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  • Hi to all!My problem was solved by @Zyxel_Stanley in the following way: My configuration followed this guide: https://support.zyxel.eu/hc/en-us/articles/360001390654-How-to-configure-L2TP-behind-NAT What I had to change, was:Set the local policy at Ipsec-VPN to 0.0.0.0 and disable the NAT 1:1 (from ISP-Router Public ->…
  • Hallo, Christian! Hello, Christian! Danke für deine ausführliche Anleitung :), aber das löst mein Problem ebenfalls nicht!Thank you for this detailed instructions :), but my problem still isn´t solved. Jegliche Verbindung von LAN1 Netzwerk ins Internet funktioniert und hat immer funktioniert! Any connection from LAN1…
  • Hello to all again!This is the shematics of our configuration: Working internetconnection from LAN1 Network, but no DNS from ZYWALL, only directly entered in LAN1 DHCP Configuration: !! ZyWALL gives NO DNS, and that´s my problem, because I cannot resolve any hostnames from inside USG40. I can not download firmware for APs,…
  • Hi, @lan31,yes, I have a 1:1 NAT set, because our field staff connects vie L2TP/IPSec and the USG40 is behind the ISP Router.
  • Hi to all!I have found the following symptom now: * All DNS queries from inside LAN1 are successful, as they have the source 192.168.2.100 (WAN1 IP). * DNS-queries from USG itself have timeouts, because they have the source xxx.xxx.xxx.xxx (ISP-Routers public IP) Maybe any new idea? Thanks i.a.
  • Thank you, @lan31!Good idea, but here is my IP overview. It´s not the problem.
  • Hi, @Zyxel_Stanley, thank you for your help! My DNS settings (sorry, it's in German): My situation is as follows:- USG40 is behind the main router from our ISP- we use L2TP/IPSec for VPN-Connections- the internal network is working as expected, except of DNS, which I additionally to System>DNS had to enter manually into…
  • @Zyxel_Cooldia, thank you for your reply, but, as mentioned in post 1, I have two entries for "Domain Zone Forwarder" - the DNS-Servers of my ISP. However, from the USG40 they seem not to be acknowledged.
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