Bookmarks

Useful bookmarks that I have used or found over the years:

Email

• DMARC.io
  • List of 3rd party services to ensure your domain(s) are DMARC compliant.
• Google Message Header Analyzer
  • Google’s tool to analyze message headers from an email.
• Microsoft Message Analyzer
  • Microsoft’s tool to analyze message headers from an email.
• MXToolbox
  • Used to test and check various email systems for a given domain.
• Office 365 Safelinks URL decoder
  • Used to decode safelinks URLs.
• SPF Checker
  • Used to check if a SPF record is valid for a given domain.

Microsoft

• ADMX.help
  • Used to find the registry equivalent for Group Policy settings.
• Microsoft Test Connectivity Tool
  • Used to test various Microsoft Services for troubleshooting purposes.

Network

• Cloudflare Speed Test
  • Cloudflares tool to measure network speeds and provide detailed results.
• DNS Checker
  • Used to check DNS records.
• DNS Dumpster
  • Used to get dump of DNS records for a given domain.
• DNS Trails
  • Used to check historical DNS entries for a given domain (limited with a free account).
• Downdector
  • Used to check if a given service(es) are having an outage.
• Outgoing Port Tester
  • Used to test a outgoing port to see if firewall rules are working.
• StormControl.net
  • Used to calculate subnets, get vendor of a MAC address, bit conversion, WHOIS, and BGP.
• Testmy.net
  • Used to test network connection speeds.
• WhatIsMyIP
  • Used to check your IP and location of other IP addresses (Useful for tracking which country an IP address is coming from).
• WhoIs Domain Tools
  • Used to get WhoIs information for a given IP Address, IP Block, and domain name.
• Wireshark OUI Lookup
  • Used to go through wireshark’s database to find the manufacturer of a given MAC address.

Security

• AbuseIPDB
  • Used to verify if a given IP address is reporting malicious behavior.
• AD Security
  • Blog site for Active Directory security and best practices.
• Cert Search
  • Used to get information about public certificates.
• Expand URL
  • Used to expand a shortend URL.
• GetLinkInfo
  • Used to get info/expand a shortened URL.
• HaveIBeenPwned
  • Used to see if a email address or password has been found in a known data breach.
• STIG List
  • List of best practices to apply for various products, operating systems, etc.
• VirusTotal
  • Used to check if a given file, hash, URL, etc matches with any given AntiVirus.

Misc

• Discohook
  • Editor and live preview tool for crafting discord messages against a webhook.
• End-Of-Life Lookup
  • Used to see if a given product has reached end-of-life or when.
• Intel Hardware Verification
  • Used to check if a given Intel product that has a YottaMark or BradyID is genuine.
• Mermaid Live Editor
  • For help on creating diagrams in markdown and see them in real time.
• PCI Lookup
  • Used to get the name/description of a device based on Vendor ID and Device ID,
• User Agent Parser
  • Used to check what type of device it is based on the user agent string.
• WolfRam Alpha
  • AI tool to calculate a given input for a wide variety of subjects.

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