Block and BlockBox appliance come with the ability to capture network data used in dependency mapping.
Majority of Linux distributions work out of the box, however some require additional configuration.
Linux traffic monitor takes advantage of AF_PACKET socket for packet capture.
On some distributions af_packet module is not loaded on startup. In order to confirm whether that is the case, you can run the following command on most Linux distributions, as they include the config parameters used to compile the kernel:
`grep -x 'CONFIG_PACKET=[ym]' "/boot/config-$(uname -r)"`
If CONFIG_PACKET is built as a module but is not loaded, you need to load the module on startup by doing the following:
1. Verify module is not loaded: `lsmod | grep -i af_packet` - you should not see a match
2. Create the config file: `echo "af_packet" > /etc/modules-load.d/af_packet.conf`
4. Verify module is now loaded: `lsmod | grep -i af_packet` - you should see a match