Description of problem:
Upgraded to Fedora 28 beta, and noticed gnome-session listens on tcp ports on all interfaces:
# netstat -tap|grep gnome-session
tcp 0 0 0.0.0.0:37381 0.0.0.0:* LISTEN 1367/gnome-session-
tcp 0 0 0.0.0.0:35115 0.0.0.0:* LISTEN 2088/gnome-session-
tcp6 4 0 [::]:33431 [::]:* LISTEN 2088/gnome-session-
tcp6 0 0 [::]:33435 [::]:* LISTEN 1367/gnome-session-
One of the above processes is gdm gnome-session, the other user gnome-session.
It's unclear to me why it listens on tcp for external interfaces at all.
It did not do so in Fedora 27 before upgrade.
Version-Release number of selected component (if applicable):
Fedora 28 Beta
Didn't try multiple installations, but would guess reproducible in default configuration.
Steps to Reproduce:
1. Upgrade to Fedora 28 from Fedora 27 with dnf system-upgrade. (Maybe also for clean reinstall?)
2. Log in
3. Check netstat -tap
gnome-session listens on tcp ports.
I would expect gnome-session doesn't listen on any tcp ports, which was the situation in Fedora 27.
Upgrade to gnome-session-3.28.1-1.fc28 fixed this.