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  • Home
  • About
  • Information
  • Bethico
  • Know How
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  • Back to top
  • Export to PDF
  • Backlinks
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This is an old revision of the document!


Table of Contents

  • Check IPs
  • DNS & Mail
  • SSL & Ports
  • Email
  • Speed
  • Block Access

Network

Check IPs

  • Arul's Utilities (IP tracking, MAC address)
  • What is my IP
  • What is my IP address
  • Whois Lookup
  • What is my User Agent
  • SSL checker
  • Am I Behind A Proxy?
  • IP Location Finder
  • TRUE IP address ranges
  • Understanding TCP/IP addressing and subnetting basics
  • Find MAC Address Vendors
  • Check Email protection

DNS & Mail

  • Watch TV which is restricted to domestic IP
  • SPF, DKIM, DMARC
  • What's My DNS Server?
  • Verify DNS
  • Trace DNS Delegation
  • DNS Nameserver Spoofability Test
  • DNS propagation checker
  • Check nameservers used
  • Dig web interface
  • How to run your own DNS Resolving Server
  • DNS Servers

SSL & Ports

  • SSL Checker
  • Port Forwarding Tester
  • Open Port Check Tool
  • Verifying Which Ports Are Listening

Email

  • Yahoo
  • Google Mail
  • Mail Settings
  • Mail Server
  • Enhance security for outgoing email (DKIM)
  • DKIM Record Check
  • How to Set Up DKIM in 3 Simple Steps

Speed

  • 3BB Speed Test
  • Pingdom Website Speed Test
  • What is my browser's User Agent
  • Internet Explorer User Agents
  • GTmetrix

Block Access

  • Block China and Korea From Apache Based Servers or Forums with a .htaccess Blocklist
  • iptables blacklist script
  • The Beginner’s Guide to iptables, the Linux Firewall
  • Stop Traffic From China IP Addresses To Protect Your Web Server From Chinese Hackers
  • How to fix MySQL high CPU usage
  • IPdeny country block downloads
  • Block all Russia Public IP Addresses
  • 4 Ways to Identify Who is Logged-In on Your Linux System

Know How

  • iOS
  • Linux
  • Windows
  • Android
  • Network
  • Website
  • Hardware
  • Media (audio, video, photo)
  • Billiard and Pocket Pool
  • Restaurant
  • Outdated
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