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Tools

Own Tools

7/17/2020

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My Online Tools

1. Portainer -http://portainer.51sec.org/
2. Docker - http://docker.51sec.org/
3. Log - https://51sec.loggly.com/
4. Email - https://51sec.org/mail
5. Google Drive Indexer- http://gd.51sec.workers.dev/  non-password https://gd2.51sec.workers.dev/
6. Wiki - https://sec.myxwiki.org/
7. Zabbix - http://zabbix.51sec.org/zabbix
8. Proxy - https://proxy.51sec.org/
9. Nodequery - VPS Monitoring (10 VPS, API supported) - NodeInfo - https://51sec.org/monitor
10. Online Calendar Booking - https://calendly.com/51sec/
11. Bookmarks - https://sites.51sec.org
12. Download - https://download.51sec.workers.dev
13. Aria2 + AriaNG - http://download.51sec.org/ui
14. FileBrowser + Aria2 + AriaNG +Rclone - http://download.51sec.org
14. OneDrive List - FODI - https://51sec.github.io/FODI/front-end/
15. Github - https://github.com/51sec
16. KMS - 132.145.98.41  - key : https://docs.microsoft.com/zh-cn/windows-server/get-started/kmsclientkeys
17. Jira / Confluence / Trello - https://51sec.atlassian.net/
18. WebSSH - http://webssh.51sec.org
19. OneManager - https://od.51sec.org
20. IFTTT - Connets all of your different apps and devices together with a chains of simple conditional statements. I am using Blogger-2-Weebly and Blogger-2-Wordpress two applets to help me updating multiple sites. 

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Collection for Cloud Storage and Downloading Docker

7/17/2020

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Some Cloud storage and downloading dockers.
  • Live Torrent Docker
  • Simple Torrent Docker
  • A Temp File Sharing Site
  • A simple multimedia file server: Gossa
  • FireRun
  • FireRun + AriaNg + Aria2
  • NextCloud + AriaNg + Aria2
  • CCAA - AriaNG + Aria2 + FileBrowser



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Collection for Cyber Security Related Dockers

7/13/2020

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Using Docker to run Cyber Security Tools is becoming more and more popular. Here are some useful Cyber Security related dockers I found online. 
  • HFish - Honeypot
  • OWASP Amass
  • Kali
  • Docker Bench for Security
  • Docker Content Trust
  • KMS
  • Open Source JumpServer
  • Webterminal Bastion Server

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Collection for Interesting Docker Images

7/13/2020

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Sometimes, while browsing internet, there are some interesting docker images attracting my attention. I found it had better save them somewhere before I forgot them. Here comes this post. All those dockers have been tested @ Play with Docker .
  • Install Docker/Docker Composer
  • Matomo - Web analytics app
  • Shiori - a Simple Bookmarks Manager
  • A Simple PHP Web Proxy:miniProxy
  • Instantbox-Create a Web temp linux
  • Jellyfin - A Personal Media Server
  • Deploy a CentOS Container
  • HTML5-Based Speedtest to Your VPS

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IT Tools

12/2/2017

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Here are lists what I am using in my environment for Daily IT network security work. Hope it will help other network security administrator / analyst / architecture to compare with their environment. Please leave me a message if you do see there are some topics missing in my list. Most products and software are able to be found in the posts of this blog. Please use sitemap page or search function to look for related posts.
1. IT Service
2. Security Framework
3. Devices Management
4. Network Performance Monitoring
5. Lab Environment
6. WIFI
7. Compliance
8. Network Security Models

There are some other related posts in this blog:
  • My Top Network Security Tools
  • My Top Internet / Network Tools
  • My Top IT Tools
  • Website and Tools for Blogger


1. IT Service

ITIL v3 -IBM Maximo Asset Management - Video Link

  • ITIL service strategy - specifies that each stage of the service lifecycle must stay focused upon the business case, with defined business goals, requirements and service management principles.     
  • ITIL service design - provides guidance for the production and maintenance of IT policies, architectures and documents. 
  • ITIL service transition - focuses upon change management role and release practices, providing guidance and process activities for transitioning services into the business environment.     
  • ITIL service operation - focuses upon delivery and control process activities based on a selection of service support and service delivery control points.     
  • ITIL continual service improvement - focuses upon the process elements involved in identifying and introducing service management improvements, as well as issues surrounding service retirement.

2. Security Framework

An information security framework is a series of documented processes that are used to define policies and procedures around the implementation and ongoing management of information security controls in an enterprise environment. These frameworks are basically a "blueprint" for building an information security program to manage risk and reduce vulnerabilities. Information security pros can utilize these frameworks to define and prioritize the tasks required to build security into an organization.

2.1 ISO27000
The ISO 27000 series of standards have been specifically reserved by ISO for information security matters.
  • ISO27001:This is the specification for an information security management system (an ISMS) which replaced the old BS7799-2 standard
  • ISO 27002:This is the 27000 series standard number of what was originally the ISO 17799 standard (which itself was formerly known as BS7799-1)..
  • ISO 27003:This will be the official number of a new standard intended to offer guidance for the implementation of an ISMS (IS Management System) .
  • ISO 27004:This standard covers information security system management measurement and metrics, including suggested ISO27002 aligned controls..
  • ISO 27005: This is the methodology independent ISO standard for information security risk management..
  • ISO 27006: This standard provides guidelines for the accreditation of organizations offering ISMS certification.

2.2 COBIT
COBIT 5 is the only business framework for the governance and management of enterprise IT. , providing an end-to-end business view of the governance of enterprise IT that reflects the central role of information and technology in creating value for enterprises.

2.3 NIST SP 800
"Security and Privacy Controls for Federal Information Systems and Organizations," provides a catalog of security controls for all U.S. federal information systems except those related to national security.

There is overlap between there frameworks so "crosswalks" can be built to show compliance with different regulatory standards. For example, ISO 27002 defines information security policy in section 5; COBIT defines it in the section "Plan and Organize"; Sarbanes Oxley defines it as "Internal Environment"; HIPAA defines it as "Assigned Security Responsibility"; and PCI DSS defines it as "Maintain an Information Security Policy." By using a common framework like ISO 27000, a company can then use this crosswalk process to show compliance with multiple regulations such as HIPAA, Sarbanes Oxley, PCI DSS and GLBA, to name a few.



3. Network Management

3.1 Log Management
  • Syslog Collector - Solarwinds Kiwi Syslog , Juniper STRM  (Rebanded from Qradar), IBM QRada SIEM
  • Log Analyzing - IBM QRada SIEM, Juniper STRM (Rebanded from QRadar)

3.2 Configuration Management - 
  • Configuration Backup / Restoration :Infroblox NetMRI, Tripwire Enterprise, rancid, Solarwinds NCM
  • Configuration Compliance Check - Infroblox NetMRI, Tripwire Enterprise,
  • Network Change Automation - various reporting scripts, Infroblox NetMRI, Tripwire Enterprise,


3.3 System Image Management - File Transferring 
  • Tftp Server - Solarwinds Free TFTP Server, PumpKIN, Tftpd32
  • FTP Server - Quick 'n Easy FTP Server - Pablo Software Solutions
  • SFTP/SCP Server - Solarwinds Free SFTP/SCP Server, 
  • SSH Client - Putty, SecureCRT
  • FTP/SFTP Client - WinSCP







3.4 Network Documentation
  • SharePoint
  • Automated Data Center Infrastructure Management - Device42
  • Wiki : Dokuwiki
  • Other options: DocuSnap,  Graphical Networks - netTerrain, NetBrain, RackTables









3.5 Network Access Control
  • Radius - TekRADIUS
  • Tacacs+ - Cisco ACS, Tacacs+



4. Network Performance Monitoring

  • Bandwidth Monitoring: PRTG, Inforblox NetMRI, Solarwinds NPM
  • Device Health Monitoring from Internet: http://www.monitor.us/
  • Device Health Monitoring from Internal: PRTG, Solarwinds NPM
  • Flow Collector: PRTG, Solarwinds NPM
a netflow collector with a web frontend (nfsen, or the flowview cacti plugin)
a cacti or equivalent service to track/graph bandwidth usage on every trunk, WAN and Internet Access circuits, IP SLAs, Smokepings, ...



5. Lab Environment
  • ESXi
  • GNS3
  • UNetLab (EVE-NG)
  • Cisco VIRL - Cisco Virtual Internet Routing LAB




6. Wireless


  • Fluke Networks - AirCheck Wi-Fi Tester
  • Cisco WLC
  • HP Aruba
  • Ubiquiti Unifi








7. Compliance


  • CompliantPro is a robust, extremely flexible, web-based compliance software system for proactively managing compliance to a variety of regulations and standards. The software provides the core functionality to manage processes for communicating, monitoring and documenting your diverse compliance activities.


8. Network Security Models


  • CIA Triad : onfidentiality, integrity and availability, also known as the CIA triad, is a model designed to guide policies for information security within an organization. The model is also sometimes referred to as the AIC triad (availability, integrity and confidentiality) to avoid confusion with the Central Intelligence Agency. The elements of the triad are considered the three most crucial components of security. Confidentiality is a set of rules that limits access to information, integrity is the assurance that the information is trustworthy and accurate, and availability is a guarantee of reliable access to the information by authorized people.
  • Cisco offers the integrated security solution, which delivers services above and beyond the "one size fits all" model. In addition, Cisco services are designed to deliver value throughout the entire network life cycle that includes the stages of prepare, plan, design, implement, operate, and optimize (PPDIOO). the Cisco PPDIOO model,  encompasses all the steps from network vision to optimization, enabling Cisco to provide a broader portfolio of support and end-to-end solutions to its customers.
  • Cisco Network Security Design Steps :Following a structured set of steps when developing and implementing network security will help you address the varied concerns that play a part in security design. Many security strategies have been developed in a haphazard way and have failed to actually secure assets and to meet a customer's primary goals for security. Breaking down the process of security design into the following steps will help you effectively plan and execute a security strategy:
    1. Identify network assets.
    2. Analyze security risks.
    3. Analyze security requirements and tradeoffs.
    4. Develop a security plan.
    5. Define a security policy.
    6. Develop procedures for applying security policies.
    7. Develop a technical implementation strategy.
    8. Achieve buy-in from users, managers, and technical staff.
    9. Train users, managers, and technical staff.
    10. Implement the technical strategy and security procedures.
    11. Test the security and update it if any problems are found.
    12. Maintain security.











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My Top Internet / Network Tools

12/2/2017

1 Comment

 
There are lots of useful sites which helps the troubleshooting procedures. I listed some common tools or websites used by myself. Please let me know what you are using and I would like to try them and add them into this list.
1. Internet/Network Tools Portal
2. Internet/Network Speed Test
3. IP Subnet Calculator
4. Network Monitoring Related
5. DNS and Domain Name Related
6. BGP Toolkit
7. Your Public IP Address
8. Online Diagram Drawing Sites
9. Snmp tools
10. HTTP and HTTPS Check Tools
11. Email Diagnostic Tools
12. Proxy Sites
13. Remote Support / Online Meeting
14. Remote (SSH / Telnet) Access Tools
15. NTP Server
16. Portable Software
17. Online PDF Tools

There are some other related posts in this blog:
  • My Top Network Security Tools
  • My Top Internet / Network Tools
  • My Top IT Tools
  • Website and Tools for Blogger

1. Internet/Network Tools Portal
  • http://ping.eu/
Ping – Shows how long it takes for packets to reach host
Traceroute – Traces the route of packets to destination host from our server
DNS lookup – Look up DNS record
WHOIS – Lists contact info for an IP or domain
Port check – Tests if port is opened on specified IP
Reverse lookup – Gets hostname by IP address
Proxy checker – Detects a proxy server
Bandwidth meter – Detects your download speed from our server
Network calculator – Calculates subnet range by network mask
Network mask calculator – Calculates network mask by subnet range
Country by IP – Detects country by IP or hostname
Unit converter – Converts values from one unit to another
    • http://centralops.net/co/
    • Robtex Swiss Army Knife Internet Tool
    DNS checks detailed dns information for a hostname ( www.facebook.com , www.yahoo.com , www.youtube.com )
    IP-number checks ip number information such as dns reverse and forwards
    route checks a specific routed prefix
    AS numbers checks information on an AS-number
    AS macros checks who belongs to an AS-macro

    2. Internet/Network Speed Test
    • http://www.speedtest.net/
    • http://speedcheck.rogers.com/en.html
    • iperf from http://sourceforge.net/projects/iperf/
    • Netflix Speed Test: fast.com: it tells you what your download speed is from Netflix’s servers.

    3. IP Subnet Calculator

    • http://jodies.de/ipcalc
    • IP Subnet Calculator

    4. Network Monitoring Related

    • http://www.monitor.us - Free all-in-one IT systems monitoring from the cloud
    • Uptime Robot - It monitors your websites every 5 minutes and alerts you if your sites are down
    • http://www.paessler.com/prtg - free 100 sensor to monitor your network devices. Remote probe works great. 
    • Solarwinds NPM
    • OpManager from ManageEngine

    5. DNS and Domain Name Related

    • http://www.dnsstuff.com/
    • http://my-addr.com/
    • https://www.whatsmydns.net/
    • http://www.cloudflare.com - protects and accelerates any website online. CloudFlare is designed to accelerate and secure any website.
    • http://whois.domaintools.com/ - is the leader in domain name, DNS and Internet OSINT-based cyber threat intelligence and cybercrime forensics products and data.

    6. BGP Toolkit

    • http://bgp.he.net/
    • http://routeserver.org/ (telnet into live BGP Routers and Check BGP table, if see BGP routing information is help you to isolate an issue you are facing. )
    Choose any one of servers by clicking the spot and it will bring you to this kind of link: telnet://route-views.on.bb.telus.com 

    route-views.ab>show bgp paths 47102
    Address    Hash Refcount Metric Path
    0x666C2980 2421        0      0 852 3257 4436 23498 47102 47102 i

    route-views.ab>sh ip bgp 199.xxx.xxx.0
    BGP routing table entry for 199.xxx.xxx.0/24, version 82108513
    Bestpath Modifiers: deterministic-med
    Paths: (1 available, best #1)
      Not advertised to any peer
      852 3257 4436 23498 47102 47102
        154.11.98.17 from 154.11.98.17 (154.11.0.71)
          Origin IGP, localpref 100, valid, external, best
          Dampinfo: penalty 1304, flapped 4 times in 00:14:31


    7. Your Public IP Address

    • http://www.whatismyip.com/
    • http://whatismyipaddress.com/
    • Google "what is my ip".

    8. Online Diagram Drawing Sites

    • https://www.draw.io/ : it supports to save diagram to all kinds of Internet online drivers. So far, I found it is best to make network diagram. It is completely free to use for any purpose, there is no premium pay-for functionality, watermarking, or other limitations. You own the content you produce with draw.io and may use it for any purpose, including commercially.
    • Gliffy :After trial, it is still free to use, but not able to create a new diagram. Existing diagrams will still be kept for editing. Gliffy marks all diagrams as public when a trial expires. Any diagrams created would remain in the account. Diagrams always remain in the account regardless of the status. Gliffy never moves or deletes diagrams. Free account have a limit of 2MB or 5 diagrams, but usually it is enough since you export to gliffy format to import it later. 
    • Lucid Chart. It can import /export visio format file. Free account will limit complexity to only 60 objects, three active documents, 25mb of Storage, not able to edit imported visio files, etc. 
    • http://asciiflow.com/
    • SmartDraw :  provides desktop version, not free. For Cloud , trial for only 7 days, no free usage. 
    • https://cloudcraft.co/ : Best for AWS diagrams. It also gives you a budget number for your AWS infrastructure. Please check this post.


    9. Snmp tools

    • http://www.net-snmp.org/

    10. HTTP and HTTPS Check Tools

    • http://www.alertra.com/articles/spotcheck_info/ Spot Check™ provides an easy way to demonstrate how we check from multiple locations and is also a good way to assess the current status of a Web server. The text or other data specified by the URL is loaded according to RFC 2616 (HTTP/1.1). Both HTTP and HTTPS (SSL over HTTP) protocols are supported. 
    • http://www.sslshopper.com/ssl-checker.html
    • http://achecker.ca/checker/index.php
    • http://www.webpagetest.org/
    • https://www.browserling.com/ - Test website using different platform and broswer version.

    11. Email Diagnostic Tools

    • http://mxtoolbox.com/


    12. Proxy Sites

    • http://www.vtunnel.com/


    13. Remote Support / Online Meeting

    • https://zoom.us/
    • http://www.packetix.net/en/secure/install/
    • Teamviewer
    • Ammyy Admin
    • Sunlogin
    • join.me
    • Cisco WebEx
    • http://www.spreed.com/
    • http://vyew.com/


    14. Remote (SSH / Telnet) Access Tools

    • PuTTY: a free telnet/ssh client - chiark home page
    • SecureCRT from Vandyke
    • Poderosa from SourceForge 
    • More from http://alternativeto.net/software/securecrt/

    15. NTP Server

    • Meinberg NTP

    16. Portable Software
    • http://www.portablesoft.org/

    17. Online PDF Tools
    • Online PDF Editor - Limit 3 tasks per hour.
    • pdfescape



    Before you click away to do some heavy network security reading, please leave a comment and share your favorite network and security tools so that I can add them to my list!

    1 Comment

    Website and Tools for Blog

    12/2/2017

    0 Comments

     
    During working on this "Network Security Memo" blog, there are some helpful websites or tools being used but not listed in previous posts. This post will mostly focus on blog related tools. Hopefully this will help some other beginners when they are trying to set their blog site up. Here are the lists:
    1. Website Speed Test and Monitoring Tools
    2. Webmaster Tools
    3. Website Analytics Tools
    4. Making Money by adding ads
    5. Buying Ads from advertiser
    6. Plugins
    7. Blog Promotion
    8. Free Domain Name
    9. Free Image Hosting and Sharing Sites
    10. Check if Your Website Blocked by GFW in China
    11. Website Submission
    12. Google Test Tools
    13. SEO Tools

    There are some other related posts in this blog:
    • My Top Network Security Tools
    • My Top Internet / Network Tools
    • My Top IT Tools
    • Website and Tools for Blogger



      1. Website Speed Test and Monitoring Tools

      • http://ping.eu/ or http://centralops.net/co/ or http://ping.chinaz.com/
      • http://gtmetrix.com/
      • http://www.webkaka.com/
      • http://whichloadsfaster.info/
      • http://www.speedtest.net/
      • http://www.monitor.us/
      • dotcom-tools.com - Website Speed Test - Page Loads

      2. Webmaster Tools
      a. Google Webmaster Tools
      b. Bing - Webmaster Tools

      3. Website Analytics Tools

      a. Google Analytics Official Website – Web Analytics & Reporting
      b. http://clicky.com/

      4. Making Money by adding ads

      a. AdSense – Google Ads
      b. Amazon Associates
      c. Chitika
      d. ebay Affiliate

      5. Buying Ads from advertiser

      a. Google AdWords - Be Found In More Online Searches

      6. Plugins

      • https://feedburner.google.com/
      • Recent Comments Widget for Blogger
      • Feedjit -  Free Live Traffic Feed
      • Adding Tools to Blogger
      • https://disqus.com/
      • http://www.linkwithin.com/learn?ref=widget
      • Print Friently Button
      • clustrmaps.com - Visualize Your Website's Stats

      7. Blog Promotion
      a. Bloggup
      b. SEO Tools from lusongsong.com
      c. Freewebsubmission.com
      d. http://www.submissionurl.com/

      8. Free Domain Name

      a. https://www.cloudflare.com/
      b. http://www.freenom.com/


      9. Free Image Hosting and Sharing Sites

      a. Photobucket.com Not good anymore. They changed their service on June 2017 and charge too much for their hosting service.
      b. Poco.cn
      c. www.niupic.com
      d. Postimage
      e. TinyPic - Free Image Hosting, Photo Sharing & Video Hosting


      10. Check if Your Website Blocked by GFW in China

      a. Test if any website is blocked in china http://www.blockedinchina.net/
      b. 网站被墙了吗? http://www.hostucan.cn/site-block-checker
      c. Test website from China
      • 1. Web Page Test 
      • 2. Site 24X7
      • 3. Dot Com Monitor
      • 4. Baidu Site Speed Monitoring 
      • 5. 360 iYun Site Speed

      11. Website Submission
      Find list of best free URL submission and website submission sites. Submit your websites to 100's of Sites including search engines.
      PingMyLink.com
      Free search engine submission and Ping Service. Free URL submission tool will automatically add your URL to several hundreds of different websites that automatically provide free backlinks for you. Each of these sites has been collected in one comprehensive list, and our free tool automates the entire process for you.

      FreeWebSubmission.com
      Free Web Submission is the source for free search engine submission. Provides webmasters and site owners with free manual and auto submission to the highest-rated, free internet search engines and directories.

      LinkStation
      Free Autoubmit URL to 8000 FFA links pages.

      Pingmyurl.com
      Free Submit Your URL to 1,374 Different Websites.

      Global Search Engine Submitter
      Autoubmit Your Web Site to 65 Major Search Engines.

      SubmitExpress
      Free Search engine autosubmitter to 70+ search engines and directories.

      Submitx.com
      Free website submission to 636 search engines and directories.

      AddMe
      Website submission & registration with 25 search engines.

      Site-submit.netne.net
      Submit a URL to Over 130 Search Engines for Free. Free and easy site URL submission to more than 130 search engines.

      MultiLinks
      Submit URL to 200 classified ad sites and 1000 FFA links pages.



      12. Google Test Tools
      • Google Adsense Sandbox : You can use this tool to determine if a domain is banned in the AdSense program. Put the website URL in the input box and if you see no ads, Google may have disabled ad-serving for that domain.
      • Google Mobile Friendly Test Site


      13. SEO Tools

      SEO = Search Engine Optimization.” It is the optimized process of getting traffic from all kinds of search engines such as google, bing, yahoo.
      • SerpStat is a all-in-one SEO tool that consists of five different modules:Position Tracking, Backlink Analysis, Keyword Research, Site Audit, Competitor Research
      • Moz Open Site Explorer: This free version of Open Site Explorer gives you a limit times to have quick but full look of link analysis.
      • QuickSprout tells you how to make those important changes on your website that will grow your traffic. 
      • Similarweb : FREE version will provide 5 Results Per Metric,  1 Month of Mobile App Data and 3 Months of Web Traffic Data .
      • SeoSiteCheckup runs through a fast audit of your site, checking for proper tags and surfacing any errors that might come up.

      14. Free Video Editing Tools


      • OpenShot (Windows, Mac, and Linux)
      • VideoPad (Windows & Mac & Android & Kindle)
      • VSDC Free Video Editor (Windows)





      0 Comments

      My Top Internet / Network Tools

      12/2/2017

      0 Comments

       
      There are lots of useful sites which helps the troubleshooting procedures. I listed some common tools or websites used by myself. Please let me know what you are using and I would like to try them and add them into this list.
      1. Internet/Network Tools Portal
      2. Internet/Network Speed Test
      3. IP Subnet Calculator
      4. Network Monitoring Related
      5. DNS and Domain Name Related
      6. BGP Toolkit
      7. Your Public IP Address
      8. Online Diagram Drawing Sites
      9. Snmp tools
      10. HTTP and HTTPS Check Tools
      11. Email Diagnostic Tools
      12. Proxy Sites
      13. Remote Support / Online Meeting
      14. Remote (SSH / Telnet) Access Tools
      15. NTP Server
      16. Portable Software
      17. Online PDF Tools

      There are some other related posts in this blog:
      • My Top Network Security Tools
      • My Top Internet / Network Tools
      • My Top IT Tools
      • Website and Tools for Blogger

      1. Internet/Network Tools Portal
      • http://ping.eu/
      Ping – Shows how long it takes for packets to reach host
      Traceroute – Traces the route of packets to destination host from our server
      DNS lookup – Look up DNS record
      WHOIS – Lists contact info for an IP or domain
      Port check – Tests if port is opened on specified IP
      Reverse lookup – Gets hostname by IP address
      Proxy checker – Detects a proxy server
      Bandwidth meter – Detects your download speed from our server
      Network calculator – Calculates subnet range by network mask
      Network mask calculator – Calculates network mask by subnet range
      Country by IP – Detects country by IP or hostname
      Unit converter – Converts values from one unit to another
        • http://centralops.net/co/
        • Robtex Swiss Army Knife Internet Tool
        DNS checks detailed dns information for a hostname ( www.facebook.com , www.yahoo.com , www.youtube.com )
        IP-number checks ip number information such as dns reverse and forwards
        route checks a specific routed prefix
        AS numbers checks information on an AS-number
        AS macros checks who belongs to an AS-macro

        2. Internet/Network Speed Test
        • http://www.speedtest.net/
        • http://speedcheck.rogers.com/en.html
        • iperf from http://sourceforge.net/projects/iperf/
        • Netflix Speed Test: fast.com: it tells you what your download speed is from Netflix’s servers.

        3. IP Subnet Calculator

        • http://jodies.de/ipcalc
        • IP Subnet Calculator

        4. Network Monitoring Related

        • http://www.monitor.us - Free all-in-one IT systems monitoring from the cloud
        • Uptime Robot - It monitors your websites every 5 minutes and alerts you if your sites are down
        • http://www.paessler.com/prtg - free 100 sensor to monitor your network devices. Remote probe works great. 
        • Solarwinds NPM
        • OpManager from ManageEngine

        5. DNS and Domain Name Related

        • http://www.dnsstuff.com/
        • http://my-addr.com/
        • https://www.whatsmydns.net/
        • http://www.cloudflare.com - protects and accelerates any website online. CloudFlare is designed to accelerate and secure any website.
        • http://whois.domaintools.com/ - is the leader in domain name, DNS and Internet OSINT-based cyber threat intelligence and cybercrime forensics products and data.

        6. BGP Toolkit

        • http://bgp.he.net/
        • http://routeserver.org/ (telnet into live BGP Routers and Check BGP table, if see BGP routing information is help you to isolate an issue you are facing. )
        Choose any one of servers by clicking the spot and it will bring you to this kind of link: telnet://route-views.on.bb.telus.com 

        route-views.ab>show bgp paths 47102
        Address    Hash Refcount Metric Path
        0x666C2980 2421        0      0 852 3257 4436 23498 47102 47102 i

        route-views.ab>sh ip bgp 199.xxx.xxx.0
        BGP routing table entry for 199.xxx.xxx.0/24, version 82108513
        Bestpath Modifiers: deterministic-med
        Paths: (1 available, best #1)
          Not advertised to any peer
          852 3257 4436 23498 47102 47102
            154.11.98.17 from 154.11.98.17 (154.11.0.71)
              Origin IGP, localpref 100, valid, external, best
              Dampinfo: penalty 1304, flapped 4 times in 00:14:31


        7. Your Public IP Address

        • http://www.whatismyip.com/
        • http://whatismyipaddress.com/
        • Google "what is my ip".

        8. Online Diagram Drawing Sites

        • https://www.draw.io/ : it supports to save diagram to all kinds of Internet online drivers. So far, I found it is best to make network diagram. It is completely free to use for any purpose, there is no premium pay-for functionality, watermarking, or other limitations. You own the content you produce with draw.io and may use it for any purpose, including commercially.
        • Gliffy :After trial, it is still free to use, but not able to create a new diagram. Existing diagrams will still be kept for editing. Gliffy marks all diagrams as public when a trial expires. Any diagrams created would remain in the account. Diagrams always remain in the account regardless of the status. Gliffy never moves or deletes diagrams. Free account have a limit of 2MB or 5 diagrams, but usually it is enough since you export to gliffy format to import it later. 
        • Lucid Chart. It can import /export visio format file. Free account will limit complexity to only 60 objects, three active documents, 25mb of Storage, not able to edit imported visio files, etc. 
        • http://asciiflow.com/
        • SmartDraw :  provides desktop version, not free. For Cloud , trial for only 7 days, no free usage. 
        • https://cloudcraft.co/ : Best for AWS diagrams. It also gives you a budget number for your AWS infrastructure. Please check this post.


        9. Snmp tools

        • http://www.net-snmp.org/

        10. HTTP and HTTPS Check Tools

        • http://www.alertra.com/articles/spotcheck_info/ Spot Check™ provides an easy way to demonstrate how we check from multiple locations and is also a good way to assess the current status of a Web server. The text or other data specified by the URL is loaded according to RFC 2616 (HTTP/1.1). Both HTTP and HTTPS (SSL over HTTP) protocols are supported. 
        • http://www.sslshopper.com/ssl-checker.html
        • http://achecker.ca/checker/index.php
        • http://www.webpagetest.org/
        • https://www.browserling.com/ - Test website using different platform and broswer version.

        11. Email Diagnostic Tools

        • http://mxtoolbox.com/


        12. Proxy Sites

        • http://www.vtunnel.com/


        13. Remote Support / Online Meeting

        • https://zoom.us/
        • http://www.packetix.net/en/secure/install/
        • Teamviewer
        • Ammyy Admin
        • Sunlogin
        • join.me
        • Cisco WebEx
        • http://www.spreed.com/
        • http://vyew.com/


        14. Remote (SSH / Telnet) Access Tools

        • PuTTY: a free telnet/ssh client - chiark home page
        • SecureCRT from Vandyke
        • Poderosa from SourceForge 
        • More from http://alternativeto.net/software/securecrt/

        15. NTP Server

        • Meinberg NTP

        16. Portable Software
        • http://www.portablesoft.org/

        17. Online PDF Tools
        • Online PDF Editor - Limit 3 tasks per hour.
        • pdfescape



        Before you click away to do some heavy network security reading, please leave a comment and share your favorite network and security tools so that I can add them to my list!

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          IT Guy , focusing on CyberSecurity stuff. 
          ​Always leaning and practicing. 

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