kukuman  Freshman Member

You can refer to this Zyxel tutorial - "How to Configure Site-to-site IPSec VPN Where the Peer has a Dynamic IP Address?".

Hi @DanieleRiccio Can you check the port 2158 had been turned on your USG1100 and windows server? Because SSO operates on this port.

Hi @warioibm What is the symptom of WiFi? Did you encounter that symptom after upgrading to 4.62? 

You may enter Web-GUI : Monitor > VPN Monitor > IPsec to check your IPsec VPN connection.

If L2TP server works fine wth win10 machines, would you mind to check your macOS L2TP setting? You may refer to this link: https://kb.zyxel.com/KB/searchArticle!viewDetail.action?articleOid=015535&lang=EN

Did you check the 20 tunnels all be occupied while you establish the third, fourth PC's IPsec VPN connection? Because I remember Monitor > VPN Monitor > IPsec VPN can check the VPN client connection status. Or you can change the IPsec VPN of establishing connection order e.q.try the third, fourth PC establish IPsec VPN…

Have you checked the IPsec VPN IP ranges of your USG40 is enough? and checked concurrent IPsec VPN session number of USG40? If the VPN IP range is too small or over maximum IPsec VPN concurrent tunnel may lead to this symptom. I found its specification may give you some reference.…

@VPNRob What is Plume WLAN? and how it works?Could you share your topology? I'm interested in it very much.

@imaohw Have you ever try to release and renew your client device IP address when this symptom occurred?

Did you try to manually reconfigure your AP profile then reboot your USG40w and AP again?https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=015545&lang=EN

Hi @danyedinak After you upgrade to V4.60(AALB.1),what is your update status now?I think you may manually config your AP profile and reboot your USG40W again.Yon can refer to this KB which I found on Zyxel.

Hi @EricNepean I use gmail notification on my USG60, it works fine now and can help me monitor my USG60 daily status. If you would like to use it, too. You can refer to this link: https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=015984&lang=EN Hope this can help you!

Hi, I used G1 and FW version V1.00(ABSC.4)C0 also. In my environment there are three devices, I combined WiFi scheduling and parental control to limit two WiFi devices' time period of accessing the internet. During the blocked time period, the two WiFi devices were blocked couldn’t access the internet but the laptop PC…

@Mforti It's a great debug experience and very useful for me also. 

@MatteoPSC The only difference is windows OS version. SSL VPN connection drop happened when you using RDP on Win8.1 but win 10 can't.Did you consult with Microsoft for further suggestion?