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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the following as you can (you can cut and paste this into your topic):
Nextcloud version (eg, 10.0.2):12.0.1 ((My nextcloud instance is running on a VM downloaded from techandme.se ))
Operating system and version (eg, Ubuntu 16.04): Linux nextcloud 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.18 (Ubuntu)
PHP version (eg, 5.6): PHP 7.0.22-0ubuntu0.16.04.1 (cli) ( NTS )
Copyright © 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright © 1998-2017 Zend Technologies
with Zend OPcache v7.0.22-0ubuntu0.16.04.1, Copyright © 1999-2017, by Zend Technologies
Is this the first time you’ve seen this error?: YES
Can you reliably replicate it? (If so, please outline steps): NO
The issue you are facing:
I have a nextcloud server running on a public IP
on the same public IP I have other servers running.
This problem is occurring on one client public IP so far.
Should the client tries to access nextcloud he gets no reply. the browser times out
Should the client tries to access other servers that are running on the same nextcloud public ip all goes well.
nextcloud is running on port xx1
crm is running on port xx2
Odoo is running on port xx3
I tried to reboot nextcloud server. No improvement
I cleared database oc_bruteforce_attempts . no improvements
Same client’s computer , I opened a VPN to another site , nextcloud can be accessed normally.
The output of your Apache/nginx/system log in
/var/log/____: apache2 log was cleared then tried to access via client ip
the file stayed 0 bytes.
Nextcloud can be accessed from all other known to me public IPs without any issue.
I suspect that nextcloud did block my client ip address but cannot figure out where to find the solution.
I rule out my firewall , client IP is in whitelist also the same client IP can access all other services.