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  • Cisco
    • CCNP
      • chapter 1 Dynamic Multi-point VPN (DMVPN CCNP)
      • Automate Jobs on Cisco Device
      • Routing and TCP/IP operation review (ICMP redirect,RIPng)
      • EIGRP 1 (CCNP – Timer, Neighborship, Bandwidth, Metric, Topology Table)
      • EIGRP 2 (CCNP – Load balancing,convergency, SIA, route filtering, summary, Default route)
      • OSPF (CCNP – neighborship, virtual link, LSA)
      • OSPF (CCNP – Route filtering, summarization, stub area, ospfv3)
      • Route redistribution
      • Route Selection (Policy based routing (PBR), SLA ,VRF)
      • BGP Basics
      • BGP advanced
      • IPv6 Internet Connectivity
      • Router and routing security
      • Route-maps (Cisco)
    • GNS
      • How to build switch image and configure switch in GNS 3
      • Add router image to the GNS3
      • Connect Virtual Machine to Internet Via GNS3
    • CCNA
      • Access Control List Part1
      • Access control list Part2
      • Cisco IOS fundamental
      • First Hop Redundancy Protocols (FHRP)
      • Actual usage of bandwidth
      • NAT (CCNA)
      • IP virtual-reassembly
      • Default route in 3 ways
      • DR and BDR
      • Where do resets come from?
      • EIGRP
      • Spanning Tree Protocol(STP)
      • Configure EIGRP
      • EIGRP-Advanced Configuration and troubleshooting
      • Configure Frame Relay Switch
      • How to connect to T1 line.
      • Hierarchical Network Design
      • Hardware, ISO images and licensing
      • Link Aggregation
      • Multiarea OSPF
      • Multi-area OSPF summary-address VS area range
      • NTP in Cisco IOS
      • OSPF network types
      • RSTP and PVST (per VLAN Spanning Tree)
      • RIP
      • Switch port speed and security
      • Single Area OSPF configuration
      • Install SDM in a router or GNS3
      • Wireless basic
      • Wireless Operation and Configuration
      • Connecting to WAN
      • Reset switch
    • Cisco Voice
      • Give Google map iframe grayscale
      • Cisco CME config
  • Database
    • Database System -Design, management
      • Chapter1 Database systems
      • Chapter 3 Relational Database Model
      • Chapter4 Entity relationship modeling
      • Chapter 6 Normalization of database
      • Chapter7 Introduction to SQL
      • chapter 8 advanced SQL
      • chapter 15 Database and Internet
    • Mysql
      • Chapter 1 Mysql Basic
      • MYSQL SERVER ON CENTOS
      • Chapter 2 Writing Mysql Based Programe
  • Microsoft
    • Windows Fundamental
      • Accurate time on Windows Environment (NTP)
      • Restart pending issue in Windows
      • Veeam Setup storage repository from Network share
      • Acronis backup
      • Solve PC automatically reboot
      • Volume Activiate client machines
      • Windows System Reserved and EFI Partition
      • Differential backup and Incremental backup
      • Direct attached Storage (DAS)
      • DISM++
      • Notepad++
      • Apply Updates to an Image Using DISM (Standard 7 SP1)
      • Fix annother installation is currently in progress.
      • Fix the Windows Icon showing blank
      • windows 7 accumulative update
      • 7 zip
      • Browser Protocol
      • Computer Accounts
      • Command shortcut to Microsoft settings
      • iTunes can not open in windows 7
      • Windows indexing issue
      • windows 10 – choose the version for installation
      • windows 10 printing issue, internet issue
      • Windows useful commands
      • Creating a SQL Server 2012 Account
      • command without path
      • Could not connect to network drive after reboot
      • DHCP in Windows Server
      • Enable Network Level Authentication on XP machines
      • Default gateway been set to 0.0.0.0
      • %Windir% and %systemRoot%
      • Windows Permission
      • windows proxy setting netsh winhttp
      • God mode
      • Hardware
      • Windows Reliability Monitor
      • Advanced Search in Windows
      • command line scripting
      • IP address already assigned to another adapter (1179)
      • script the MySQL backup on windows
      • Disable Get windows 10 status tray Icon
      • Windows 7 Sp1 language pack
      • Windows 7 SP1 Windows update stuck checking for updates
      • windows logs
      • local built-in administrator account has been disabled
      • Visual C++ 2005/2008 failed
      • MMC
      • Ping
      • Processor (% Processor Time) and Process (%Processor Time) in Data Collector Set
      • Power management
      • Clear the Printer Queue (printer Spool)
      • popular free softwares (free tools)
      • Rename a domain controller using Netdom
      • SC ( Service controller)
      • Run program with high privilege
      • Enable routing or disable it
      • Registry command
      • Service Controller and installed services
      • Script for cleaning rubbish file before shutdown
      • Send Emails From The Windows Task Scheduler
      • Start program on computer startup when nobody is logged on and show the window when someone does log on (OS: Windows)
      • Synology Versioning take too much space
      • SSD for computer
      • SMB versions
      • symbolic file and hardlink file
      • shortcut for network location(NAS, etc) disappear
      • User account and Group
        • Roaming Profile problems
      • Task management in Windows (Tasklist, Taskkill)
      • Synchronize Time with a DC
      • Configure Windows firewall for VPN
      • Disable UAC from registry
      • Version number of Windows OS
      • xp 删除正版验证
    • 70-411 Administering Win 2012/R2
      • 70411 Chapter 7 DC and AD management
      • Configuration Passes (Windows Setup)
      • chapter 8 User and Service account configuration
      • 70411-Chapter 5 Remote access Configuration
      • chapter 9 Goup policy settings and prefercences
      • Chapter 10 Managing Group policies
      • chapter 11 DNS and DNSSEC
      • Chapter6 Network Policy
      • Deploy prestaged Device and unattended installation
    • Windows Server
      • App blocked by Administrator
      • Azure Hybrid Cloud Print
      • Deploy Certificate from MS Enterprise CA Via SCEP profile
      • MS MDT with Intune AutoPilot
      • shadow copy (previous version) on shared folders
      • Bluescreen Troubleshooting
      • Deploy Network Driver for Intel Ethernet NIC
      • DHCP vendor class, Policies
      • Windows Deploying Services (WDS)
      • Chapter4 Remote desktop service Part1
      • Chapter 5 Remote desktop service Part2
      • File services 2 – ACCESS BASED ENUMERATION(ABE), DFS by Powershell, Indexing
      • use synology NAS to create SAN storage
      • Allowed to Authenticate permission
      • Active Directory DC promo Prerequisites check
      • Manage Hyper-V in a workgroup remotely
      • Basic configuration
      • Windows server install error 0x80070570
      • Client backup on Windows 2012 Essential
      • Chapter 10 Federation Services
      • CHapter 10 High Availability
      • Deploy Domain Controllers
        • Cloning domain controller
      • DHCP server
      • MDT
      • Monitor the validity period of A Certificate with MDT
      • DNS and DNS server
        • DNS service unavailable cause logon problem
      • Chapter 5 Active Directory Administration
      • Install .net Framework 3.5 on windows 2012
      • Features on Demand with Updated Systems and Patched Images
      • File Service 1 – DFS, FAULT TOLERANCE AND LOADING BALANCE, FILE SERVER RESOURCE MANAGER(FSRM) , Classification
        • DFS Namespace Cannot Be Queried Error (the namespace cannot be queried. the rpc server is unavailable) – Remove & Delete Orphaned Namespace
        • Filesystem Security
        • Missing file in DFS replication
        • FreeFileSync – Windows Powerful free file synchronization tool
      • new in winServer2016(Storage replica, 2-node hyperconverged cluster)
      • Physical machine to Hyper-V Migration
      • Slow or endless login to Terminal Server (TS)
      • L2TP/IPSec VPN dropped silently
      • Multi-site Active Directory Environment
      • Monitor and troubleshooting server
      • Media Server in Windows 2012
      • Migrate local user’s profile to Domain User
      • Printer and Print services
      • Configure windows 2012 as router
      • Remote managing server which is in workgroup
      • Transfering FSMO role to another DC
      • Transition to Windows Server 2012 Standard
      • WDS on Windows 2012 (R2)
      • Upgrade domain and forest Functional level
      • Windows firewall IPsec
      • WSUS Windows server update services
      • Winsxs folder
    • Exchange Server
      • Enable DKIM on office 365
      • Installation1 – Prepare Active Directory and domains Exchange 2013
      • Installation2 -Exchange 2013 prerequisites
      • Archive in Outlook
      • Chapter 1. Exchange Fundamentals
      • Install and Access Exchange 2013 admin center for the first time
      • Database provisioning on Exchange
      • Email Forwarding setting in Exchange Via PowerShell
      • Chapter 14 Managing Mailboxes and mailbox content
      • Manging mail-enabled group, Users and Contacts
      • Outlook Data Files (.pst and .ost)
      • Exchange daily administration jobs
      • MailBox size report for Exchange 2010, 2013, 2016, office365
      • Chapter 19 Exchange Database and Log
      • Exchange security group
      • Exchange -Can not send email to external domain users – #550 4.4.7 QUEUE.Expired
    • MCTS_70-643 Win2k8 Application Infrastructure
      • Create Named Instance in SQL Server 2008 R2
      • Cha6 Configuring WebServices Part1
        • FTP server with domain user
      • Chapter 7 Web Services Part 2
      • Chapter 8 Configure windows Server 2008 network application Services(Media,SharePoint)
      • IIS_monitor_AWstats
      • chapter 9 configure Hyper-V virtualization
      • Share point incoming email part 1
      • sharepoint incoming email part2
    • Active Directory basic
      • subdomain, Single-domain or multi-domain
      • Domain service (DS) commands (DSquery, Dsget)
      • Operation master Roles – flexible single master operations(FSMO)
      • LDAP
      • Manually Sync the AD to Azure
    • PowerShell and Batch scripting
      • Analyze with Foldersize and handle the files in the result
      • Install Feature or Role by Powershell
      • chapter 1 introducing Powershell
      • Powershell Basic examples
      • 25 Common entries
      • Wildcard operator in Powershell (match, like, contain)
      • Chapter 4 Script fundamental
      • Delete old files by Batch script
      • Deploy software via Batch script
      • Work on Disks
      • Chapter 5 Variable, function
      • DSC Desired State Configuration
      • Work with mail
      • Chapter 6 Advanced Function and Modules
      • Find files that not been accessed for a while by powershell
      • Configure the firewall
      • Chapter 8 Windows Powershell ISE
      • powershell backup hyperV
      • Remote Management by command(CMD PS)
      • Chapter 9 Powershell Profiles
      • chapter 10 Use WMI
      • Convert JSON data to html in Powershell (manageengine Servicedesk plus ticket monitoring)
      • chapter 11 Querying WMI
      • Chapter 12. Remoting WMI in Powershell
      • Check if a user is a member of the Local admin group
      • Find Logon Session
      • Chapter 13 Call WMI methods on WMI classes
      • Chapter 13 Using CIM cmdlets
      • chapter 15 Working with active Directory (OU, users)
      • EXPORT/Import domain USERS/COMPUTER LIST to/from CSV file
      • Promote AD domain controller via Powershell
      • Working with Passwords, Secure Strings and credentials in Windows Powershell
      • Schedule powershell scripts
    • Group Policy
      • ADMX central store
      • manage web explorer(firefox, chrome) via GPO (proxy, settings)
      • Windows proxy Setting – GPO ( Per user, Per computer)
      • Advanced Security Audit Policy
      • AppLocker SRP
      • Group policy Client Side Extensions
      • Deploy DotNet Via GPO
      • Disappearing folder redirection
      • Modify Registry
      • Deploy Adobe Flash with GPO
      • Folder redirection
      • Group policy basic
      • Manage File association from GPO
      • Google chrome deployment over group policy
      • Group policy and UAC
      • Group Policy example and problems
      • Kerberos Policy
      • “Log On as a service” previledge
      • Deploy Java
      • Change the keyboard layout in login screen
      • Management Console icons reference
      • Network connection setting
      • Preferences
      • Deploy software via Group policy (Adobe Reader DC) and update it
      • Removal of Microsoft Security Essentials through Group Policy
      • Troubleshooting
    • 70-412 Configure Advanced WinServer 2012/R2
      • Chapter 3 Advanced DHCP and DNS configuration
      • configuring and maintaining AD infrastructure 1 (adding, removing domain;migration;Trust;UPN;SID filtering)
      • configuring and maintaining AD infrastructure 2 (Replication, SRV record registration, move DC, Folders of AD)
      • Chapter 4 Configure Advanced FIle Services (BRANCHCACHE, FILE CLASSIFICATION, Audit, NFS, ISCSI , deduplication)
      • Chapter 5 Dynamic Access Control (DAC)
      • Chpater 6 Server High Availability
      • Chapter 7 High Availability II
      • Chapter 8 Backup Windows Server and Site Disaster Recovery
      • Chapter 9 MS Certificate Service
      • chapter 10 Active Directory Rights Management Service (RMS)
    • Local Administrator Password Solution (LAPS)
    • Office
      • excel 套用表格格式”之后就无法合并单元格
      • Open Word excel files in separate windows (office 2007, office 2010)
      • Office Document Cache has stopped working
      • split text into different columns ( rows)
      • Enroll your mobile device to O365 MDM
      • Deploy Office 365 from local source
      • Proxy Server in Office 2013
      • Wipe a mobile device in Office 365
    • laptop,desktop fixing journal
      • corel Draw 應用程式復原管理員
      • ASUS X301A install system.
      • Port conflict
      • Netgear AC1200 Wifi Range Extender
    • System Center Configuration Manager(SCCM)
      • Boot image for SCCM
      • deploy exe file
      • Windows ESD image to WIM image
      • Deploy Windows system with SCCM
      • SCCM setup
    • System Internal tools
    • WMI Infrastructure
      • Security Descriptor object
  • Web technology
    • FTP chroot on VirtualMin
    • PHP
      • Super global Variables $_session, $_SERVER
      • Install APM apache, php and mysql on MAC OSx
      • set the root password for Mysql phpmyadmin
      • Multiple PHP version for apache on CentOS 7
    • CSS basic
      • change the cart icon on Woocommerce
      • CSS minify Unminify
      • Style phone number
    • WordPress
      • Remove the side bar from WooCommerce
      • WordPress Plugins
      • WordPress Widget Logic
      • Enable Zoom for mobile
      • MasterPost_SocialMediaIcnos
      • wordPress ” Error establishing a database connection “
      • Add child pages list in the parent page
      • WordPress asking for FTP credentials
      • WordPress system widges
      • Disable comment completely
      • Page List Plugin
      • Embed other webpage into wordpress
      • WordPress migration
      • Show the level of pages When Choosing Parent Attribute
      • Permalink “post name” cause 404 error – Only Plain works
      • Style the editor to the same style as it published
      • Style Search Result
      • Alter the footer info for theme
      • WordPress shortcut
      • WordPress – Change the pages’ parent in bulk
    • SEO basic
      • Concept (IP PV)
      • SEO
      • Bing disavow links (block some unwanted pages)
      • Google search for your website
      • Create and submit Sitemap
    • Git with bitbucket or GitHub
    • XML document
    • Introduction to http cache (From a Chinese blog)
    • Proxy Server
      • Integrate Squid with AD
      • Nginx as Reverse proxy for Apache Server farm on CentOS 8
      • Apache work as Reverse Proxy
      • Proxy server squid
      • Proxy setting on Windows
    • Python
      • Autoadmin Chapter 1 System basic info modules (psutil,IPY,DNSPYTHON)
      • Autoadmin chapter 5 Workwith paramiko
      • AutoAdmin chapter 9 Ansible with Python
      • AutoAdmin Chapter4 Python and security
      • chapter 1 set up developing env (eclipse+pydev)
      • AutoAdmin – Chapter3 Generate report with Excel format (xlsx writer), rrdtool, routing graph
      • AutoAdmin – Chapter 2 File and service monitor (difflib, filecmp, smtplib, pycurl)
      • chapter 2 Py Ingredients( number, strings, and variable)
      • Chapter 3 Basic (lists, tuples, dict, sets)
        • list
      • chapter 4 Code structure( Function, generator, decorator )
        • Enumerate function
        • Stack
      • chapter 5. Module, Packages, and Programs
      • chapter 6 objects and classes
      • chapter 7: mangle data ( encode, decode, format)
        • Endian (Big and little )
      • chapter 8 Work with file
      • Chapter 8.2 work with Database
      • chapter 9 The web
      • chapter 10 systems
      • chapter11 Concurrency and network
      • Python-Automating Administration
      • Virtual environment
      • VIM and Python – a Match Made in Heaven
      • Web crawler by Python
  • Linux
    • Ansible
      • Chapter 1 Introduction
      • Chapter 2. Playbook and YAML file
      • Ansible with Networking
      • Chapter3 Inventory
      • Chapter 4. Variables and Facts
      • setup ansible ubuntu
      • Control windows Servers
    • Ubuntu
      • change the startup color in ubuntu
      • Add stardict into Ubuntu Kali
      • Mount the NTFS drive in Linux from booting
      • Public key is not available(No_pubkey)
      • Show error while open the system settings in Ubuntu 14.04LTS
      • Uninstal bluetooth
      • Ubuntu update
    • Drupal installation
    • Basic
      • Backup LAMP (Website file and database) with script and crontab
      • Extract compressed files
      • High CPU usage and high disk usage by sendmail
      • Start Xampp
      • Bash script _ If statement
      • Bash script_ Loop
      • Bash Script_Fuctions
      • BashScript_User interface
      • Bash Script to manage files on FTP server
      • Compression, system backup, software installation
      • Bash Scripting – chapter1 Variable, input
      • Dig (Domain Information Groper)
      • Exim and Devecot for Email infrastructure
      • Linux kernel
      • Fix the linux font problem
      • FTP – chroot
      • Web server response codes to messages
      • Deploy server
      • Device Filesystem administration
      • Install dependency automatically in Debian
      • De-fragmenting in Linux
      • Install LAMP ( Linux, Apache, Mysql (MariDB) , PHP)
      • Linux system config
      • Work on Linux File system
      • Linux Filesystem
      • Postfix
      • Postfix with sasl
      • WebServer Pressure Test( Jmeter)
      • chapter 7 work with Shell (bash)
      • Regular Expressions Basic
      • Regular-expression advanced
      • Transparently redirect root folder to a sub folder
      • savapage (Paper Cut Alternative)
      • Secure Copy protocol
      • Selinux
      • SendMail Config
      • python pexpect with TCL script
      • Chapter 12 network configuration and operation
        • 18 commands to monitor network bandwidth on Linux server
        • wget and curl
      • ufw blocking FIN, RST and ACK packets when rules should allow it.
      • UTF-7 decoding problem with Java
      • chapter 13 configure network service
        • Reset Root password for MySQL
        • Optemizing Apache and Mysql
      • Install and configure NGINX server
      • Linux Process managing
      • Linux Printer and Log File
      • System initialization and X window
      • systemd-sysctl.service – Apply Kernel Variables
      • Reset Linux Root password
      • Text editor (VI / VIM)
      • chapter 14 Troubleshooting, Performance and security
      • chapter 10 user and groups
      • wildcard
    • MAC
      • Add a static route in MAC
      • Boot into other OS via Refind
      • Useful command in MAC
      • 常用MAC软件
      • Basic key combo
      • Connect to SMB & NAS share from MAC OS
      • File system
      • Enable NTFS in MAC
      • System Integrity Protection on a Mac
      • Security penetration test on MAC
      • Mac Safe Mode
      • MAC Printer problem
      • Create a Service in MAC Sierra and give it a shortcut
      • “Please install zlib and zlib-devel packages” error
    • Fedora
      • Configuring a DHCP Server
      • Application Installation
      • X server not responding, improving boot speed
      • FTP in fedora
      • Find the package name according to missing library in CentOS
      • NFS on fedora
      • Can browse webpage by browser but can not use yum update
      • Basic settings
      • Samba server in Fedora or CentOS
    • Linux IP table editor – UFW
  • Networking
    • Administrating your G-Suite with CLI GAM
    • Wireshark
      • chapter 1 Basic (Filter, Output)
      • Wireshark packet analyse – Layer by Layer
      • WireShark_password sniffing
      • Wireshark CLI
      • Analyses EIGRP message by wireshark
      • Chapter 5 Expert system and TCP/IP analysis
      • Chapter 6 DNS and ARP analysis
      • Chapter 7 Wireshark IP ICMP UDP
      • chapter 8 Analyze TCP , DHCP with Wireshark
      • chapter 9 wireshark HTTP,FTP, Email
      • chapter 10 Wireless, VOIP, Traffic Baselining
      • Install wireshark in Linux
      • Non-root User get the permission to capture traffic
      • Sniffing Usernames, Passwords, and Web Pages
      • Stream analysis
      • TCPdump
    • AWS cli -S3
    • Networking fundamental
      • AAA protocols
      • Broadband solution
      • DHCP OPTION 43 Configuration Example
      • HOW TO CLEAR THE LOCAL DNS CACHE
      • Carrier Ethernet and MPLS
      • Dynamic routing
      • DHCP
      • Cisco, HuaWei, h3c command mapping table
      • Datalink layer
      • digital transmission
      • Directed broadcast address and Local broadcast address
      • Java connection issue for port less than 1024
      • Ethernet
      • FTP commands
      • Frame Relay
      • IP address
      • netstat command
      • HDLC and PPP
      • Proxy ARP
      • IPv4 vs IPv6
      • Inter-VLAN routing
      • Internet connection issue troubleshooting steps
      • How to prevent your email from been marked as spam
      • Medium access control(Collision detect)
      • nslookup
      • TCP：三次握手、四次握手、backlog及其他
      • MTU MSU
      • Manchester Coding Basic
      • Metric prefix
      • Network Layer
      • 运维工程师
      • Port forwarding or Port mapping
      • Point to Point Connections basic
      • Physical layer
      • Routing basic
      • Routing table
      • Router
      • Routing table and topology table in EIGRP or OSPF
      • Standard orgnizations
      • Route command
      • SNMP protocol
      • Static routing
      • Single area OSPF
      • Transport Layer
      • TCP functional Specification
      • Troubleshoot PPP
      • Secure Site-to-site connection ( VPN,GRE,IPsec)
        • IPsec (CCNA)
      • Troubleshooting Network
      • DHCP UDP Ports 67 and 68
      • VLAN
      • Wireless network
      • WAN technologies Layer 1 technologies
      • WAN technologies Layer 2 technologies
    • JNAA-JNCIA-Junos-Junosphere
      • JunOS, Limiting output
      • Junos OS fundamental
      • User interface
      • Configuration2
      • configure exclusive Command
    • ELK stack for logging
      • Kibana
    • Network Storage
      • Dell Compellent
      • Nexenta and Dell Compellent
    • install FTP (VSFTPD)
    • Networking labs
      • lab-InterVlan routing
      • Use GNS3 to observe DHCP process
      • Query data from mysql by php
      • Web server and ACL
      • GNS conflict with XAMPP
      • VLAN trunk (lab)
      • DC replication problem
      • Change the UUID of virtual hard disk in Virtual box
      • FrameRelay Lab
      • GRE lab
      • Migrate a DC to another site
      • The request is not supported error when joining domain
      • VM cannot take ownership
      • ICND2 VTP GNS3 Configuration LAB
    • Nagio Core monitoring Setup
      • nagios Configuration file
      • nagios on cloud
      • Use nagios and MRTG to monitor the Cisco Interface usage
      • monitor Esxi with Nagios
      • set up nagios email notification
      • Nagios Addons ( Check_mk, pnp4Nagios, Nagvis )
      • Nagios core monitor basic
      • Monitoring public area service
      • schedule downtime
      • Nagios User
    • Rclone
    • Unison File Synchronizer (network or local)
    • Monitor Network (Syslog, SNMP, net flow)
      • Network Flow and Flexible netflow
      • SNMP (CCNA4, security)
      • Graylog 2
    • TCL scripting
    • VMware
      • Install Openmanage on VMware Esxi / Windows
      • Services and Network
      • VMware fusion config
    • Wireless (CWNA)
      • D-Link Wireless Controller and access point Setup
      • chapter 2 Wireless LAN
      • Chapter 5 Physical Layer standards
      • Chapter 6 MAC layer-Wireless
      • Chapter 10 Implementing WIreless LAN security
      • Configure Guest WLAN with captive portal on Motorola WiNG 5.8
      • Chapter 11 Manage VLAN
      • chapter 12 Troubleshooting and optimization
      • Wireless LAN controller
      • chapter 13 Other wireless networks
      • Ubiquiti – use Centos as Unifi controller
  • Security
    • Integrate Certbot to 3CX on Debian
    • Detecting Live systems and analysing results
    • Enumerating Systems
    • CCNA Security
      • chapter1 Modern Network Security Threats
      • chapter 2 Securing Cisco Network Devices
      • chapter 2 Securing Cisco Network DevicesPart2
      • chapter 2 Securing Cisco Network DevicesPart3 (Cisco autosecure and Securing the control plan)
      • chapter3 AAA in cisco Device
      • chapter3 part 2Configure AAA server-based authorization and accounting
      • chapter 4 Firewall
      • Chapter5 Implement IPS_introduction
      • chapter5 Implement IPS2_configuration
      • Chapter 6 Secure The LAN
      • Chapter 7 Cryptographic System
      • chapter 8 VPN (IKE, IPsec)
      • Chapter 9 Cisco Adaptive Security Appliance 1(Models, License, Basic)
      • Chapter 9 Cisco Adaptive Security Appliance 2(ACL, NAT, AAA)
      • chapter 10 Advanced ASA ( ASDM )- GUI of ASA
      • chapter 11 Managing a secure Network
      • Set up ASA lab
    • IDS
      • Snort – Basic
      • IPBAN – Windows
      • How to Detect NMAP Scan Using Snort
      • Snort – Installation
    • Security labs
      • MSF-metasploitable
      • metasploitable user manual
      • Make a one-way data (RJ45) cable
    • Kali
      • Kali repository
      • Add chinese input pinyin wubi
      • Burp Suite and Hydra
        • Creating a request file by burp suite
      • hashcat
      • Iceweasel can not play youtube
      • Menu in applications is missing
      • MSF
      • OpenVas
        • Openvas setup error
      • Python 环境下的网络数据监听和过滤
      • shut down or reboot error
    • NMAP
      • hping usage
      • Nmap NSE scripts with examples
    • Security Basic
      • Block IP addresses by Country in 3CX
      • ARP CACHE POISONING / ARP SPOOFING
      • Step1 Information gathering
      • Encryption and Tunneling Techniques
      • DTP vulnerability attack and VLAN hopping attack
      • Fiddler
      • Deploy HTTPS on Apache/Tomcat in CentOS
      • Fping
      • 中文 注入 攻击软件。
      • Parent control Web Sec
      • Popular website for security pros
      • URL needs to be blocked
      • Sign a Certificate in Microsoft windows server
      • Snort dnet header error
      • SPF record
      • Use Openssl as CA to create Key and certificate
      • 黑客技能表v3.0
      • Cisco WLAN controller password cracking
      • Process of an attack
      • User Agent Strings
      • Session Hijacking
      • 5 Steps Wifi Hacking – Cracking WPA2 Password
      • How to Hack targeted website(Basic)?
      • Website attack basic Knowledge
    • Symantec Endpoint
    • SoftEther VPN
      • SoftEther VPN-configure
    • SQLmap
      • MySQL 注入技巧
      • SQLmap (advanced)
      • SQLMap tutorial 1
      • SQLMAP-tamper-scripts explaination
      • SQLMap User Manual
    • Windows Security
      • Logon auditing

Nagios Addons ( Check_mk, pnp4Nagios, Nagvis )

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  • Nagios Addons ( Check_mk, pnp4Nagios, Nagvis )

Nagios 4 (core) + Check_mk + pnp4Nagios + Nagvis

CIDR calculator

Type a network address with mask length to find the subnet mask, network info (available IPs, first IP, last IP, etc)


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