This page contains links for useful resources I’ve run into, presented in no particular order.
CISCO
Cisco ISE Community
https://community.cisco.com/t5/identity-services-engine-ise/bd-p/5301j-disc-ise
Cisco TAC Time series WIRELESS (TAC engineers best practices webinars)
(Cisco-ID login required)
https://cs.co/tactime-wireless
Cisco TAC Time series ROUTE/SWITCH (TAC engineers best practices webinars)
(Cisco-ID login required)
https://cs.co/tactime-routeswitch
Cisco TAC Time series SECURITY (TAC engineers best practices webinars)
(Cisco-ID login required)
https://cs.co/tactime-security
Cisco TAC Time series DATACENTER (TAC engineers best practices webinars)
(Cisco-ID login required)
https://cs.co/tactime-datacenter
Cisco TAC Time series COLLABORATION (TAC engineers best practices webinars)
(Cisco-ID login required)
Cisco Firepower Performance Estimator
(Cisco-ID login required)
https://ngfwpe.cisco.com/dashboard
Cisco Firepower URL-filter Request Re-categorization
https://www.brightcloud.com/tools/url-ip-lookup.php
CHECK POINT
Check Point URL-filter Request Re-categorization (Check Point-ID login required)
https://www.checkpoint.com/urlcat/
Check Point Application Control Database
https://appwiki.checkpoint.com/appwikisdb/public.htm
Check Point Anti-Virus/Malware Database
https://threatwiki.checkpoint.com/threatwiki/public.htm
Check Point Check Me (General Policy Test)
http://www.cpcheckme.com/checkme/
Check Point Threat Map (Real-Time Attacks World-wide)
https://threatmap.checkpoint.com/
Check Point Logging Webinar
https://www.youtube.com/watch?v=oPpyP4QWrlY
DNS
DNS Complete Domain Tester
DNSSEC Domain Tester
https://dnssec-debugger.verisignlabs.com
DNSSEC Authentication Chain Visualizer
GENERAL SECURITY
Eicar (Anti-Malware testing)
https://www.eicar.org/?page_id=3950
Wicar (Anti-Malware testing)
https://www.wicar.org/test-malware.html
Qualys SSL Server Test (TLS versions, certificates, etc.)
https://www.ssllabs.com/ssltest/
STIG Viewer (Security Technical Implementation Guides) Findings / Requirements
https://www.stigviewer.com/stigs
Swedish Center for Cyber Security (Publications, in Swedish)
https://www.cfcs.se/publikationer/
VISIO
Visio Cafe (great resource for Visio shapes)
MISCELLANEOUS
NetBox (IPAM and data center rack inventory management)
https://netbox.readthedocs.io/en/stable/
TACACSGUI (a free, open source TACACS+ solution)