Understanding Z-tunnel 2.0 is hard hurdle for everyone, at least for me.
Hence I repeatedly read and read kbs.
On the all way down to the description, there is one point I cannot understand.
Here is the ones.
MTU for Zscaler Adapter : (Optional) This option is only applicable if you’re using Z App version 2.1.2 or later. Zscaler recommends only configuring this setting if you experience IP fragmentation when using Z-Tunnel 2.0 with the default value of 0. This setting allows you to decrease MTU to avoid IP fragmentation. To configure this setting, enter any value from 68 to 1500.
I can understand the issue with IP fragmentation, it is general solution.
The problem is “Zscaler Adapter”.
I have assumed Windows Zscaler Adapter is only for Route Based, not LWF scenario.
What deepens my confusion is following description.
For the Windows version of Z App, Z-Tunnel 2.0 (in DTLS mode) changes the MSS for the TCP stream based on the configured MTU value, because it uses the Windows filter driver instead of the Zscaler adapter.
My confusion reached the bottom of my brain and found a dearth of my personal IT knowledge.
Z-tunnel 2.0 uses or not uses Zscaler Adapter? DTLS only? Does it mean non-DTLS 2.0 tunnel will fall back on non-LWF driver?
Kindly someone help let me understand what these description means.