SUMMARY The new SSH Manager plugin does not accept port numbers above 9999. This is a bit of a problem for my own use case, where I have access to systems with ssh servers listening on port numbers well above 10000. STEPS TO REPRODUCE 1. Use Plugins -> Show SSH Manager 2. Click on Add to add a new SSH configuration 3. Attempt to enter 12345 into the Port field OBSERVED RESULT The maximum port number that may be entered is 9999. EXPECTED RESULT The maximum port number that may be entered should be a larger number above 9999 and below 65536 (see Additional Information below). SOFTWARE/OS VERSIONS Linux: Debian sid, Linux kernel 5.13.10 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION While the idea of validating port numbers is nice, the issue with getting too specific with it is that the range for non-ephemeral ports can vary by platform and individual system configuration. For Linux in particular, the default range for ephemeral ports (configurable via procfs /proc/sys/net/ipv4/ip_local_port_range) is 32768-60999, allowing ports 1 through 32767 to be used for anything else. Meanwhile, IANA recommends people to use 49152-65535 for ephemeral ports. The validation check can be changed to accept port numbers with 5 digits instead of 4 since port numbers are currently 16-bit unsigned integers. If the devs prefer, the port number can be checked to be less than or equal than 65535, but again getting more specific than that is bound to cause incompatibilities with edge cases.
A possibly relevant merge request was started @ https://invent.kde.org/utilities/konsole/-/merge_requests/472
I did some research and it looks like the maximum port number is 49151 (see the merge request linked above for more details).
That is the IANA recommendation indeed, although as I mentioned before Linux does allow customizing the port range for ephemeral ports via procfs, thus adding or taking away from the regular port range.
Git commit ee7f71142fedd6eda49b4246e65f434e4b3c5bd5 by Ahmad Samir. Committed on 02/09/2021 at 10:57. Pushed by hindenburg into branch 'master'. Fix the maximum port number in the SSH Manager plugin It should be in the System Ports 0-1023 or User Ports 1024-49151 ranges. See: https://en.wikipedia.org/wiki/Registered_port https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml FIXED-IN: 21.12 M +3 -1 src/plugins/SSHManager/sshmanagerpluginwidget.cpp https://invent.kde.org/utilities/konsole/commit/ee7f71142fedd6eda49b4246e65f434e4b3c5bd5
Git commit 41207a9633c4fcb23df2b6275037d7a810ebfb0a by Kurt Hindenburg, on behalf of Ahmad Samir. Committed on 02/09/2021 at 15:27. Pushed by hindenburg into branch 'release/21.08'. Fix the maximum port number in the SSH Manager plugin It should be in the System Ports 0-1023 or User Ports 1024-49151 ranges. See: https://en.wikipedia.org/wiki/Registered_port https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml FIXED-IN: 21.08.2 (cherry picked from commit ee7f71142fedd6eda49b4246e65f434e4b3c5bd5) M +3 -1 src/plugins/SSHManager/sshmanagerpluginwidget.cpp https://invent.kde.org/utilities/konsole/commit/41207a9633c4fcb23df2b6275037d7a810ebfb0a