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Cybersecurity · head to head

Cisco Duo vs Surfshark

Cisco Duo logo

Cisco Duo

Cybersecurity

Trusted access for all users, all devices

From
Free
Rated
-
Full reviewWebsite
Surfshark logo

Surfshark

Cybersecurity

Secure your digital life

From
$1.78/month
Rated
-
Full reviewWebsite

The short version

  • Only Cisco Duo has a free tier, so it costs nothing to try first.
  • Each has a real cost: Cisco Duo free tier limited to 10 users maximum; Surfshark smaller server network (4,500+ servers) compared to larger competitors like NordVPN
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Cisco Duo and Surfshark actually diverge.

Attributes where Cisco Duo and Surfshark differ
AttributeCisco DuoSurfshark
Starting priceFree$1.78/month
Pricing modelsubscriptionUnknown
Free tierYesNo
PlatformsWebWindows, macOS, iOS, Android, Linux
FoundedUnknown2018

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

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 Cisco Duo

Nothing recorded that Surfshark does not also cover.

Only in Surfshark

  • Unlimited devices
  • CleanWeb ad blocker
  • MultiHop
  • Camouflage Mode
  • NoBorders mode
  • Kill Switch
  • Bypasser split tunneling
  • Rotating IP

What people use each for

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

Cisco Duo

  • Eliminating phishing with passwordless authnot Surfshark
  • Implementing zero trust with device trustnot Surfshark
  • Protecting sessions from hijacking and theftnot Surfshark
  • Managing compliance for regulated industriesnot Surfshark

Surfshark

  • Vpnnot Cisco Duo
  • Privacynot Cisco Duo
  • Security Suitenot Cisco Duo

Where each one falls short

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

Cisco Duo

  • Free tier limited to 10 users maximum
  • Licenses must be purchased in 10-user increments (under 100 users) or 25-user increments (100+ users)
  • Pricing is per-user per-month with minimum purchase increments

Surfshark

  • Smaller server network (4,500+ servers) compared to larger competitors like NordVPN
  • Lower brand recognition compared to established VPN providers
  • Limited customer service availability in some time zones

Pricing, plan by plan

Cisco Duo

Free
  • FreeFree
    • Multi-factor authentication (MFA)
    • Seamless integrations
    • Authenticator app
  • Essentials$3/month
    • All Free features
    • Duo Directory
    • Phishing-resistant MFA
  • Advantage$6/month
    • All Essentials features
    • Identity intelligence
    • Cisco Identity Intelligence (ISPM, ITDR)
  • Premier$9/month
    • All Advantage features
    • Complete device trust
    • VPN-less remote access

Surfshark

$1.78/month
  • Starter$1.78/month
    • Unlimited simultaneous connections
    • 4,500+ servers
    • Basic VPN
  • One$3.59/month
    • VPN
    • Antivirus
    • Personal data leak alert
  • One+$4/month
    • All One features
    • Incogi included

Which should you pick?

Choose Cisco Duo if

  • You want to start without paying.
Cisco Duo review

Choose Surfshark if

  • You need unlimited devices.
  • You work on Windows, macOS, iOS, Android, Linux.
  • You also want cleanweb ad blocker.
Surfshark review

Questions people ask

Is Cisco Duo or Surfshark better?
Neither clearly leads. Cisco Duo starts at Free and Surfshark at $1.78/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cisco Duo or Surfshark?
Cisco Duo has a free tier; the other does not. Paid plans start at Free for Cisco Duo and $1.78/month for Surfshark.
Does Cisco Duo or Surfshark run on more platforms?
Cisco Duo runs on Web. Surfshark runs on Windows, macOS, iOS, Android, Linux.
Can I use Cisco Duo for free?
Yes. Cisco Duo has a free tier, so you can try it without paying. Surfshark starts at $1.78/month.
What is Cisco Duo best used for?
Cisco Duo is most often used for eliminating phishing with passwordless auth, implementing zero trust with device trust, protecting sessions from hijacking and theft, managing compliance for regulated industries. Of those, eliminating phishing with passwordless auth and implementing zero trust with device trust are not what Surfshark is typically brought in for.
What can Cisco Duo do that Surfshark cannot?
Surfshark covers Unlimited devices, CleanWeb ad blocker, MultiHop, Camouflage Mode.

Answered from the vendors’ own pages

Cisco Duo: How much does Cisco Duo cost?

Cisco Duo Free is $0/user/month (up to 10 users). Paid plans start at $3/user/month (Essentials), $6/user/month (Advantage), and $9/user/month (Premier). Billing is per-user per-month.

Source
Surfshark: Does Surfshark maintain a no-logs policy?

Yes. Surfshark does not log browsing history, visited IP addresses, bandwidth usage, or network traffic. This policy was independently verified by Deloitte in 2025.

Source
Cisco Duo: Is Cisco Duo free to try?

Yes, Duo Free offers multi-factor authentication and seamless integrations at $0/user/month for up to 10 users.

Source
Surfshark: How many simultaneous device connections does Surfshark allow?

Surfshark allows unlimited simultaneous connections on all subscription plans, enabling protection of every device in a household with a single subscription.

Source
Cisco Duo: What is the minimum purchase for Cisco Duo?

Organizations must buy licenses in 10-user increments for under 100 users, or 25-user increments for 100 or more users. Plans are modifiable at any time.

Source
Cisco Duo: What does the Advantage plan add over Essentials?

Advantage ($6/user/month) adds identity intelligence, Cisco Identity Intelligence (ISPM, ITDR), Duo Passport, session theft protection, Active Directory Defense, and risk-based authentication.

Source
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