• *****************Consultancy****************
• HLD (High Level Design) vs LLD (Low Level Design)
• Network Professional Services/Consultancies
• Common Network Architectures/Designs/Topologies
• Cisco Device Hardening for IOS, IOS-XE, IOS-XR, NX-OS
• Cisco Parts and Materials (BOM (Bill of Materials) Tool)
• Check Device Coverage
• Cisco Security Software Checker
• Cisco Optics-to-Device Compatibility Matrix
• Cisco 10GBASE SFP+ Modules Data Sheet
• Palo Alto PAN-OS EoL Summary
• Palo Alto Security Advisories
• Palo Alto Hardware EoL
• Power Connectors (Video)
• UK BS1363 Male Plug Angled Down to IEC320 C13 Connector (Kettle Lead) Vs. IEC320 C14 Male Plug to C13 Connector (Jumper Cord)
• UK BS1363 Male Plug Angled Down to IEC320 C13 Connector (Kettle Lead) Vs. IEC320 C14 Male Plug to C13 Connector (Jumper Cord)
• ************Cisco CCNA/CCNP Enterprise************
• Subnet Calculator
• Subnetting and TCP/IP
• EtherChannel L2 and L3
• Easy transfer of files to/from Cisco Router/Switch (pscp -scp -v -P 32254 cat3k_caa-universalk9.16.12.05b.SPA.bin COMPANY@X.X.X.X:cat3k_caa-universalk9.16.12.05b.SPA.bin)
• Bundle Mode or Install Mode: How to Upgrade your Cisco IOS Switch (Video)
• Catalyst 9300 Upgrading IOS-XE 16.6.2 onward (Install Mode)
• Comparison: Cisco ISR vs ASR
• Difference Between Cisco ISR and ASR
• Five Things To Know About DHCP Snooping
• *************Cisco CCNA/CCNP Security*************
• Backup and Restore Cisco ASA FIrewalls
• *************Cisco CCNA/CCNP Data Center*************
• Best Security Practices for Cisco Nexus OS (NX-OS) on Management Plane
• Cisco Nexus 9000 Software Upgrade NX-OS Tutorial
• Upgrade Process for a vPC Topology on the Primary Switch
• vPC(Virtual Port Channel) Basic Concept in Nexus Switches
• Virtual Port-Channel Config and Concepts
• Nexus vPC | How vPC works (Videos)
• The Complete Cisco Nexus VPC Guide
• *************Palo Alto PCNSA/PCNSE*************
• Complete Guide to Upgrading Palo Alto Firewalls and Panorama
• How to perform PANOS upgrade from CLI?
• CLI Cheat Sheet: User-ID
• How to check Status, Clear, Restore, and Monitor an IPSEC VPN Tunnel
• CLI Cheat Sheet: HA
• CLI Cheat Sheet: Device Management
• CLI Cheat Sheet: Networking
• How to Configure DNS Sinkhole
• How to Import and Export Address and Address Objects (CLI) (Creating objects from a file of IPs)
• *************Fortigate NSE4/NSE5*************
• Configure the management interface for initial access
• Fortigate Commands Cheat Sheet
• *************Checkpoint CCSA/CCSE*************
• ********************Interview Questions******************
• Networking Interview Questions (Videos)

• Network Consultant’s Handbook
• Palo Alto ACE/PCNSE
• Cisco CCNA/CCNP/CCIE Security
• Cisco CCNA/CCNP/CCIE Enterprise
• Checkpoint CCSA/CCSE
• Fortinet NSE4/NSE5
• Juniper SRX
• Cisco Meraki and Aruba APs
• VmWare
• CompTIA Linux+/LPIC1
• Microsoft MCSA
• HPE Switches
• CISA (Certified Information Systems Auditor)
• CISSP (Certified Information Systems Security Professional)
• Cisco CCNA/CCNP CyberOps
• SD-WAN Basics
• Useful Tools
• Professional Services (PS)/Consultancies (Private)

IT Compliance, Standards, Guidelines, Frameworks and Industry Best Practices:

• https://www.itgovernance.co.uk/standards
• ITIL4 (Information Technology Infrastructure Library) (ITSM (IT Service Management) Standard)
• ISACA ITAF (IT Assurance Framework) (IS Audit Standards, Guidelines and Code of Ethics)
• GDPR (General Data Protection Regulation)

IT Security Standards:

International Standards:
ISO/IEC 27001 and 27002
National Standards:
NIST Cybersecurity Framework (National Institute of Standards and Technology)
Cyber Essentials Plus (National Cyber Security Centre (NCSC))(Cyber Essentials is a UK Government-backed, industry-supported scheme to help organisations protect themselves against common online threats.)
Industry-Specific Standards:
PCI DSS (Payment Card Industry Data Security Standard)
HIPAA (Health Insurance Portability and Accountability Act)

Security Advisories:

US-CERT:
https://www.us-cert.gov/ncas/current-activity
Palo Alto: https://securityadvisories.paloaltonetworks.com
Checkpoint: https://www.checkpoint.com/advisories/
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsecurityalerts=#severity=&type=Security+Alerts&product=&version=
Cisco: https://tools.cisco.com/security/center/publicationListing.x
Meraki: https://meraki.cisco.com/blog/cisco-meraki-customer-advisories
Juniper: https://kb.juniper.net/InfoCenter/index?page=content&channel=SECURITY_ADVISORIES

EoL links:
Cisco: https://www.cisco.com/c/en/us/products/security/asa-5500-series-next-generation-firewalls/eos-eol-notice-listing.html
https://www.curvature.com/resources/cisco-end-of-life-guide
Palo Alto: https://www.paloaltonetworks.com/services/support/end-of-life-announcements/end-of-life-summary

https://www.paloaltonetworks.com/services/support/end-of-life-announcements/hardware-end-of-life-dates
Meraki: https://documentation.meraki.com/zGeneral_Administration/Other_Topics/Product_End-of-Life_(EOL)_Policies
Checkpoint: https://www.checkpoint.com/support-services/support-life-cycle-policy/

CVE (Common Vulnerabilities and Exposures) and CVSS (Common Vulnerability Scoring System):
https://www.cvedetails.com/cvss-score-distribution.php
https://nvd.nist.gov/vuln-metrics/cvss
https://cve.mitre.org/

Important Organizations:

• United States Computer Emergency Readiness Team (US-CERT)
• National Cybersecurity and Communications Integration Center (NCCIC)
• Cybersecurity and Infrastructure Security Agency (CISA)
• National Institute of Standards and Technology (NIST)
• National Cyber Security Centre (NCSC)
• National Security Agency (NSA)
• Government Communications Headquarters (GCHQ)
• Cybersecurity and Infrastructure Security Agency (CISA)
• The Council for Registered Ethical Security Testers (CREST)

Gartner Magic Quadrant: NGFWs and SD-WAN: