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Sorry to hear you’re facing problems. 
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Getting help
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Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
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Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. 
The Basics
-
Nextcloud Server version (e.g., 29.x.x):
updated yesterday to spring 2026-2
-
Operating system and version (e.g., Ubuntu 24.04):
RASBIAN latest- Web server and version (e.g, Apache 2.4.25):
NGINX
Reverse proxy and version _(e.g. nginx 1.27.2)
latest
PHP version (e.g, 8.3):
8.5
-
Is this the first time you’ve seen this error? (Yes / No):
replace me
-
When did this problem seem to first start?
After I disabled http/1.1 in iptables
-
Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
today
-
Are you using CloudfIare, mod_security, or similar? (Yes / No)
IPTABLES
Summary of the issue you are facing:
I have A LOT of http/1.1 traffic trying to hack or crawl my websites.
I disabled port 80 and only allowed https. Enabled within NGINX http2 and http3. But still my logs where flooded with http/1.1 requests. After disabling http/1.1 through iptables, nextcloud server is not responding and time out’s! When removing iptables rule, all is fine, except I again get so much http/1.1 garbage.
Steps to replicate it (hint: details matter!):
-
added;
sudo iptables -A INPUT -p udp --dport 443 -j DROP # BLock ALL http:/1.1 access on port 443
Log entries
None, fails to connect by iptables blockking all http/1.1 443 traffic
Nextcloud
Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.
PASTE HERE
Web Browser
If the problem is related to the Web interface, open your browser inspector Console and Network tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.
Any
Web server / Reverse Proxy
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
{
"system": {
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"nextcloud.nl1106.eu"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "34.0.2.1",
"overwrite.cli.url": "https:\/\/nextcloud.nl1106.eu",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"debug": false,
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"log_type_audit": "syslog",
"syslog_tag_audit": "Nextcloud",
"logfile_audit": "",
"config_preset": 7,
"mail_smtpmode": "sendmail",
"mail_sendmailmode": "smtp",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "993",
"maintenance": false,
"mail_smtpsecure": "ssl",
"mail_smtpauth": true,
"updater.release.channel": "stable",
"app_install_overwrite": {
"1": "groupfolders",
"2": "mail_roundcube",
"3": "backup"
},
"theme": "",
"loglevel": 0,
"maintenance_window_start": 0,
"updater.secret": "***REMOVED SENSITIVE VALUE***",
"default_phone_region": "031",
"memcache.local": "\\OC\\Memcache\\APCu",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"serverid": "1"
},
"apps": {
"activity": {
"enabled": "yes",
"installed_version": "7.0.0",
"types": "filesystem"
},
"app_api": {
"enabled": "no",
"installed_version": "34.0.0",
"types": ""
},
"appointments": {
"enabled": "no",
"hk": "5f2feb468e4c95235b4efd171edd48a11a7ee6ce5f62d1de9228ef6f214b509c",
"installed_version": "2.7.4",
"tiv": "ebdf8d8001428f83db9de27cbffdbdc0",
"types": "dav"
},
"appstore": {
"enabled": "yes",
"installed_version": "1.0.0",
"types": ""
},
"backgroundjob": {
"lastjob": "90312896426418177"
},
"backup": {
"allow_weekday": "0",
"cron_enabled": "1",
"delay_full_rp": "24",
"delay_partial_rp": "3",
"enabled": "yes",
"installed_version": "1.4.0",
"mockup_date": "1784418177",
"pack_backup": "1",
"pack_compress": "1",
"pack_encrypt": "1",
"store_items": "3",
"store_items_external": "5",
"time_slots": "23-5",
"types": ""
},
"bruteforcesettings": {
"enabled": "yes",
"installed_version": "7.0.0",
"types": ""
},
"calendar": {
"enabled": "[\"eCar Gaasperdam\",\"eCar Chauffeurs\",\"Klanten\",\"admin\",\"guest_app\"]",
"installed_version": "6.5.2",
"types": ""
},
"calendar_resource_management": {
"enabled": "yes",
"installed_version": "0.12.1",
"types": "prevent_group_restriction"
},
"circles": {
"enabled": "yes",
"installed_version": "34.0.0",
"loopback_tmp_scheme": "https",
"maintenance_run": "0",
"maintenance_update": "{\"3\":1780318657,\"2\":1780318657,\"1\":1780318657}",
"migration_22": "1",
"migration_run": "0",
"types": "filesystem,dav"
},
"cloud_federation_api": {
"enabled": "yes",
"installed_version": "1.18.0",
"types": "filesystem"
},
"cms_pico": {
"enabled": "no",
"installed_version": "1.0.21",
"types": "filesystem"
},
"comments": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "logging"
},
"contacts": {
"enabled": "yes",
"installed_version": "8.7.5",
"types": "dav"
},
"contactsinteraction": {
"enabled": "yes",
"installed_version": "1.15.0",
"types": "dav"
},
"core": {
"backgroundjobs_mode": "cron",
"emailTestSuccessful": "1",
"installedat": "1771429814.9842",
"lastcron": 1784142226,
"lastupdateResult": "[]",
"lastupdatedat": 1785265165,
"mail_providers_enabled": false,
"metadataGenerationDone": true,
"moveavatarsdone": "yes",
"newUser.sendEmail": false,
"previewMovedDone": true,
"previewsCleanedUp": "1",
"public_files": "files_sharing\/public.php",
"updater.secret.created": 1785264561,
"vendor": "nextcloud",
"files_metadata": {
"photos-original_date_time": {
"value": null,
"type": "int",
"etag": "",
"indexed": true,
"editPermission": 0
},
"photos-size": {
"value": null,
"type": "array",
"etag": "",
"indexed": false,
"editPermission": 0
},
"photos-exif": {
"value": null,
"type": "array",
"etag": "",
"indexed": false,
"editPermission": 0
},
"photos-ifd0": {
"value": null,
"type": "array",
"etag": "",
"indexed": false,
"editPermission": 0
},
"blurhash": {
"value": null,
"type": "string",
"etag": "24fc61679da8f9988d9c9999806cd177",
"indexed": false,
"editPermission": 0
},
"photos-gps": {
"value": null,
"type": "array",
"etag": "",
"indexed": false,
"editPermission": 0
}
},
"oc.integritycheck.checker": {
"spreed": {
"FILE_MISSING": {
"templates\/index.php": {
"expected": "e1ea54dbc813692dd1c623730da0112bca2d2505ddb26abc38853cdd472b99be28c8f48b89b3d5206e2d6b2411d297db7eb276d9cdb93fd044c2eccb0d240382",
"current": ""
}
}
},
"mail_roundcube": {
"FILE_MISSING": {
"templates\/settings\/admin.php": {
"expected": "05b865a206fa8b1a99658cc154e1087c0f6a20bd90581dcbdebfe58d2be1c6c54eda74763c2ea3305c6e6aa78f0ecca5665cdc34ba9e21f6ed1bfd4d3f4453d9",
"current": ""
}
}
},
"guests": {
"FILE_MISSING": {
"templates\/settings\/admin.php": {
"expected": "2723178bac042998eefa5c865f1684b5589c69e888942375aa4a6dd9a9f28b64291585b0f743ec984c1bd7b02cb6e20bdda827566c11cdac880e9d8768dd5d1a",
"current": ""
}
}
},
"whiteboard": {
"FILE_MISSING": {
"templates\/admin.php": {
"expected": "1c1927f7c844a16a6bb082e456e1f67b36297e009f24e2cc6a47a9759eda35536feb8da8a6ce86cf99e2f8b4cd2033789d61e3b9b8377730706120fe8de402b6",
"current": ""
}
}
}
}
},
"cospend": {
"enabled": "no",
"installed_version": "4.0.2",
"types": ""
},
"dashboard": {
"enabled": "yes",
"installed_version": "7.14.0",
"types": ""
},
"dav": {
"buildCalendarReminderIndex": "yes",
"buildCalendarSearchIndex": "yes",
"builtSocialSearchIndex": true,
"checked_for_classified_activity": true,
"chunks_migrated": "1",
"enabled": "yes",
"generateBirthdayCalendar": "yes",
"hasCustomDefaultContact": false,
"installed_version": "1.39.0",
"regeneratedBirthdayCalendarsForYearFix": "yes",
"types": "filesystem"
},
"deck": {
"enabled": "yes",
"installed_version": "1.18.3",
"types": "dav"
},
"federatedfilesharing": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": ""
},
"federation": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "authentication"
},
"files": {
"enabled": "yes",
"installed_version": "2.6.0",
"mimetype_version": "33.0.3.2",
"types": "filesystem"
},
"files_downloadlimit": {
"enabled": "yes",
"installed_version": "5.2.0",
"types": ""
},
"files_lock": {
"enabled": "yes",
"installed_version": "34.0.1",
"types": "filesystem,dav"
},
"files_pdfviewer": {
"enabled": "yes",
"installed_version": "7.0.0-dev.0",
"types": ""
},
"files_reminders": {
"enabled": "yes",
"installed_version": "1.7.0",
"types": ""
},
"files_retention": {
"enabled": "[\"admin\"]",
"installed_version": "5.0.0",
"types": ""
},
"files_sharing": {
"enabled": "yes",
"installed_version": "1.26.0",
"types": "filesystem"
},
"files_trashbin": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "filesystem,dav"
},
"files_versions": {
"enabled": "yes",
"installed_version": "1.27.0",
"types": "filesystem,dav"
},
"firstrunwizard": {
"enabled": "yes",
"installed_version": "7.0.0-dev.0",
"types": ""
},
"groupfolders": {
"checked_for_incorrect_storage_for_trash_items": true,
"enabled": "yes",
"installed_version": "22.0.5",
"types": "filesystem,dav"
},
"guests": {
"enabled": "yes",
"installed_version": "4.8.0",
"types": "authentication"
},
"logreader": {
"enabled": "yes",
"installed_version": "7.0.0",
"types": "logging"
},
"lookup_server_connector": {
"enabled": "yes",
"installed_version": "1.22.0",
"types": "authentication"
},
"mail": {
"enabled": "yes",
"installed_version": "5.10.10",
"types": ""
},
"mail_roundcube": {
"emailAddressChoice": "userIdEmail",
"enabled": "no",
"installed_version": "1.2.2",
"types": ""
},
"nextcloud_announcements": {
"enabled": "yes",
"installed_version": "6.0.0",
"pub_date": "Thu, 24 Oct 2019 00:00:00 +0200",
"types": "logging"
},
"notes": {
"enabled": "yes",
"installed_version": "6.0.1",
"types": ""
},
"notifications": {
"enabled": "yes",
"installed_version": "7.0.0-dev.1",
"setting_batchtime": "0",
"sound_notification": "yes",
"sound_talk": "no",
"types": "logging",
"webpush_vapid_privkey": "***REMOVED SENSITIVE VALUE***",
"webpush_vapid_pubkey": "BOefdMnQlDN4VBLC_iWI-QE1OfFDSJABRtr49x8DWcJu4AXX6T1wcxKOY2OUfGLgJuolryc8JaMADhY_CTNgilI"
},
"oauth2": {
"enabled": "yes",
"installed_version": "1.22.0",
"types": "authentication"
},
"office": {
"enabled": "yes",
"installed_version": "1.0.0",
"types": ""
},
"password_policy": {
"enabled": "yes",
"installed_version": "6.0.0-dev.0",
"minLength": "7",
"types": "authentication"
},
"photos": {
"enabled": "yes",
"installed_version": "7.0.0",
"lastPlaceMappedUser": "nubro01",
"lastPlaceMappingDone": "true",
"types": "authentication,dav"
},
"privacy": {
"enabled": "yes",
"installed_version": "6.0.0-dev.1",
"readableLocation": "nl",
"types": ""
},
"profile": {
"enabled": "yes",
"installed_version": "1.3.0",
"types": ""
},
"provisioning_api": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "prevent_group_restriction"
},
"recommendations": {
"enabled": "yes",
"installed_version": "7.0.0",
"types": ""
},
"related_resources": {
"enabled": "yes",
"installed_version": "5.0.0-dev.0",
"types": ""
},
"richdocuments": {
"disable_certificate_verification": "yes",
"enabled": "yes",
"installed_version": "11.1.0",
"types": "filesystem,prevent_group_restriction",
"wopi_url": ""
},
"serverinfo": {
"cached_count_appdata_files": 1385,
"cached_count_filecache": 1752,
"cached_count_storages": 6,
"enabled": "yes",
"installed_version": "6.0.0",
"size_appdata_storage": 5166833,
"types": ""
},
"settings": {
"enabled": "yes",
"installed_version": "1.17.0",
"types": ""
},
"sharebymail": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "filesystem"
},
"spreed": {
"default_group_notification": 2,
"enabled": "no",
"installed_version": "24.0.1",
"project_access_invalidated": "1",
"signaling_token_privkey_es256": "***REMOVED SENSITIVE VALUE***",
"signaling_token_pubkey_es256": "***REMOVED SENSITIVE VALUE***",
"types": "dav,prevent_group_restriction"
},
"support": {
"SwitchUpdaterServerHasRun": "yes",
"enabled": "yes",
"installed_version": "6.0.0",
"types": "session"
},
"survey_client": {
"enabled": "yes",
"installed_version": "6.0.0-dev.0",
"never_again": true,
"types": ""
},
"systemtags": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "logging"
},
"text": {
"enabled": "yes",
"installed_version": "8.0.0",
"types": "dav"
},
"theming": {
"cachebuster": 6,
"enabled": "yes",
"installed_version": "2.9.0",
"logoDimensions": "266x260",
"logoMime": "image\/png",
"logoheaderMime": "image\/png",
"name": "eCar Gaasperdam",
"slogan": "***REMOVED SENSITIVE VALUE***",
"types": "logging",
"url": "***REMOVED SENSITIVE VALUE***"
},
"twofactor_backupcodes": {
"enabled": "yes",
"installed_version": "1.23.0",
"types": ""
},
"twofactor_totp": {
"enabled": "yes",
"installed_version": "16.0.0",
"types": ""
},
"twofactor_webauthn": {
"enabled": "yes",
"installed_version": "2.7.0",
"types": ""
},
"updatenotification": {
"enabled": "yes",
"installed_version": "1.24.0",
"types": "",
"update_check_errors": 0
},
"user_status": {
"enabled": "yes",
"installed_version": "1.14.0",
"types": ""
},
"viewer": {
"enabled": "yes",
"installed_version": "7.0.0-dev.0",
"types": ""
},
"weather_status": {
"enabled": "no",
"installed_version": "1.14.0",
"types": ""
},
"webhook_listeners": {
"enabled": "yes",
"installed_version": "1.6.0",
"types": "filesystem"
},
"whiteboard": {
"enabled": "no",
"installed_version": "1.5.9",
"types": ""
},
"workflowengine": {
"enabled": "yes",
"installed_version": "2.16.0",
"types": "filesystem"
}
}
}
Apps
The output of occ app:list (if possible).
Tips for increasing the likelihood of a response
- Use the
preformatted textformatting option in the editor for all log entries and configuration output. - If screenshots are useful, feel free to include them.
- If possible, also include key error output in text form so it can be searched for.
- Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.
