nextcloud
[Bug]: iOS client app not working inside a firewall internal network, works via external network only
⚠️ This issue respects the following points: ⚠️
- [X] This is a bug, not a question or a configuration/webserver/proxy issue.
- [X] This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
- [X] Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
- [X] I agree to follow Nextcloud's Code of Conduct.
Bug description
iOS app fully works via external / outside firewall connection. Safaris connects correctly using external ip and cloud website works as expected.
iOS app times out from connecting when connected inside a firewall. Safari connects correctly using internal ip and cloud website works as expected.
Canonical name cloud.spotter.net resolves to public ip address outside firewall Canonical name cloud.spotter.net resolves to private ip address inside firewall
My suspicion is that the app is caching an external dns resolution or hardcoding the ip in some fashion.
Steps to reproduce
- Deploy a private nextcloud server on a private ip firewalled network and provide port forwarded access via an external router with a public ip.
- Set up domain dns with resolution to public ip address of external router. eg. cloud.spotter.net via spotter.net domain
- Provide dns overide on internal networks dns server to resolve same canonical to the private ip (that is forwarded to via the external router)
- Connect iOS device to an external network outside firewalled network - connect to server (should work as expected)
- Connect iOS device to the internal firwalled network - app fails to connect - times out and produces erroneous messages like "no files here" when browsing filesystem.
Expected behavior
Expected behaviour is to have the iOS app correctly when connected to an external network and accessing the server via public IP AND when the iOS app is connected to the internal firewalled network and using a internal private ip that it connects to the server using the server's internal network IP resolved via a canonical address being resolved by the internal networks DNS services. IE externally the canonical name resolves to a public ip, internally the canonical name resolves to a private ip.
e.g. App should work as web browsers do - Safari works as expected accessing the cloud server using the canonical name whether the ios device is connected via an external network or connected to internal network.
Installation method
None
Nextcloud Server version
26
Operating system
None
PHP engine version
None
Web server
None
Database engine version
None
Is this bug present after an update or on a fresh install?
None
Are you using the Nextcloud Server Encryption module?
None
What user-backends are you using?
- [ ] Default user-backend (database)
- [ ] LDAP/ Active Directory
- [ ] SSO - SAML
- [ ] Other
Configuration report
No response
List of activated Apps
No response
Nextcloud Signing status
No response
Nextcloud Logs
No response
Additional info
No response
Hi, I don't understand what the application doesn't do or what it should do that it doesn't already do. DNS should resolve the IPs, we all use the same name inside the net and outside...so I don't see what it's supposed to do. The apps use the normal IP stack they don't do anything else. any anomaly must be verified by the network policies and not by the app
What is your setup like for the network itself? I had issues like this before, but it was based around how I was setting up HAProxy.
Are you using DNS? Have you tried uninstalling the app, reinstalling, then connecting the app to the server from internal ONLY?
