By ThreatListPro Security Team · Published February 27, 2026 · Last verified: February 28, 2026
The Cost Calculator
Most IT teams do not realize how much they spend on manual IP blocking until they add up the hours. Here is a straightforward cost comparison based on what we hear from organizations dealing with active VPN brute force campaigns.
Manual IP Blocking: Monthly Cost
ThreatListPro: Monthly Cost
Side-by-Side Comparison
| Metric | Manual Blocking | ThreatListPro |
|---|---|---|
| Setup Time | Ongoing (never finished) | 5 minutes |
| Daily Maintenance | 30-60 minutes | None |
| Coverage | Reactive (block after attack) | Proactive (block before attack) |
| Consistency | Varies by admin, shift, workload | Automated weekly updates |
| Scalability | Breaks at scale | Same effort for 1 or 50 firewalls |
| Knowledge Required | High (log analysis, GeoIP, reputation checks) | Low (paste URL into firewall) |
| Monthly Cost | $600-1,500 in labor | $9.99 |
| Threat Intelligence | Your logs only | Honeypot network across thousands of portals |
The Manual Blocking Trap
Manual IP blocking feels productive. You review logs, identify bad IPs, add firewall rules, and the attacks stop. But it is a trap because it is fundamentally reactive. Here is the cycle most teams get stuck in:
VPN portal
lock out
tickets pile up
logs
on firewall
new IP
The attacker has thousands of IP addresses. You have one admin. Every IP you block is replaced by another within hours. You are always one step behind, and the damage—lockouts, log noise, wasted time—has already been done before you even start looking at the logs.
Why reactive blocking fails at scale
- Attacker IP rotation. Modern botnets use residential proxies and compromised IoT devices. When you block one IP, the attacker has hundreds more. Your firewall rule count grows indefinitely while the attacker's capacity stays constant.
- Inconsistent coverage. Manual processes depend on which admin is on shift, how busy they are, and whether they check logs before or after lunch. Attacks that hit at 2 AM on a Saturday go unblocked until Monday morning.
- No shared intelligence. When you block an IP manually, only your firewall benefits. You are not leveraging data from thousands of other organizations being hit by the same botnet. An automated blocklist aggregates intelligence across its entire customer base.
- Documentation burden. Every manual firewall change needs documentation for audits and compliance. Hundreds of individual IP block entries create a sprawling, unmanageable rule set that makes firewall audits painful.
What Automated Blocking Gives You
An automated IP blocklist like ThreatListPro fundamentally changes the equation. Instead of reacting to attacks, you prevent them. Instead of reviewing logs, you spend your time on projects that actually improve security.
Proactive protection
IPs on the ThreatListPro blocklist are identified from honeypot data before they attack your specific network. The attacker's connection is refused at your firewall before a single login attempt reaches your VPN portal. No lockouts. No log noise. No helpdesk tickets.
Zero ongoing maintenance
The blocklist updates automatically on a weekly cadence. New attacker IPs are added, stale entries are removed. Your firewall fetches the updated list on its configured refresh interval. There is nothing for you to do after the initial 5-minute setup.
Scales without additional effort
Whether you manage 1 firewall or 50, deploying ThreatListPro is the same: paste the EDL URL and bind it to a deny rule. Adding another customer or another office takes 5 minutes, not another hire.
Clean firewall rules
Instead of hundreds of individual IP deny rules cluttering your firewall policy, you have one EDL rule referencing one URL. Firewall audits are simple. Rule cleanup is nonexistent.
$ grep "authentication failed" /var/log/vpn.log | awk '{print $NF}' | sort | uniq -c | sort -rn | head -20
$ whois 185.220.101.42 # check each IP
$ ssh firewall "set security address-book block-list address ip-185-220-101-42/32"
$ ssh firewall "commit" # repeat 50x per week
# ThreatListPro: what your Tuesday looks like
$ # (nothing -- the blocklist auto-updated on Sunday)
Frequently Asked Questions
How much time does manual IP blocking take per week?
Organizations experiencing active VPN brute force campaigns typically spend 3-5 hours per week on manual IP blocking. This includes reviewing authentication logs, cross-referencing with reputation databases, adding firewall rules, documenting changes, and handling lockout tickets. At $50-75/hour, that is $600-1,500/month in labor.
What is the difference between reactive and proactive IP blocking?
Reactive blocking means you block an IP after it has already attacked you. The damage has been done. Proactive blocking means you block known attacker IPs before they reach your network. An automated blocklist like ThreatListPro identifies attacker IPs from honeypot data and distributes them to your firewall before the attacker sends a single packet to your VPN portal.
Can I automate manual IP blocking with scripts instead of buying a blocklist?
You can partially automate by writing scripts that parse logs and push block rules to your firewall. However, this is still reactive, requires ongoing maintenance, creates false positive risk if a legitimate user mistyped their password, and does not benefit from shared threat intelligence. ThreatListPro costs $9.99/month and provides proactive, curated blocking with zero scripting required.