[Cyberduck-trac] [Cyberduck] #11663: Transferring a file through SFTP in the LAN w/Cyberduck makes my *Internet* slow
Cyberduck
trac at cyberduck.io
Sat May 8 18:11:54 UTC 2021
#11663: Transferring a file through SFTP in the LAN w/Cyberduck makes my *Internet*
slow
-----------------------------+----------------------
Reporter: ItalyPaleAle | Owner:
Type: defect | Status: new
Priority: normal | Milestone:
Component: core | Version: 7.8.5
Severity: normal | Keywords:
Architecture: | Platform: macOS 11
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This is a really weird issue and I haven't been able to explain it.
Scenario:
- I have a small server inside my LAN.
- My network is fairly simple: everything is connected via switches, and I
have some UniFi access points for WiFi. The firewall is a pfSense box.
- I connect to that through Cyberduck to transfer (download/upload) files
using SFTP
- While I am transferring files using Cyberduck to that server,
inexplicably traffic to the public Internet from any other device in the
home is incredibly slow (to the point when web pages time out before
they're loaded)
- However, if I try to connect to another host within the LAN, the
connection is really fast. So, I can access other resources on the same
server, or I can connect to other hosts in the LAN (say, my firewall), and
there's no issue whatsoever. Only connections to the public internet are
blocked.
If instead of using Cyberduck I transfer files using `scp` on the command
line, there's no issue whatsoever on the network, and everything works
fine.
I am not sure how to explain it, but it sounds like Cyberduck may be doing
something that interferes with my network?
I'm using Cyberduck 7.8.5 on macOS 11.2.3. I'm on a M1 MacBook pro.
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Ticket URL: <https://trac.cyberduck.io/ticket/11663>
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