Agor76  Freshman Member

Hi Dunham, I'm glad to see that you too solved the issue. The solution proposed on the apple board isn't strictly related to the Zyxel's routers but it did lead me to fix the issue. Editing an ikev2 profile with AES256/SHA2_256 and DH19 as DH group did the trick for me Regards Agor

Hi Dunham, here you go: https://discussions.apple.com/thread/255158874?answerId=259755811022&page=2 Just see his last post Agor

Hi Dunham, yes, DH19 doesn't seeems to help by itself. But I've had some spare time and was able to try what JoshHibschman has suggested in his latest post on the apple board. In short, I've deleted every previous VPN's profile and created a new one using iMazing Profile Editor following his directive. Rekeying process now…

Hello Dunham, It's seems to be a wide known issue. Please take a look here: I've been having this issue since I've upgraded to Sonoma. My ikev2 VPN is dropping every 24 minutes due to a rekeying failure. Didn't have so much time on trying to fix this, but it seems that following one of the latest post in the forum linked…

Hi raufozturk, are you having this issue since the beginnig or is it something related to the latest firmware ?

Hi smkjones, I've tested 2FA emails on SSL VPNs using a Flex 200 and it works as expected, firmware 5.36 ABWD.1. Didn't work using the previous firmware I know that It's not very helpful but I gave it a try Regards

My Flex 700s are running since 5 days and didn't have any issue so far.

You're welcome

Hi USG_User, It may mostly depends on how many simultaneous users are connecting to the firewall via SSL VPNs and 2FA usage. I've also have a Flex 700 with 23 ssl vpn users configured and very few of them (no more than 3) connecting simultaneously that works fine with 5.36. The affected Flex 700s are having heavy ssl VPNs…

Same here, Firmware V5.36(ABWD.0)ITS-23WK17-0504-230401495D, which Zyxel gave me for testing, it's now running since 4 days and I didn't have any issue so far. It has been testing with more than 15 SSL VPN users connected Agor

I can too confirm that seems to be strictly related to SSL VPN and 2FA emails confirmation. I hadn't any issue, so far, on another Flex 700 with no remote users configured and fw

hello again Andreas, I've been contacted by Zyxel_Cooldia and he told me that I'll receive a new firmware to test by tomorrow. He also told me that they found out a possible issue with 2FA which should be related with this case. I also don't have an USB-to-RS232 cable right now Agor

Hi AndreasZyxel, I've tried the latest weekly firmware but still no luck! Same issues here.

Thanks !

Thanks Huba and lytespeed as well everybody else who joined the thread. I ran some tests all over the weekend and found out that having an high number of remote vpn users makes the firewall crash on 5.36. As wrote before, no issue on 5.35. I can also confirm that 2FA emails are not being sent to the users but at the same…