On 12/3/20 10:57 PM, Ed Greshko wrote:
The virbr0 interface is the interface between your system and any
qemu/kvm Virtual Machines you
deploy. This is an "internal" interface not connected directly to the
Internet.
I've never heard of this. I'm not sure, but this seems like something I
don't use, at least not explicitly. Is this something that I can remove
from the system, or at least turn off (so it won't use CPU), Or is this
"under the hood" of things I do use?
-bash.3[~]: firewall-cmd --info-zone=public
public (active)
target: default
icmp-block-inversion: no
interfaces: eno1
sources:
services: dhcpv6-client mdns
ports:
protocols:
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
-bash.4[~]:
[... snip ...]
You most likely don't need mdns (Multicast DNS) and can delete that
service. You *may* need dhcpv6-client
to properly configure your IPv6 automatically when the system starts.
How do I delete a service (mdns)?
To address your other post containing all the Screen shots....
[... snip ...]
If you want to know more about the "services" shown in the screen shots
one way to do it is lookup the
service in /etc/services.
[egreshko@meimei ~]$ grep tivoconnect /etc/services
tivoconnect 2190/tcp # TiVoConnect Beacon
tivoconnect 2190/udp # TiVoConnect Beacon
And then google the description, in this case "TiVoConnect Beacon".
Learn, for example,
http://tivopod.sourceforge.net/tivoconnect.pdf and see that it is a
broadcast protocol used
by TiVo devices.
I got the same results.
If I understood you and that pdf file correctly, tivoconnect has nothing
to do with watching youtube videos or online streaming (such as Viki,
Rakuten, or Zoom). I think I don't use this either. But tivoconnect
sure shows up a lot in both columns. Is there something I should remove
from the system (via dnf), or shut off?
Someone in this thread suggested that outgoing traffic should be
examined as well as incoming. That does make sense to me. The
firewall-cmd commands I did: did those look at both incoming and
outgoing, or just incoming?
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