure connection, support […]
Upgrade the OpenSSH version (install telnet remote management host
Directory 1. What is OpenSSH? 2. Upgrade OpenSSH version to 8.9 1. Environment introduction 2. Check if telnet is installed 3. Install telnet service 4. Start the telnet service 5. Close or modify the security file (otherwise root cannot log in via telnet) 6. Install dependent packages 7. Back up the original SSH service version […]
Network security – hydra brute force cracking ftp-telnet-mysql-ssh-http
Directory structure 1. FTP 1. Introduction to FTP: FTP is a TCP-based service only, and does not support UDP (to prevent packet loss). The difference is that FTP uses 2 ports, a data port and a command port (also called a control port). Usually these two ports are 21 (command port) and 20 (data port) […]