VPN Security & IP Blocklist Resources

In-depth articles on VPN brute force attacks, External Dynamic Lists, IP blocklists, and practical firewall security strategies.

Fundamentals

VPN Brute Force Attacks: How They Work and How to Stop Them (2026)

Understand credential stuffing, password spraying, and automated bot campaigns targeting VPN portals. Includes the 5 fastest solutions ranked by deployment time.

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Technical Guide

What Is an External Dynamic List (EDL)? Complete Guide 2026

Learn how External Dynamic Lists work in Palo Alto, FortiGate, and other firewalls. Understand EDL formats, refresh intervals, capacity limits, and best practices.

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Comparison

IP Blocklist vs Enterprise Threat Feed: Which Do You Need?

Compare the cost, complexity, and effectiveness of simple IP blocklists versus enterprise threat intelligence feeds for VPN brute force protection.

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Operations

Stop VPN Account Lockouts: Prevent Brute Force Helpdesk Floods

50+ accounts locked per day from VPN brute force? Learn how to stop Active Directory lockouts and eliminate helpdesk ticket floods with IP blocking.

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