Connection drop in zywall 1100 and vpn1000 and zywall110

milo
milo Posts: 7  Freshman Member
First Comment First Anniversary
edited April 2021 in Security
Hello all.  i have a problem, long time never solved. I  have a one zywall 1100, zywall 110, VPN1000, ad i have the same problem in all the device. I use to connect in L2TP, and all is great. But after a while, with no rules seems, i get the Number of Login Users  more   bigger then the VPN Status.  Like user connect 170 and 30 vpn status.I let 3 connection for each users and i see all of them with 3 connection open.  When this some people can still use, some others can't connect. The only way i have to fix is reboot the device and all get back works perfectly. I also ask a Zyxel approved engeneer to solve this problem but not  solved. This problem happend to me with all the 3 device i have. I have all last firmware in all the device. It append random, can be one time a day, 4 time a day, or one time after 3 days. Seems there is nothing that can explain it. I did connect to a modem that already get the connection  and nat. If anyone have some idea, is really very welcome.

All Replies

  • lalaland
    lalaland Posts: 91  Ally Member
    First Answer First Comment Friend Collector Sixth Anniversary
    It would be helpful if you can take screenshots ;)
  • milo
    milo Posts: 7  Freshman Member
    First Comment First Anniversary

  • milo
    milo Posts: 7  Freshman Member
    First Comment First Anniversary
    Anyone knows how to solve this issue?
  • Zyxel_Emily
    Zyxel_Emily Posts: 1,416  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 1000 Comments

    Hi @milo,

    The list of Login Users contains not only l2tp users but also other login type such as http/https and console.

    To check if the number of “l2tp” users are exactly the same as the number of L2TP VPN connection, you can go to MONITOR > System Status > Login Users to check the number of users with type “l2tp”. Check if the IP addresses of type “l2tp” match secure gateways of L2TP VPN in  MONITOR > VPN Monitor > IPSec.




  • milo
    milo Posts: 7  Freshman Member
    First Comment First Anniversary
    @ Zyxel_Emily
    Hello emily. I did and as you say, and you can see only me in https, all is l2tp.  Happend always and always. i need to reboof to fix, i did not find any other way. i hope can exist a way to fix. i already put automatic reboot 2 times per day,  but is not a solution,is  just a patch, but in the moment i have more in one day , i need to follow always the server to avoid the mistake. Really hope can exist a solution
  • Zyxel_Emily
    Zyxel_Emily Posts: 1,416  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 1000 Comments

    Hi @milo,

    To check if there are duplicate connections from the same L2TP VPN client, could you give me the web GUI access of your VPN1000 in private message?

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