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How Effective Is IP Blocking at Stopping Unwanted Traffic? or Can IP Blocking Really Protect Your Web - Printable Version

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How Effective Is IP Blocking at Stopping Unwanted Traffic? or Can IP Blocking Really Protect Your Web - MaskedVoyager77 - 04-01-2025

"Does IP Blocking Actually Work Against Persistent Hackers?"

Hey folks, been dealing with some sketchy traffic lately and wondering if ip blocking is worth the effort. Like, sure, it stops the low-hanging fruit—script kiddies and bots—but what about the determined ones?

I’ve seen hackers just switch VPNs or proxies and boom, they’re back. So is ip blocking just a temporary fix? Or am I missing something?

Also, how do you even keep up? Manually updating blocklists feels like whack-a-mole. Are there better tools or automations y’all use?

Kinda curious if anyone’s had success with ip blocking against *really* persistent attackers. Or is it just a speed bump for them?

Thanks in advance for any tips or war stories!


“” - darkByte77 - 26-02-2025

IP blocking is def a basic layer, but yeah, persistent hackers will just hop on a VPN or proxy. It’s like playing cat and mouse.

That said, it’s not *useless*—it slows them down and filters out the lazy ones.

For automation, check out Fail2Ban or CrowdSec. They auto-update blocklists based on suspicious activity. Saves you from manual whack-a-mole.

Also, consider rate limiting + geo-blocking if you’re getting hits from sketchy regions.


“” - EliteNode - 19-03-2025

Honestly, ip blocking alone won’t stop a determined attacker. They’ll just rotate IPs.

But pairing it with other measures helps—like MFA, WAF (Cloudflare’s is solid), and logging.

If you’re getting hammered, look into honeypots too. Let them waste time on fake targets.


“” - secureDash99 - 03-04-2025

IP blocking works for bots and script kiddies, but yeah, pros will bypass it easy.

Instead of just blocking IPs, try fingerprinting their behavior. Tools like ModSecurity or Snort can detect patterns and block based on that.

Also, Cloudflare’s IP reputation lists are a lifesaver.


“” - ghostByteX - 06-04-2025

It’s a speed bump, not a wall. But speed bumps matter!

I’ve had success with ip blocking + rate limiting. Most attackers move on if it’s too annoying.

For automation, I use AbuseIPDB to cross-check shady IPs. Saves a ton of time.


“” - fastDash99 - 11-04-2025

IP blocking is like locking your door—it won’t stop a burglar, but it’ll stop the opportunists.

For persistent threats, layer up:
- Fail2Ban for auto-blocking
- Cloudflare for DDoS protection
- Regular audits to spot patterns


“” - proxyEscapeX - 13-04-2025

Kinda depends on your setup. If you’re just blocking IPs manually, yeah, it’s exhausting.

But tools like OSSEC or Suricata can auto-block based on behavior, not just IPs. Way more effective.

Also, keep an eye on your logs. Sometimes the same attacker slips up and reuses an IP.


“” - DeepMaskX - 13-04-2025

IP blocking is outdated if used alone. Hackers have too many workarounds.

Try combining it with:
- Captchas for login attempts
- Geo-fencing (block whole regions if you don’t need them)
- Threat intelligence feeds like AlienVault


“” - CloakSurfer - 13-04-2025

It’s a temp fix, but not useless. I’ve seen attackers give up after a few blocks.

For automation, I love pfSense + Snort. It’s a beast for filtering malicious traffic.

Also, consider blacklisting known bad IP ranges. Lots of free lists out there.


“” - MaskedVoyager77 - 13-04-2025

Wow, thanks for all the insights! Fail2Ban and Cloudflare keep coming up—def gonna try those.

Had no idea about honeypots or behavior-based blocking. Sounds way smarter than just ip blocking alone.

Quick follow-up: anyone use both Fail2Ban *and* CrowdSec together? Or is that overkill?

Also, geo-blocking seems like a no-brainer. Any downsides to that?

Appreciate the help!