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Forescout · eyeSight / eyeControl · Lesson 10 of 10

Forescout interview: 16 tickets + the ISE dictionary

You will be asked ISE words in a Forescout shop. Translate, then prove with inventory + policy hit — not with a reboot.

Updated 2026-08-18·20 min read·L2 primary·Quiz at end

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The ticket

“Show me Live Logs.” There are none. You open Asset Inventory and the host policy tab. That is the right Forescout answer.

Quick interview answer

Forescout is visibility-first NAC. ISE is RADIUS-first NAC. I use Forescout to see agentless devices and ISE to authenticate users. I never scan OT blind and I never give two products the same port.

Hero · two languages
Forescout and ISE as two languages for NAC
Say their word, then your proof.
Lab data · dummy only

Enterprise Manager fs-em 10.10.10.30 · Appliance fs-app1 10.10.10.31 · span/mirror on sw-access-01 · same LAN 10.20.30.0/24 · Priya 10.20.30.80 · printer 10.20.30.60 · OT PLC 10.50.1.10. Not a live customer.

Dictionary

ISEForescout
PANEnterprise Manager
PSNAppliance
Live LogsHost / policy log
ProfilingClassification
Policy setPolicy tree
dACL / VLANVirtual FW / switch plugin
pxGrideyeExtend
Unknown endpointEmpty Function

What to lab

Span, classify Priya + printer + fake PLC, inspect policies only, one camera Virtual FW, one eyeExtend story even if mocked.

16 questions

Q1

What is eyeSight?

Direct
Discover/classify, preferably agentless.

Q2

Empty inventory?

Direct
SPAN VLANs, not the policy.

Q3

Scan OT?

Direct
No.

Q4

Unknown hosts?

Direct
Notify, do not block.

Q5

Laptop vs camera owner?

Direct
ISE vs Forescout — one each.

Q6

Virtual FW vs plugin?

Direct
Appliance path vs switch CLI.

Q7

eyeExtend?

Direct
Bus to ISE/FW.

Q8

Two VLANs flapping?

Direct
Two owners.

Q9

OUI-only group?

Direct
Too weak.

Q10

EM down, span still up?

Direct
Visibility may continue; console/policy edits stop.

Q11

When enforce?

Direct
After inspect is clean.

Q12

Printer in Windows rule?

Direct
Order / condition.

Q13

WMI Domain Admin?

Direct
No — least privilege.

Q14

Prove a host hit?

Direct
Host → Policies tab.

Q15

ISE Live Logs equivalent?

Direct
Host/policy log.

Q16

First week?

Direct
See only.

Weak vs strong

WeakStrong
NAC means 802.1X everywhereUsers 802.1X, OT passive
Block UnknownNotify Unknown
Scan to be sureBetter SPAN

Practice

Speak Q2, Q3, Q5 in 90 seconds with 10.20.30.80 and 10.50.1.10.

Traps

Menus move between 8.x and 9.x. Confirm Channels / Policy Manager names on your train.

Knowledge check

Judgment items. One best answer. Reasons send you back to the matching section.

Q1

ISE Live Logs ≈ Forescout…

Correct: a. Dictionary.
Q2

Empty inventory first check?

Correct: a. Q2.
Q3

Scan the PLC VLAN?

Correct: a. Q3.
Q4

Unknown action?

Correct: a. Q4.
Q5

Laptop enforcement owner?

Correct: a. Q5.
Q6

First week of a Forescout install?

Correct: a. Q16.

Forescout class series: Three products · First day · Discovery · Classification · Policy · Enforcement · Switch plugin · eyeExtend · OT / IoT · vs ISE + interview

Sources

Related: Forescout evidence desk · session factory · Cisco ISE series.