MacOS 10.15 Catalina require a 2048bit certificate encryption.
In the last message of Emily for ATP 200 :
Have you a BETA test firmware for Zyxel ATP 500 ?
The firmware for ATP 500 is sent to you in private message.
I test the BETA firmware V4.35(ABFU.1)ITS-WK46-r90773 since 24h, it's work with MacOSX Catalina 10.15 (2048 bits encryption), but it's very slow.
The CPU used it's at more than 90% with only 20/30 users and 600 sessions.
Is optimization possible ? Wait and see
I can imagine that device issue/validate a certificate with RSA key 2048 bits would be slower than before base on same hardware platform.
Maybe you can add well-knows https site into device exclude list. i believe that it would be helpful regarding to your case.
BTW, If you type CLI "show cpu average", which one caused the high CPU usage?
Yes, i have in SSL Inspection whitelist the confiances websites with the most connections like Windows Update, office365 ...
For the moment, i disable SSL Inspections for Catalina Mac IP.
me too problem with ATP200.
I currently use mac osx 10.14 (Mojave)
A solution is needed.
MAC os 10.14 should not have issue. the limitation is on MAC OS 10.15.
Here is the Apple announcement;
As lalaland mentioned, it should not happen on MacOS 10.14.
However, if you are planning to upgrade to MacOS 10.15, the firmware upgrade will be needed. I’ll sent you the firmware in private message.
I downloaded the firmware and i will test with Mac OSX 10.14 and 10.15.