Active tasks in sys-net

[bren...@mac.hush.com]

Hi all
Recently I have installed Qubes and started to read some docs but haven't found an answer to this.

I would know if there are applications or tasks in sys-net/sys-firewall that benefit of internet connection, because I see an active internet transmission before I begin to surf.

Thanks,

[Unman]

This would depend on what templates you are using, and how they are
configured. You can, if you wish, set custom iptables rules in sys-net
and sys-firewall to restrict traffic from those qubes, or deny it
completely.
At a minimum there is the clockVM which will look up time.
There is a function to check for updates - this is a service that you can
turn off. (Look in Global Settings in Qubes Manager.)
Fedora has (had?) a function to check for network connectivity.
Most of these can be removed/disabled.

You could run tcpdump in sys-net and capture the traffic if you want to
be absolutely certain of what is happening.