Setting up "Serial ports" in VirtualBox for Fedora guest

1. Run VirtualBox and select the desired VM
2. Select "Serial ports" from the right panel
3. Choose "Port 1" tab
4. Set Port 1 as follows:

Port Number: COM1
Port Mode: Host Device
Port Path: COM1

With this setting you cannot use the serial port COM1 simulataneously from host (Windows) and guest (Fedora).

Setting up "Bridged networking" in VirtualBox for Fedora guest

1. Run VirtualBox
2. Create a new VM
3. On the right panel select "Network"
4. In the "Network" dialog box, after selecting "Adapter 1" tab, set as follows

Enable Network Adapter: checked
Adapter Type: IntelPRO/1000 MT Desktop (82540EM)
Attached to: Bridged Adapter
Name: Intel (R) PRO/1000 MT Network Connection

5. And start the VM