Nessus

VS

Pi-hole

Cybersecurity Comparison

Nessus vs Pi-hole: Side-by-Side Comparison

Nessus
Pi-hole
Rating
★★★★★★★★★★
4.6/5
★★★★★★★★★★
4.7/5
Free Tier
Yes
Yes
Trial Days
7-day trial
None
Pricing
Nessus Essentials free; Professional from $3,990/yr per scanner
Free (open source)
Company
Tenable
Pi-hole LLC
Founded
1998
2014
Best For
Vulnerability management teams needing the most comprehensive CVE scan coverage
Home lab enthusiasts wanting network-level protection for every connected device

Pros & Cons

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Nessus

Over 170,000 plugins covering the most vulnerability checks of any scanner
Compliance audits check configurations against CIS, DISA STIG, and PCI DSS
Agentless scanning requires no software installed on target systems
Nessus Essentials is free for up to 16 IP addresses for learning use
Plugin update frequency averages less than 24 hours for new CVE coverage
Essentials free tier limited to 16 IPs making it impractical for real networks
False positives require manual verification before presenting to clients

Pi-hole

Network-wide DNS blocking stops ads and trackers on all connected devices
Completely free and open-source with active community development
Admin dashboard shows detailed query logs and block statistics in real time
Works on smart TVs, gaming consoles, and IoT devices automatically
Runs on Raspberry Pi hardware costing under 50 dollars one-time
Requires Raspberry Pi or server setup which intimidates non-technical users
Breaks some websites and apps that depend on ad network domain resolution

Use Case Analysis

Which is better for Endpoint Security?

Both Nessus and Pi-hole support Endpoint Security workflows. Pi-hole has a slight edge with a 4.7 rating and Free network-wide DNS ad blocking covering every device without per-device setup. If Endpoint Security is your primary use case, Pi-hole is the safer pick.

Which is better for Privacy?

Both Nessus and Pi-hole support Privacy workflows. Pi-hole has a slight edge with a 4.7 rating and Free network-wide DNS ad blocking covering every device without per-device setup. If Privacy is your primary use case, Pi-hole is the safer pick.

Which is better for Encryption?

Both Nessus and Pi-hole support Encryption workflows. Pi-hole has a slight edge with a 4.7 rating and Free network-wide DNS ad blocking covering every device without per-device setup. If Encryption is your primary use case, Pi-hole is the safer pick.

Which is better for Antivirus?

Both Nessus and Pi-hole support Antivirus workflows. Pi-hole has a slight edge with a 4.7 rating and Free network-wide DNS ad blocking covering every device without per-device setup. If Antivirus is your primary use case, Pi-hole is the safer pick.

Which is better for Two Factor Authentication?

Both Nessus and Pi-hole support Two Factor Authentication workflows. Pi-hole has a slight edge with a 4.7 rating and Free network-wide DNS ad blocking covering every device without per-device setup. If Two Factor Authentication is your primary use case, Pi-hole is the safer pick.

Verdict

Pi-hole edges out Nessus with a 4.7 vs 4.6 rating. Pi-hole's main advantage: Free network-wide DNS ad blocking covering every device without per-device setup. That said, Nessus may still be the better choice if Vulnerability management teams needing the most comprehensive CVE scan coverage.

Try Them Yourself

The best way to choose is to trial both. See full details on each:

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