Does Techclick provide career and interview support?

Yes. Every Techclick course includes career support — resume review, interview preparation and mock interviews. Techclick is a training provider and does not guarantee employment, placement or any particular salary; outcomes depend on individual effort and employer decisions.

Which courses does Techclick teach?

Palo Alto, Zscaler, F5 (LTM, ASM), Fortinet, Checkpoint, CCNA/CCNP, Microsoft Azure, and AI for cybersecurity professionals. All courses are instructor-led with live labs.

Are the classes online or in-person?

All classes are live online (instructor-led) with recordings shared on the Techclick LMS at ai.techclick.in. Hands-on labs run in browser-based simulators — no setup required.

Do I get a certificate after the course?

Yes. Every Techclick course ends with a proctored online exam at exam.techclick.in. On passing, you receive a verifiable digital certificate.

What is the fee and how do I enroll?

Course fees vary by vendor track. WhatsApp +91 92772 29456 or email techclick.techclick@gmail.com to get the current batch schedule and pricing.

Are there free practice quizzes?

Yes. Free daily practice quizzes for Palo Alto, Zscaler, F5, Fortinet, Azure and more are available on techclick.in and exam.techclick.in.

ZCC Z-Tunnel 2.0 vs 1.0: Which One Is Dropping Your SaaS

3 days ago
2 min read

Zscaler network security troubleshooting lab — Zscaler · Techclick CLI troubleshooting lab

Outlook works. A UDP-heavy SaaS voice app dies only when ZCC is on. Disabling ZCC fixes it.

This is a live-ticket style lesson from Techclick Infosec. You will isolate the fault with CLI first, then prove the fix with one clean packet or log.

What you will be able to do

Name the first CLI command to run on Zscaler for this ticket
Separate the layer that is actually broken from the layer people blame
Apply one scoped fix instead of a global disable
Prove the ticket closed with a session, log, or counter

Quick answer

Z-Tunnel 1.0 is HTTP/S proxy-ish. Z-Tunnel 2.0 can carry more than TCP 80/443. If the app is UDP or a non-standard port, 1.0 will silently fail.

Why this ticket shows up

Many tenants still have a mix of tunnel versions. A user on 1.0 cannot send the packets the SaaS needs.

Symptoms operators actually see

TCP 443 apps work, UDP or high ports fail
Only some laptop images fail
ZCC about page shows Tunnel 1.0
Works on a colleague with 2.0

CLI first — copy this block

Run these on the Zscaler device or console named in the ticket. Do not skip the first show command — it tells you which later command matters.

# Windows
reg query HKLM\SOFTWARE\Zscaler
powershell -c "Get-NetTCPConnection -OwningProcess (Get-Process ZSATunnel).Id"
findstr /i "Tunnel Version Z-Tunnel" %ProgramData%\Zscaler\*.log

How to read that output

Read the tunnel version from the ZCC log or UI. If it is 1.0 and the app is not HTTP, you found the design limit, not a random bug.

Triage order

Confirm the app protocol (UDP? custom port?).
Read tunnel version on a working and a failing laptop.
Move the failing user to a 2.0 forwarding profile.
Bypass the app only if 2.0 is not approved yet.
Do not disable ZCC as the permanent fix.

Classic traps

What you see	Real cause	Fix
Disable ZCC	User is on Tunnel 1.0	Upgrade forwarding profile
Open a Zscaler SEV1	This is expected 1.0 behavior	Change the profile
Reinstall Office	The failing app is UDP voice	Wrong layer

Proof the ticket is closed

About page shows Z-Tunnel 2.0
Voice app works with ZCC on
ZIA or ZPA still sees the user

Say this in an interview

I ask which Z-Tunnel version the laptop is on before I debug a non-HTTP app through ZCC.

Need the full vendor lab, mock interview, and production runbooks? Techclick trains Palo Alto, Zscaler, F5, FortiGate, Check Point, Cisco ISE, Azure and routing with live CLI — start at https://www.techclick.in/