Since latest Updates of AVM Router Firmware the Devices are sold with MESH Option but this FAILS! Background: Mesh should handle the best Connect between Router + Repeater and used Devices Mesh Service produces own Communication Traffic which is added to your default WIFI TRAFFIC! The Repeaters do NOT offer 3 or 4 seperated WIFI NICs for handling the Traffic If you buy new Repeaters look that they have minimum 4 Channels (2,4+5GHZ to Router and 2,4+5GHZ to the Devices like TV,Laptop and more.. If you have LAN Cables next to the Repeaters, you should prefer at the Repeater LAN-to-WIFI […]
Category: AVM
DSL ISP check daily speed
#dsl #telekom #speed #einundeins #router #settings do weekly #check the webinterface of your #Internet #connection somtimes #lower than you pay by #isp #provider #contract #malfunction :-( no #DSL100
Fritzbox: Easy USV UPS AVM 7490 Battery Power
If you use a Router with IP Phones you perhaps want to have a Power Storage for up to 60 Minutes to use IP Phone or WIFI on Power Failures?? Major Info: Check the Router DATASHEETS! the Battery Voltage on loading should never go over maximum!! Some Trafo wind up to 14Volts and more! This DESTROYS the DSL MODEM CHIP !!!! The 10 Cell AA Batterholder allow to connect 9 Cells! Connect the Wire to only 9th Connector 9x AA 1,26V let the Router work The Modem is protected cause the Circut runs under 12 Volts! 11,25 – 11,5V, the […]
Security: Harden DSL Routers and Networks against attacks
Last days there was a high count of news about the Bot Attacks against T-Com Telekom Router devices. To understand the behavior about this up comming security problems you should know following points : Every network supported device can be a goal for a attack ( Routers, Modems, PC, Fridges,IP-TV, IP Switches, IP-Cams…) You have to update the OS for each device monthly, if not supported by the manufacter, then dont buy! Try to get Opensource Hardware with Opensource Software for full access (ssh / console) to have full control Reduce the count of devices who are connected direct to […]
Fritzbox: Freezing Wifi if USB 3.0 is used
Today i was touched by a Bug of my fritzbox 7490, after installing a USB 3.0 Stick as NAS the Wifi connect was broken to all devices! After some search on net i found this post: http://avm.de/service/fritzbox/fritzbox-7490/wissensdatenbank/publication/show/1636_WLAN-Stoerungen-bei-angeschlossenem-USB-3-0-Geraet/ Background: The high magnetic frequency’s of USB 3.0 data transfer inside the cable or stick hangup the WIFI chips! It works like a WIFI JAMMER!! DONT USE A ROUTER AS NAS! If it fails or overheat all devices are offline!! It’s a really big joke that most Manufacter sell devices without TESTING!! I call it Banana Hardware..
Fritzbox: DHCP-IP Problems
Problem:Probleme mit IP-Adressvergabe ueber DHCP, wenn auf dem gleichen Rechner unterschiedliche Betriebssysteme laufen Beschreibung: Wird ein Rechner mal unter Linux und mal unter Windows betrieben, so kann es passieren, dass der Rechner unter einem der beiden Systemen keine IP-Adresse mehr zugewiesen bekommt. Waehlt man sich per Telnet auf der Fritzbox ein, so sieht man dort die Fehlermeldung “DHCPD no lease found”. Um dieses Problem zu vermeiden, muss der DHCP- Client unter Linux wie folgt korrekt konfiguriert werden: Loesung : In der dhclient.conf des Client-Rechners muss “send dhcp-client-identifier 01:<mac-addresse>;” eingetragen werden. Anschliessend auf der Fritzbox den multid mit “killall multid” beenden, das lease-file […]