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Networking · head to head

Nebula vs Palo Alto Networks

Nebula logo

Nebula

Networking

Certificate based overlay network from Slack, with identity and firewall rules carried in the certificate

From
Free
Rated
-
Full reviewWebsite
Palo Alto Networks logo

Palo Alto Networks

Networking

Enterprise cybersecurity platform

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Nebula has a free tier, so it costs nothing to try first.
  • Each has a real cost: Nebula the open source project has no user interface, no enrolment workflow and no revocation service, so certificate issuing, distribution and expiry become scripts you write and then have to keep working.; Palo Alto Networks enterprise-focused pricing model
  • They diverge on capability: Nebula covers Certificate carried identity, Palo Alto Networks covers Advanced threat prevention.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Nebula and Palo Alto Networks actually diverge.

Attributes where Nebula and Palo Alto Networks differ
AttributeNebulaPalo Alto Networks
Starting priceFreeOn request
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsLinux, macOS, Windows, iOS, Android, FreeBSDCloud, On-premises, Hybrid
FoundedUnknown2005

Identical on both: user rating (Not yet rated), category (Networking).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Nebula

  • Certificate carried identity
  • Group based host firewall
  • Lighthouse discovery
  • Noise protocol encryption
  • Unsafe routes
  • Managed option

Only in Palo Alto Networks

  • Advanced threat prevention
  • Threat detection and response
  • Cloud security
  • Endpoint protection
  • Network security
  • API protection
  • Incident response
  • Threat intelligence

What people use each for

The jobs each tool is most often brought in to do.

Nebula

  • Flattening a network across several clouds and datacentres without VPC peering or route tablesnot Palo Alto Networks
  • Very large fleets where a central policy service on the connection path is unacceptablenot Palo Alto Networks
  • Environments that already run an internal certificate authority and want the network to use itnot Palo Alto Networks
  • Replacing per host iptables rules with policy written against roles that follow the hostnot Palo Alto Networks

Palo Alto Networks

  • Enterprise network security and threat protectionnot Nebula
  • Cloud-native application protectionnot Nebula
  • Identity and access securitynot Nebula
  • Security operations and incident responsenot Nebula

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Nebula

  • The open source project has no user interface, no enrolment workflow and no revocation service, so certificate issuing, distribution and expiry become scripts you write and then have to keep working.
  • Revoking a compromised host means distributing a blocklist entry to every other host and reloading them, which is a fleet wide operation rather than a click, and easy to get wrong under pressure.
  • Changing a host group membership means reissuing and redeploying its certificate, so policy changes are a deployment rather than a configuration edit.
  • There is no identity provider integration or single sign on in the open source version, so it maps well to servers and badly to a fleet of user laptops.
  • NAT traversal is best effort and hosts behind symmetric NAT need a relay configured deliberately, so connectivity failures show up as intermittent rather than immediate and are awkward to diagnose.

Palo Alto Networks

  • Enterprise-focused pricing model
  • Complex implementation required

Pricing, plan by plan

Nebula

Free
  • NebulaFree
    • Full functionality under the MIT licence
    • No host limit
    • You operate the certificate authority and lighthouses
  • Defined Networking$undefined/month
    • Hosted control plane and enrolment
    • Managed certificate lifecycle and revocation
    • Policy and DNS interface

Palo Alto Networks

On request
  • Enterprise$undefined/year
    • Threat prevention
    • Detection and response
    • Cloud security

Which should you pick?

Choose Nebula if

  • You need certificate carried identity.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, iOS, Android, FreeBSD.
  • You also want group based host firewall.
Nebula review

Choose Palo Alto Networks if

  • You need advanced threat prevention.
  • You work on Cloud, On-premises, Hybrid.
  • You also want threat detection and response.
Palo Alto Networks review

Questions people ask

Is Nebula or Palo Alto Networks better?
Neither clearly leads. Nebula starts at Free and Palo Alto Networks at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nebula or Palo Alto Networks?
Nebula has a free tier; the other does not. Paid plans start at Free for Nebula and On request for Palo Alto Networks.
Does Nebula or Palo Alto Networks run on more platforms?
Nebula runs on Linux, macOS, Windows, iOS, Android, FreeBSD. Palo Alto Networks runs on Cloud, On-premises, Hybrid.
Can I use Nebula for free?
Yes. Nebula has a free tier, so you can try it without paying. Palo Alto Networks starts at On request.
What is Nebula best used for?
Nebula is most often used for flattening a network across several clouds and datacentres without vpc peering or route tables, very large fleets where a central policy service on the connection path is unacceptable, environments that already run an internal certificate authority and want the network to use it, replacing per host iptables rules with policy written against roles that follow the host. Of those, flattening a network across several clouds and datacentres without vpc peering or route tables and very large fleets where a central policy service on the connection path is unacceptable are not what Palo Alto Networks is typically brought in for.
What can Nebula do that Palo Alto Networks cannot?
Nebula covers Certificate carried identity, Group based host firewall, Lighthouse discovery, Noise protocol encryption. Palo Alto Networks covers Advanced threat prevention, Threat detection and response, Cloud security, Endpoint protection.

Answered from the vendors’ own pages

Nebula: Does it use WireGuard?

No. Nebula predates the common WireGuard mesh tools and uses the Noise protocol framework with its own certificate format.

Palo Alto Networks: How much do Palo Alto Networks products cost?

Palo Alto Networks does not publish pricing on their main website. Customers must request a demo, trial, or contact their sales team directly to receive custom pricing based on specific security needs and deployment scale.

Source
Nebula: Can I run it without Defined Networking?

Yes, entirely. Defined Networking sells the control plane conveniences, not the network itself.

Nebula: How do I revoke a host?

Add its certificate fingerprint to the blocklist in the configuration of the other hosts and reload them. There is no online revocation check.

Nebula: Is it a good fit for laptops?

Less so than the identity provider based tools. There is no single sign on, so every laptop needs a certificate issued and renewed by whatever process you build.

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