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set upper limit for Ports to 65535#136
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gnovaro approved these changesMar 23, 2025
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Looks good to me!
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cbergmann commentedJun 23, 2025
hi, Is there a reasonable chance that this might be merged? |
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Hi,
I use a shared hosting service where I can get ports of the host opened to my account. "The port numbers are generated automatically in the range from 40.000 to 61.000 and cannot be chosen arbitrarily." [1].
Unfortunately most zabbix ports (LISTEN_PORT, CONFIG_SERVER_PORT, CONFIG_JAVA_GATEWAY_PORT, CONFIG_LISTEN_PORT) are limited to the range 1024 to 32767.
The lower limit is totally understandable as these are well-known/system ports. The upper limit on the other hand seems arbirary. I would have understood a limit of 49151 which is the border to the dynamic ports but a limit of 65535 would be more flexible in my opinion.
As a workaround I have prepared a patch that changes the range but that requires me to recompile zabbix for each new version.
When Asking in the Forums [1] they suggested to raise a support issue. I think a pull request is even better so here it is.
[1]https://www.zabbix.com/forum/zabbix-suggestions-and-feedback/491398-why-are-port-numbers-limited-from-1024-to-32767
Thanks
Clemens