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Author: Marek Moravcik

Enabling USB Wi-Fi dongle adapter on VirtualBox VM

When we have Wi-Fi adapter in our PC, we may use it as a network interface of VM, but the VM will recognize it just as another wired interface. But there is possibility to connect an USB Wi-Fi dongle adapter and enable it to the VM. VM then will see dongle as native USB Wi-Fi adapter and it allows to work with WiFi networks natively.

For example, we have the TP-LINK Archer T2UH USB dongle, Windows 10 as base system, Lubuntu 19.04 as the virtual machine and VirtualBox 6.0.8.

Set language on Cisco SPA 502G

This post is relevant to all Cicso SPA phones, which have “G” letter in their names. “G” means global (that you can put there languages), not gigabit ethernet (all phones have 100 Mbps interfaces).

First of all, you need to download language files from cisco support page. They are XML files and look like “spa50x_30x_en_v756.xml”. This is for english language. Important is, that you must have two files – for your desired language and for english language. Then set up TFTP server and put there files.

Enabling traceroute on Cisco ASA


There are three steps to enable traceroute:

  1. In policy map “global_policy” in class “inspection_default” you need to add “inspect icmp” and “inspect icmp error”
  2. In policy map “global_policy” in class “class_default” you need to add “set connection decrement-ttl”
  3. On your oudside interface, you need add access list, that permits ICMP with “time-exceeded” on ingress direction

There is code, that you can paste in your ASA firewall:

policy-map global_policy
  class inspection_default
    inspect icmp
    inspect icmp error
    exit
  class class-default
    set connection decrement-ttl
    exit
  exit
access-list OUTSIDE-IN extended permit icmp any any time-exceeded