Hi,
Gufw can't affect that behavior. I think is an ufw issue.
Best regards.
** Also affects: ufw (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gui-ufw
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1934931
Title:
(X)ubuntu 20.04: GUFW and MS-Teams slow down traffic intermittently
Status in Gufw:
Invalid
Status in ufw package in Ubuntu:
New
Bug description:
Thanks for Gufw!
inxi -S output: Xubuntu standard LTS installation - Kernel:
5.4.0-77-generic x86_64 bits: 64 Desktop: Xfce 4.14.2 Distro: Ubuntu
20.04.2 LTS (Focal Fossa). GUFW 20.04.1, MS Teams 1.4.00.13653
(64-Bit) (all up to date at the time of this report).
** Problem: 250 Mbit LAN connection slowing down *intermittently*, but
reproducible, to a crawl of 300 kbit or less if Gufw is activated parallel to
MS teams.
* Gufw is used with only basic settings provided after installation
(in:denied/out:allowed and nothing else set, no further rules).
* There has not to be any active call in teams, just running it seems to
cause the problem after a while (<5 minutes).
* After congestion for some time (minutes), the system may recover to full
speed again, only to succumb again after a few minutes.
* Other parallel running programs' connections are slowed down as well in
accordance, e.g. parallel samba file sharing download is affected as well.
* Stopping teams restores the connection speed after a short while (~1
minute).
* Parallel connections to the LAN(router) are not inhibited, it is just the
one computer.
Teams seems to switch ports after restarting (UDP6/~34nnn-4nnnn). I
set up a range to be allowed within ports used by teams (e.g.
30000:55555, allow in/outbound) to no avail, connections dropped still
to low speed.
Thanks and regards,
Christoph
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