Hello Ganesh,
As per my knowledge there are two ways how you can look for gateway mode:
- CLI
- Management Interface
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CASE 1 - CLI
As I know via CLI are two methods:
Method 1: impctl gateway show
The output in my lab as below:

Another way how you can check the gateway via cli is by following the steps below on the Method 2:
>> impcfg
>> Manage SecureSphere Gateway
In this case the WAF One Box is in Bridge IMPHVA Mode:
Output:

If you want to change the mode of the Gateway:
>> Manage SecureSphere Gateway
>> Change Operation Mode
Output:

CASE 2 - Management Interface
You can find on the following path:
Main > Setup > Gateway

I hope it will help and is the desired output.
Kind Regards,
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Olgerta Prendi
Cyber Security Specialist
S&T AG
Tirana
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