Peter2  Ally Member

DHCP is activated with option DNS proxy ? I myself always define a limited number of IP adresses for DHCP and give the static ones outside of this segment .

Have you activated the logs for DHCP , System and PPPoE in the maintenance log setting menu ?

What is the value of the DHCP lease time ? It should be 1 day at least .

In the wireless section there is a maximum of 32 clients , so may be you cannot give more names ? You can export your config files and search there for "HostName" and you see all your given device names bind to MAC adress . The Problem is that there can be old Names of devices you dont have anymore you can delete old or…

Once i had a lot of Ping floods from Wan and tried to do something . I made a ACL Rule in the firewall section to block ICMP pings or limit Answers per Minute for service "ICMP:8 /Echo-request" … You can reject or drop (no Answer) the ping . https://www.akamai.com/glossary/what-is-a-ping-flood-attack

The destination 100.69.0.0 is from Member in a cgnat not reachable from Wan . The source 192.168.1.57 is local . Can it be located , may you could see it in the logs or in the information menu . Is there an Infection ? May be possible to control Wlan Members and bind them to MAC Adresses .

First you have to login as admin not as a user . But i think you have a special "branded" firmware from your ISP and so you have not all options . It is better for the ISP for always correct configuration . If the Router is in property of your ISP you dont have the right to force the Installation of the regular firmware .

You can try to deactivate the firmwarecheck via ssh using tool putty for example . If it is changed you can update the other version in the web gui . Here is a link : https://community.zyxel.com/en/discussion/11497/xmg3927-b50a-firmware-version

You should give the zycel a IP adress of the fritzbox net may be easier to do with DHCP broadband / WAN Routing IP OE Adresses and DNS automatic connect via WAN Port

But which device is in front ? A modem or a Router sucessfully connected to the Internet ?

There is always a risk of sip Port errors when you use VoIP twice and parallel with a device behind a Router . The best way with Fritz box is to make the sip login for all Numbers with the fritzbox in front and these special ones define as Lan IP telephones . Then you connect with the extern device to the fritzbox like to…

Ok, this is not nice for the german users with german version . But it is no Problem to use the "C" Version with german Telekom based VDSL . Look into the specs of VDSL Vectoring - it includes both Annex A and Annex B tables ! I use it in germany like this . It could only be a Problem with classical DSL, but it is possible…

If the separation with interface grouping is not enough for you and and Vlan only works if the devices are configured for Vlan too you can you use a managed switch that separates Vlan segments for your Net physically over the Lan ports like a Netgear GS305E Managed Switch . I dont think that you really get 10 Gbit behind…

https://www.zyxel.com/global/en/support/download?model=DX3301-T0 I use this site because the regular support site has a kind of bug and does not list the firmware only other things . A small difference between "DX3301-T0" vs. "dx3301-t0" makes it out … There is a new firmware from Nov 29 5.50(ABVY.5.4)C0 and i just…